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  4. Professor Andrew Alderson
Andrew Alderson

Professor Andrew Alderson CSci, CPhys, MInstP, PhD

Director of the Materials and Engineering Research Institute and Faculty Head of Business Development (Acting)

Summary

Professor Alderson is Director of the Materials and Engineering Research Institute and Faculty Head of Business Development (Acting), and Professor of Smart Materials and Structures and undertakes highly collaborative interdisciplinary advanced materials research at the academia/industry interface. He is a recognised world authority on auxetic (negative Poisson’s ratio) materials, and has interests into related counterintuitive phenomena such as negative stiffness and negative thermal expansion. His research employs a combination of modelling and experimental methodologies to study the design-processing-structure-properties relationships in polymers, composites, textiles, cellular solids, inorganics and mechanical metamaterials from the nanoscale to the macroscale.

  • About

    Since gaining his BSc and PhD in Physics at the University of Liverpool, Professor Alderson has worked for almost 30 years in the advanced materials field, with particular emphasis on auxetic (negative Poisson’s ratio) materials. Prior to joining the Materials and Engineering Research Institute in 2013, he was Director of the Institute for Materials Research and Innovation, Head of Sciences and Professor of Materials Physics at the University of Bolton. He has also worked in the Nuclear industry (BNFL) and held Directorships with I-zone Incubation Ltd and Auxetic Technologies Ltd.

    He is a Member of the Institute of Physics (MInstP), Chartered Physicist (CPhys) and Chartered Scientist (CSci). He has served on 12 EPSRC panels (including panel chair), as a guest editor of several special/focus issues of Physica Status Solidi B and Smart Materials and Structures, and is a member of the Editorial Boards of Computational Methods in Science and Technology and Applied Sciences.

    Over 150 papers have been published from his research collaborations into auxetic and related materials/structures, nuclear structure physics, conductive polymers and flame-retardant materials.

    Technology transfer is a key focus and, in addition to his company Directorships, he is a co-inventor on 15 patent applications and has undertaken consultancies with many companies in the healthcare, sports and chemical sectors. His 15 patent applications relate to inventions for products in filtration, radiation sensing, manufacturing, apparel, advanced composites and biomedical applications. He has played leading roles with industry-facing consortia (e.g. Innovate UK REACTICS and EU FP CHISMACOMB), networks (EPSRC Auxetic Materials Network) and regional collaborative research centres (North West Composites Centre), and has been involved in collaborative research programmes worth in excess of £11M.

    He is a keen communicator of science, regularly delivering seminars and workshops to the public, companies, trade events, and science and technology conferences. His award-winning research has featured in the Science Museum (London) and on BBC TV and Radio.

    Awards for his research include:
    • Kenneth Harris James prize of the Aerospace Industries Divisional Board of the Institution of Mechanical Engineers (2008)
    • EPSRC Life Sciences Interface Programme regional meeting prize (2003)
    • De Montfort prize, SET Young Engineers and Scientists, House of Commons (2001)

    Specialist areas of interest

    - Auxetic materials;
    - Mechanical metamaterials;
    - Mechanical properties;
    - Polymers;
    - Composites;

  • Teaching

    Department of Engineering and Mathematics, Materials and Engineering Research Institute

    Science, Technology and Arts

    Final year undergraduate and Masters project supervision:

    MSc Advanced Materials Engineering, MSc Sports Engineering, MEng Mechanical Engineering,
    BSc(Hons) Sport Technology, BSc (Hons) Aerospace Technology, BSc Mechanical Engineering, BSc Aeronautical Engineering,
    BEng Mechanical Engineering
    BEng Materials Engineering

  • Research

    • Polymers, Nanocomposites and Modelling Research Centre
    • Materials and Engineering Research Institute

    Professor Alderson's main research focus is on advanced and smart materials having unusual mechanical and thermal properties. A major activity is research into auxetic (negative Poisson's ratio) materials, which is now naturally extending into other negative phenomena (thermal expansion and stiffness).

    Other research areas Andy has undertaken relate to nuclear structure physics, conductive polymers, flame-retardant materials and technical textiles. His research employs a combination of modelling and experimental methodologies to study the design-processing-structure-properties relationships in polymers, composites and inorganics from the nanoscale to the macroscale.

    Andy is especially interested in developing materials having extremal/optimal properties for applications in the transport, healthcare technologies, advanced manufacturing and low carbon sectors.

    Current and Recent Research Projects

    October 2018-ongoing: Finite Element (FE) modelling of impact response of auxetic materials. Funded by SHU Faculty of STA GTA studentship. PhD student: Klaudia Cwiertka.

    This project is a collaboration between MERI and the Department of Engineering and Maths. Finite element modelling is being employed to model naturally-occurring auxetic materials for the development of new biomimetic composites with enhanced impact protection capability. The relationships between structure and mechanical properties are being explored, along with a consideration of rate-dependency in the impact response of the composites.

    October 2017—ongoing: Towards intrinsically-auxetic polymers. Funded by SHU VC PhD scholarship and an external company. PhD student: Shruti Mandhani.

    The programme aims to develop a truly inherent (molecular-level) synthetic auxetic (negative Poisson's ratio) polymer for real-world application. Working with the Materials and Fluid Flow Modelling group, we are extending our previous work on scaling down known macrostructures for theoretical cross-linked polymers, and understanding natural auxetic inorganic and organic crystalline nanostructures, to a fully 3D system having connectivity similar to that achievable in elastomer materials. Analytical and computational (Finite Element and molecular) modelling techniques are being employed at mono-domain and poly-domain levels to identify key structural features and deformation mechanisms giving rise to auxetic behaviour.

    October 2015—ongoing: Auxetic scaffolds for tissue engineering. Funded by Sheffield Children’s Hospitals (SCH), SHU VC PhD scholarship and an external company. Placement student: Jordan Roe; Research Assistant/PhD student (from Jan 2018): Paul Mardling.

    This project is collaboration between the Biomolecular Sciences Research Centre (BMRC) and MERI, initially funded by SCH, with further funding via a SHU VC PhD scholarship matched by an external biomedical devices company. The overarching aim of the project is to develop a range of ‘auxetic’ porous scaffolds for eventual tissue engineering applications, which mimic the mechanical properties of soft tissues, promote migration, adhesion and differentiation of cells, and enable delivery of bioactive components. The produced scaffolds are being characterised for their structure and mechanical properties, prior to investigation in vitro. Tissue cells are being cultured on the scaffolds and the behaviour of the cells on the scaffolds determined using a variety of biochemical, histological, immunohistological, molecular biology, scanning electron microscopy and biomechanical analysis methods.

    January 2014—ongoing: Application of auxetic materials to sports equipment design. Funded by Sheffield Hallam University (IMAGINE connectivity; Faculty of STA GTA studentship; Creating Knowledge Platform Challenge Fund) and external companies. PhD student: Olly Duncan.

    This project is focussed on developing new and improved sporting impact protection materials and is part of a wider collaboration with the Centre for Sports Engineering Research and also Manchester Metropolitan University. A process to produce large area or volume isotropic, anisotropic and gradient one-piece auxetic foams is being developed, and foams produced and characterised for their mechanical and impact response properties. Significant reductions in peak acceleration are being found for the auxetic foams relative to their conventional counterparts.

    April 2013—ongoing: Mechanical metamaterials. Funded by US ARO, SHU (Hallam Fund and Creating Knowledge Platform Challenge Fund) and ERASMUS. PhD student/Research Assistant: Trishan Hewage; Intern student: Margaux Sage.

    This project is being undertaken in collaboration with the University of Bristol and Institut Polytechnique de Bordeaux for ENSEIRB-MATMECA to develop a new concept of a 'mechanical metamaterial' combining two
    unusual properties: negative Poisson's ratio (NPR - the material becomes fatter when pulled) and negative stiffness (NS - the material becomes shorter when pulled). This has been achieved by embedding NS elements (foam, buckled beam or magnetic assembly) within a 2D NPR array of interlocking regular hexagon subunits. The large scale isotropic 2D assembly is now being extended into a 3D mechanical metamaterial using analytical and Finite Element modelling methodologies in the design stage, and 3D printing and mechanical testing combined with optical strain measurement in the production and characterisation stage.

    July 2012—2018: A novel space creation and organ retraction system for laparoscopic surgery.
    Funded by EPSRC, HEIF and Central Manchester University Hospitals NHS Foundation Trust (CMFT). PhD student: Dignesh Shah.

    This project involved working with a team of surgeons and an NHS business development manager to devise novel mechanical expansion mechanisms for an innovative new device – the LaparOsphereTM - for space creation and organ retraction in laparoscopic surgery. Surface pressures and retraction distances applied to organs during abdominal surgery have been measured. Based on these measurements, CAD, Finite Element Modelling, laser cutting and 3D printing were being used to design and produce viable expansion mechanisms for the device.

    Academic collaborators

    My academic collaborators include/have included: Universities of Cambridge (Cavendish Laboratory and Melville Laboratory for Polymer Synthesis), Wales (Bangor), Exeter, Sheffield, Bristol, Hull, Manchester, Liverpool, Lancaster, Leeds, Salford, Liverpool John Moores, Imperial College, Manchester Metropolitan, Malta (Malta), Technical University IASI (Romania), Fraunhofer-IPA (Stuttgart, Germany), Technion (Israel), Texas at Austin (USA), University of Victoria (Canada), Institute of Molecular Physics (Polish Academy of Sciences) and Harbin Institute of Technology (China).

    Industrial/business partners

    My industrial/business partners include/have included: BNFL, Acordis, Rhodia, Noveon Inc, Web Processing, Interface Fabrics, PW Greenhalgh, Du Pont, QinetiQ, Cytec Engineered Materials, IMMG S.A. (Greece), Italcompany Group (Italy), QWED (Poland), ICI/AkzoNobel, Rolls Royce, Hurel Hispano, SEOS Ltd, Dow Corning, Auxetix Ltd, Auxetic Technologies Ltd, Sara Lee Branded Apparel, Shakespeare Monofilament UK Ltd, TrusTECH/Central Manchester University Hospitals NHS Foundation Trust, BSN Medical Inc, Applied Biomedical Systems, Salford Royal NHS Foundation Trust, Sheffield Children’s Hospital, Pioneer Healthcare.

  • Publications

    Journal articles

    Duncan, O., Clegg, F., Essa, A., Bell, A., Foster, L., Allen, T., & Alderson, A. (2019). Effects of heat exposure and volumetric compression on Poisson's ratios, Young's moduli and polymeric composition during thermo-mechanical conversion of auxetic open cell polyurethane foam. physica status solidi (b), 256 (1). http://doi.org/10.1002/pssb.201800393

    Wojciechowski, K.W., Scarpa, F., Grima, J.N., & Alderson, A. (2019). Auxetics and other systems of anomalous characteristics. physica status solidi b, 256 (1), 1800736. http://doi.org/10.1002/pssb.201800736

    Duncan, O., Shepherd, T., Moroney, C., Foster, L., Venkatramam, P., Winwood, K., ... Alderson, A. (2018). Review of auxetic materials for sports applications: expanding options in comfort and protection. Applied Sciences, 8 (6), 941. http://doi.org/10.3390/app8060941

    Foster, L., Peketi, P., Allen, T., Senior, T., Duncan, O., & Alderson, A. (2018). Application of auxetic foam in sports helmets. Applied Sciences, 8 (3), 354. http://doi.org/10.3390/app8030354

    Duncan, O., Allen, T., Foster, L., Gatt, R., Grima, J.N., & Alderson, A. (2018). Controlling density and modulus in auxetic foam fabrications—-implications for impact and indentation testing. Proceedings, 2 (6), 250. http://doi.org/10.3390/proceedings2060250

    Shah, D., Alderson, A., Corden, J., Satyadas, T., & Augustine, T. (2018). In vivo measurement of surface pressures and retraction distances applied on abdominal organs during surgery. Surgical Innovation, 25 (1), 50-56. http://doi.org/10.1177/1553350617745952

    Allen, T., Hewage, T., Newton-Mann, C., Wang, W., Duncan, O., & Alderson, A. (2017). Fabrication of auxetic foam sheets for sports applications. physica status solidi (b), 254 (12), 1700596. http://doi.org/10.1002/pssb.201700596

    Wojciechowski, K.W., Scarpa, F., Grima, J.N., & Alderson, A. (2017). Auxetics and Other Systems of Anomalous Characteristics. Physica Status Solidi (B) Basic Research, 254 (12). http://doi.org/10.1002/pssb.201770266

    Duncan, O., Allen, T., Foster, L., Senior, T., & Alderson, A. (2017). Fabrication, characterisation and modelling of uniform and gradient auxetic foam sheets. Acta Materialia, 126, 426-437. http://doi.org/10.1016/j.actamat.2017.01.004

    Hewage, T.A.M., Alderson, K.L., Alderson, A., & Scarpa, F. (2016). Correction to: Double-Negative Mechanical Metamaterials Displaying Simultaneous Negative Stiffness and Negative Poisson's Ratio Properties (Advanced Materials, (2016), 10.1002/adma.201603959). Advanced Materials, 28 (46), 10116. http://doi.org/10.1002/adma.201605935

    Hewage, T., Alderson, K., Alderson, A., & Scarpa, F. (2016). Double-Negative Mechanical Metamaterials Displaying Simultaneous Negative Stiffness and Negative Poisson’s Ratio Properties. Advanced Materials, 28 (46), 10323-10332. http://doi.org/10.1002/adma.201603959

    Yao, Y.T., Alderson, K.L., & Alderson, A. (2016). Modeling of negative Poisson’s ratio (auxetic) crystalline cellulose Iβ. Cellulose, 23 (6), 3429-3448. http://doi.org/10.1007/s10570-016-1069-9

    Alderson, K., Nazaré, S., & Alderson, A. (2016). Large-scale extrusion of auxetic polypropylene fibre. Physica status solidi b, 253 (7), 1279-1287. http://doi.org/10.1002/pssb.201600079

    Wojciechowski, K.W., Scarpa, F., Grima, J.N., & Alderson, A. (2016). Auxetics and other systems of “negative” characteristics. physica status solidi b, 253 (7), 1241-1242. http://doi.org/10.1002/pssb.201670549

    Duncan, O., Foster, L., Senior, T., Alderson, A., & Allen, T. (2016). Quasi-static characterisation and impact testing of auxeticfoam for sports safety applications. Smart Materials and Structures, 25 (5). http://doi.org/10.1088/0964-1726/25/5/054014

    Scarpa, F., Alderson, A., Ruzzene, M., & Wojciechowski, K. (2016). Auxetics in smart systems and structures 2015. Smart Materials and Structures, 25 (5). http://doi.org/10.1088/0964-1726/25/5/050301

    Wojciechowski, K.W., Scarpa, F., Grima, J.N., & Alderson, A. (2015). Auxetics and other systems of “negative” characteristics. physica status solidi b, 252 (7), 1421-1425. http://doi.org/10.1002/pssb.201570348

    Allen, T., Shepherd, J., Hewage, T.M., Senior, T., Foster, L., & Alderson, A. (2015). Low-kinetic energy impact response of auxetic and conventional open-cell polyurethane foams. physica status solidi b, 252 (7), 1631-1639. http://doi.org/10.1002/pssb.201451715

    Nazaré, F., & Alderson, A. (2015). Models for the prediction of Poisson's ratio in the 'alpha-cristobalite' tetrahedral framework. physica status solidi b, 252 (7), 1465-1478. http://doi.org/10.1002/pssb.201451732

    Alderson, K.L., Alderson, A., Grima, J.N., & Wojciechowski, K.W. (2014). Auxetic materials and related systems. Physica status solidi B - basic solid state physics, 251 (2), 263-266. http://doi.org/10.1002/pssb.201470114

    Sanami, M., Alderson, A., Alderson, K.L., McDonald, S.A., Mottershead, B., & Withers, P.J. (2014). The production and characterization of topologically and mechanically gradient open-cell thermoplastic foams. Smart Materials and Structures, 23 (5). http://doi.org/10.1088/0964-1726/23/5/055016

    Pierron, F., McDonald, S.A., Hollis, D., Fu, J., Withers, P.J., & Alderson, A. (2013). Comparison of the mechanical behaviour of standard and auxetic foams by x-ray computed tomography and digital volume correlation. Strain, 49 (6), 467-482. http://doi.org/10.1111/str.12053

    Lim, T.C., Alderson, A., & Alderson, K.L. (2013). Experimental studies on the impact properties of auxetic materials. Physica status solidi (b), 251 (2), 307-313. http://doi.org/10.1002/pssb.201384249

    Scarpa, F., Ruzzene, M., Alderson, A., & Wojciechowski, K.W. (2013). Auxetics in smart systems and structures 2013. Smart Materials and Structures, 22 (8). http://doi.org/10.1088/0964-1726/22/8/080201

    Alderson, A., Alderson, K.L., McDonald, S.A., Mottershead, B., Nazare, S., Withers, P.J., & Yao, Y.T. (2013). Piezomorphic materials. Macromolecular Materials and Engineering, 298 (3), 318-327. http://doi.org/10.1002/mame.201200028

    Alderson, K., Alderson, A., Anand, S., Simkins, V., Nazare, S., & Ravirala, N. (2012). Auxetic warp knit textile structures. Physica Status Solidi (B) Basic Research, 249 (7), 1322-1329. http://doi.org/10.1002/pssb.201084216

    Alderson, K., Alderson, A., Ravirala, N., Simkins, V., & Davies, P. (2012). Manufacture and characterisation of thin flat and curved auxetic foam sheets. Physica Status Solidi (B) Basic Research, 249 (7), 1315-1321. http://doi.org/10.1002/pssb.201084215

    Alderson, A. (2011). Auxetic materials: Stretching the imagination. Chemistry and Industry (London), (2).

    Alderson, K.L., Alderson, A., & Wojciechowski, K.W. (2011). Auxetic Materials and Related Systems. Physica Status Solidi (B) Basic Research, 248 (1), 28-29. http://doi.org/10.1002/pssb.201083985

    Grima, J.N., Ravirala, N., Galea, R., Ellul, B., Attard, D., Gatt, R., ... Evans, K.E. (2011). Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour. Physica Status Solidi (B) Basic Research, 248 (1), 117-122. http://doi.org/10.1002/pssb.201083982

    McDonald, S.A., Dedreuil-Monet, G., Yao, Y.T., Alderson, A., & Withers, P.J. (2011). In situ 3D X-ray microtomography study comparing auxetic and non-auxetic polymeric foams under tension. Physica Status Solidi (B) Basic Research, 248 (1), 45-51. http://doi.org/10.1002/pssb.201083975

    Gaspar, N., Smith, C.W., Alderson, A., Grima, J.N., & Evans, K.E. (2011). A generalised three-dimensional tethered-nodule model for auxetic materials. Journal of Materials Science, 46 (2), 372-384. http://doi.org/10.1007/s10853-010-4846-0

    Alderson, A., Alderson, K.L., Chirima, G., Ravirala, N., & Zied, K.M. (2010). The in-plane linear elastic constants and out-of-plane bending of 3-coordinated ligament and cylinder-ligament honeycombs. Composites Science and Technology, 70 (7), 1034-1041. http://doi.org/10.1016/j.compscitech.2009.07.010

    Lorato, A., Innocenti, P., Scarpa, F., Alderson, A., Alderson, K.L., Zied, K.M., ... Evans, K.E. (2010). The transverse elastic properties of chiral honeycombs. Composites Science and Technology, 70 (7), 1057-1063. http://doi.org/10.1016/j.compscitech.2009.07.008

    Alderson, A., Alderson, K.L., Attard, D., Evans, K.E., Gatt, R., Grima, J.N., ... Zied, K. (2010). Elastic constants of 3-, 4- and 6-connected chiral and anti-chiral honeycombs subject to uniaxial in-plane loading. Composites Science and Technology, 70 (7), 1042-1048. http://doi.org/10.1016/j.compscitech.2009.07.009

    McDonald, S.A., Ravirala, N., Withers, P.J., & Alderson, A. (2009). In situ three-dimensional x-ray microtomography of an auxetic foam under tension. Scripta Materialia, 60 (4), 232-235. http://doi.org/10.1016/j.scriptamat.2008.10.013

    Alderson, A., & Evans, K.E. (2008). Deformation mechanisms leading to auxetic behaviour in the α-cristobalite and α-quartz structures of both silica and germania. Journal of Physics: Condensed Matter, 21 (2), 025401. http://doi.org/10.1088/0953-8984/21/2/025401

    Yao, Y.T., Alderson, A., & Alderson, K.L. (2008). Can nanotubes display auxetic behaviour? Physica Status Solidi (B) Basic Research, 245 (11), 2373-2382. http://doi.org/10.1002/pssb.200880266

    Chirima, G., Ravirala, N., Rawal, A., Simkins, V.R., Alderson, A., & Alderson, K.L. (2008). The effect of processing parameters on the fabrication of auxetic extruded polypropylene films. Physica Status Solidi (B) Basic Research, 245 (11), 2383-2390. http://doi.org/10.1002/pssb.200880251

    Horrocks, A.R., Davies, P.J., Kandola, B.K., & Alderson, A. (2007). The potential for volatile phosphorus-containing flame retardants in textile back-coatings. Journal of Fire Sciences, 25 (6), 523-540. http://doi.org/10.1177/0734904107083553

    Alderson, A., & Alderson, K.L. (2007). Auxetic materials. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 221 (4), 565-575. http://doi.org/10.1243/09544100JAERO185

    Alderson, K.L., Alderson, A., Davies, P.J., Smart, G., Ravirala, N., & Simkins, G. (2007). The effect of processing parameters on the mechanical properties of auxetic polymeric fibers. Journal of Materials Science, 42 (19), 7991-8000. http://doi.org/10.1007/s10853-006-1325-8

    Ravirala, N., Alderson, A., & Alderson, K.L. (2007). Interlocking hexagons model for auxetic behaviour. Journal of Materials Science, 42 (17), 7433-7445. http://doi.org/10.1007/s10853-007-1583-0

    Grima, J.N., Gatt, R., Zammit, V., Williams, J.J., Evans, K.E., Alderson, A., & Walton, R.I. (2007). Natrolite: A zeolite with negative Poisson's ratios. Journal of Applied Physics, 101 (8). http://doi.org/10.1063/1.2718879

    Wojciechowski, K.W., Alderson, A., Alderson, K.L., Maruszewski, B., & Scarpa, F. (2007). Physica Status Solidi (B) Basic Research: Preface. Physica Status Solidi (B) Basic Research, 244 (3), 813-815. http://doi.org/10.1002/pssb.200790002

    Alderson, A., Alderson, K., & Skertchly, D. (2006). Auxetic composites expand when they are stretched. JEC Composites Magazine, 43 (28), 65.

    Grima, J.N., Gatt, R., Alderson, A., & Evans, K.E. (2005). On the origin of auxetic behaviour in the silicate α-cristobalite. Journal of Materials Chemistry, 15 (37), 4003-4005. http://doi.org/10.1039/b508098c

    Grima, J.N., Gatt, R., Alderson, A., & Evans, K.E. (2005). On the auxetic properties of 'rotating rectangles' with different connectivity. Journal of the Physical Society of Japan, 74 (10), 2866-2867. http://doi.org/10.1143/JPSJ.74.2866

    Simkins, V.R., Alderson, A., Davies, P.J., & Alderson, K.L. (2005). Single fibre pullout tests on auxetic polymeric fibres. Journal of Materials Science, 40 (16), 4355-4364. http://doi.org/10.1007/s10853-005-2829-3

    Ravirala, N., Alderson, A., Alderson, K.L., & Davies, P.J. (2005). Auxetic polypropylene films. Polymer Engineering and Science, 45 (4), 517-528. http://doi.org/10.1002/pen.20307

    Grima, J.N., Alderson, A., & Evans, K.E. (2005). An alternative explanation for the negative poisson's ratios in auxetic foams. Journal of the Physical Society of Japan, 74 (4), 1341-1342. http://doi.org/10.1143/JPSJ.74.1341

    Alderson, K.L., Alderson, A., Smart, G., Simkins, V.R., & Davies, P.J. (2002). Auxetic polypropylene fibres Part 1 - Manufacture and characterisation. Plastics, Rubber and Composites, 31 (8), 344-349. http://doi.org/10.1179/146580102225006495

    Whitty, J.P.M., Nazare, F., & Alderson, A. (2002). Modelling the effects of density variations on the in-plane Poisson's ratios and Young's moduli of periodic conventional and re-entrant honeycombs - Part 1: Rib thickness variations. Cellular Polymers, 21 (2), 69-98.

    Alderson, A., & Evans, K.E. (2002). Molecular Origin of Auxetic Behavior in Tetrahedral Framework Silicates. Physical Review Letters, 89 (22). http://doi.org/10.1103/PhysRevLett.89.225503

    Davies, P.J., Horrocks, A.R., & Alderson, A. (2002). Possible phosphorus/halogen synergism in flame retardant textile backcoatings. Fire and Materials, 26 (4-5), 235-242. http://doi.org/10.1002/fam.801

    Alderson, A., & Evans, K.E. (2001). Rotation and dilation deformation mechanisms for auxetic behaviour in the α-cristobalite tetrahedral framework structure. Physics and Chemistry of Minerals, 28 (10), 711-718. http://doi.org/10.1007/s002690100209

    Rasburn, J., Mullarkey, P.G., Evans, K.E., Alderson, A., Ameer-Beg, S., & Perrie, W. (2001). Auxetic structures for variable permeability systems. AIChE Journal, 47 (11), 2623-2626. http://doi.org/10.1002/aic.690471125

    Alderson, A., Rasburn, J., Evans, K.E., & Grima, J.N. (2001). Auxetic polymeric filters display enhanced de-fouling and pressure- compensation properties. Membrane Technology, 2001 (137), 6-8. http://doi.org/10.1016/S0958-2118(01)80299-8

    Grima, J.N., Jackson, R., Alderson, A., & Evans, K.E. (2000). Do zeolites have negative Poisson's ratios? ADVANCED MATERIALS, 12 (24), 1912-+. http://doi.org/10.1002/1521-4095(200012)12:24<1912::AID-ADMA1912>3.0.CO;2-7

    Grima, J.N., Jackson, R., Alderson, A., & Evans, K.E. (2000). Do zeolites have negative Poisson's ratios? Advanced Materials, 12 (24), 1912-1918. http://doi.org/10.1002/1521-4095(200012)12:24<1912::AID-ADMA1912>3.0.CO;2-7

    Stott, P.J., Mitchell, R., Alderson, K., & Alderson, A. (2000). Growth industry. Materials World, 8 (10), 12-14.

    Evans, K.E., & Alderson, A. (2000). Auxetic materials: Functional materials and structures from lateral thinking! ADVANCED MATERIALS, 12 (9), 617-+. http://doi.org/10.1002/(SICI)1521-4095(200005)12:9<617::AID-ADMA617>3.0.CO;2-3

    Alderson, A., Rasburn, J., Ameer-Beg, S., Mullarkey, P.G., Perrie, W., & Evans, K.E. (2000). An auxetic filter: A tuneable filter displaying enhanced size selectivity or defouling properties. Industrial and Engineering Chemistry Research, 39 (3), 654-665. http://doi.org/10.1021/ie990572w

    Evans, K.E., & Alderson, A. (2000). Auxetic materials: Functional materials and structures from lateral thinking! Advanced Materials, 12 (9), 617-628. http://doi.org/10.1002/(SICI)1521-4095(200005)12:9<617::AID-ADMA617>3.0.CO;2-3

    Alderson, A. (1999). A triumph of lateral thought. Chemistry and Industry (London), (10).

    Alderson, K.L., Alderson, A., Webber, R.S., & Evans, K.E. (1998). Evidence for uniaxial drawing in the fibrillated microstructure of auxetic microporous polymers. Journal of Materials Science Letters, 17 (16), 1415-1419. http://doi.org/10.1023/A:1026409404057

    Alderson, K.L., Alderson, A., & Evans, K.E. (1997). The interpretation of the strain-dependent Poisson's ratio in auxetic polyethylene. Journal of Strain Analysis for Engineering Design, 32 (3), 201-212. http://doi.org/10.1243/0309324971513346

    Alderson, A., & Evans, K.E. (1997). Modelling concurrent deformation mechanisms in auxetic microporous polymers. Journal of Materials Science, 32 (11), 2797-2809. http://doi.org/10.1023/A:1018660130501

    Evans, K.E., Alderson, A., & Christian, F.R. (1995). Auxetic two-dimensional polymer networks. An example of tailoring geometry for specific mechanical properties. Journal of the Chemical Society, Faraday Transactions, 91 (16), 2671-2680. http://doi.org/10.1039/FT9959102671

    Alderson, A., & Evans, K.E. (1995). Microstructural modelling of auxetic microporous polymers. Journal of Materials Science, 30 (13), 3319-3332. http://doi.org/10.1007/BF00349875

    Simpson, J., Hanna, F., Riley, M.A., Alderson, A., Bentley, M.A., Bruce, A.M., ... Walker, L. (1992). High-spin gamma -ray spectroscopy of 165W and 166W. Journal of Physics G: Nuclear and Particle Physics, 18 (7), 1207-1225. http://doi.org/10.1088/0954-3899/18/7/010

    Smith, G., Haas, B., Alderson, A., Ali, I., Beausang, C.W., Bentley, M.A., ... Vivien, J.P. (1992). Entrance-channel effects in the population of superdeformed bands. Physical Review Letters, 68 (2), 158-161. http://doi.org/10.1103/PhysRevLett.68.158

    Bentley, M.A., Alderson, A., Ball, G.C., Cranmer-Gordon, H.W., Fallon, P., Fant, B., ... Twin, P.J. (1991). Gamma-ray spectroscopy of superdeformed states in the nucleus 152Dy. Journal of Physics G: Nuclear and Particle Physics, 17 (4), 481-510. http://doi.org/10.1088/0954-3899/17/4/009

    Simpson, J., Riley, M.A., Alderson, A., Bentley, M.A., Bruce, A.M., Cullen, D.M., ... Walker, L. (1991). Yrast band spectroscopy of 164W and the systematics of the first i13/2 neutron backbend in the neutron deficient rare-earth nuclei. Journal of Physics G: Nuclear and Particle Physics, 17 (4), 511-523. http://doi.org/10.1088/0954-3899/17/4/010

    Broude, C., Hass, M., Goldring, G., Alderson, A., Ali, I., Cullen, D.M., ... Sharpey-Schafer, J.F. (1991). The quadrupole moment of the K=25 isomer in 182Os. Physics Letters B, 264 (1-2), 17-20. http://doi.org/10.1016/0370-2693(91)90695-M

    Fallon, P., Alderson, A., Ali, I., Cullen, D.M., Forsyth, P.D., Riley, M.A., ... Bruce, A.M. (1991). The collectivity and the de-excitation of the yrast superdeformed band in 150Gd. Physics Letters B, 257 (3-4), 269-272. http://doi.org/10.1016/0370-2693(91)91891-X

    Cullen, D.M., Riley, M.A., Alderson, A., Ali, I., Beausang, C.W., Bengtsson, T., ... Wyss, R. (1991). Cullen et al. reply. Physical Review Letters, 67 (9), 1175. http://doi.org/10.1103/PhysRevLett.67.1175

    Riley, M.A., Roberts, J.W., Simpson, J., Alderson, A., Ali, I., Bentley, M.A., ... Sharpey-Schafer, J.F. (1990). The spectroscopy of 161,162ER at spins up to 50 in the unpaired regime. Journal of Physics G: Nuclear and Particle Physics, 16 (3). http://doi.org/10.1088/0954-3899/16/3/006

    Gascon, J., Yu, C.H., Hagemann, G.B., Carpenter, M.C., Espino, J.M., Iwata, Y., ... Sharpey-Schafer, J.F. (1990). Configuration-dependent transition rates in 157Ho. Nuclear Physics, Section A, 513 (2), 344-372. http://doi.org/10.1016/0375-9474(90)90102-R

    Riley, M.A., Cullen, D.M., Alderson, A., Ali, I., Fallon, P., Forsyth, P.D., ... Wyss, R. (1990). Multiple superdeformed bands in 194Hg and their dynamical moments of inertia. Nuclear Physics, Section A, 512 (1), 178-188. http://doi.org/10.1016/0375-9474(90)90010-J

    Cullen, D.M., Riley, M.A., Alderson, A., Ali, I., Beausang, C.W., Bengtsson, T., ... Wyss, R. (1990). Landau-Zener crossing in superdeformed Hg193: Evidence for octupole correlations in superdeformed nuclei. Physical Review Letters, 65 (13), 1547-1550. http://doi.org/10.1103/PhysRevLett.65.1547

    Byrski, T., Beck, F.A., Curien, D., Schuck, C., Fallon, P., Alderson, A., ... Twin, P.J. (1990). Observation of identical superdeformed bands in N=86 nuclei. Physical Review Letters, 64 (14), 1650-1653. http://doi.org/10.1103/PhysRevLett.64.1650

    Alderson, A., Bentley, M., Broude, C., Bruce, A., Dafni, E., Fallon, P., ... Twin, P. (1989). The g-factor of the K=25 isomer in 182Os. Physics Letters B, 228 (4), 463-465. http://doi.org/10.1016/0370-2693(89)90975-1

    Fallon, P., Alderson, A., Bentley, M.A., Bruce, A.M., Forsyth, P.D., Howe, D., ... Schuck, C. (1989). Superdeformed bands in 150Gd and 151Tb: Evidence for the influence of high-N intruder states at large deformations. Physics Letters B, 218 (2), 137-142. http://doi.org/10.1016/0370-2693(89)91408-1

    Conference papers

    Allen, T., Duncan, O., Foster, L., Senior, T., Zampieri, D., Edeh, V., & Alderson, A. (2017). Auxetic foam for snowsport safety devices. In Snow sports trauma and safety: proceedings of the International Society of Skiing Safety. International Society for Skiing Safety: http://doi.org/10.1007/978-3-319-52755-0_12

    Duncan, O., Foster, L., Senior, T., Allen, T., & Alderson, A. (2016). A comparison of novel and conventional fabrication methods for auxetic foams for sports safety applications. Procedia Engineering, 147, 384-389. http://doi.org/10.1016/j.proeng.2016.06.323

    Allen, T., Martinello, N., Zampieri, D., Hewage, T., Senior, T., Foster, L., & Alderson, A. (2015). Auxetic Foams for Sport Safety Applications. Procedia Engineering, 112, 104-109. http://doi.org/10.1016/j.proeng.2015.07.183

    Sanami, M., Ravirala, N., Alderson, K., & Alderson, A. (2014). Auxetic materials for sports applications. Procedia Engineering, 72, 453-458. http://doi.org/10.1016/j.proeng.2014.06.079

    Yao, Y., Alderson, K., Alderson, A., & Leng, J. (2013). Modelling of the structure-property relationships in the α-quartz structures. Proceedings of SPIE - The International Society for Optical Engineering, 8691. http://doi.org/10.1117/12.2009484

    Yao, Y.T., Alderson, A., & Alderson, K.L. (2012). Molecular modelling of structure and deformation mechanisms of auxetic behaviour in the α-quartz structures. Proceedings of SPIE - The International Society for Optical Engineering, 8409. http://doi.org/10.1117/12.923695

    Yao, Y., Alderson, A., Alderson, K.L., & Leng, J. (2012). Modelling of the structure-property relationships in auxetic nanotube. ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2012, 1, 213-217. http://doi.org/10.1115/SMASIS2012-8194

    Yao, Y.T., Alderson, A., & Alderson, K.L. (2012). Towards auxetic nanofibres-molecular modelling of auxetic behaviour in cellulose II. Proceedings of SPIE - The International Society for Optical Engineering, 8342. http://doi.org/10.1117/12.914692

    Alderson, A. (2012). Auxetic fibres: History, applications, and future perspectives. Fiber Society 2012 Fall Meeting and Technical Conference in Partnership with Polymer Fibers 2012: Rediscovering Fibers in the 21st Century.

    Pierron, F., McDonald, S.A., Hollis, D., Withers, P.J., & Alderson, A. (2011). Assessment of the deformation of low density polymeric auxetic foams by X-ray tomography and digital volume correlation. ADVANCES IN EXPERIMENTAL MECHANICS VIII, 70, 93-+. http://doi.org/10.4028/www.scientific.net/.93

    Pierron, F., McDonald, S.A., Hollis, D., Withers, P.J., & Alderson, A. (2011). Assessment of the deformation of low density polymeric auxetic foams by X-ray tomography and digital volume correlation. Applied Mechanics and Materials, 70, 93-98. http://doi.org/10.4028/www.scientific.net/AMM.70.93

    Chirima, G.T., Zied, K., Ravirala, N., Burgess, A., Dooling, P., Alderson, K.L., & Alderson, A. (2009). Modelling of auxetic particulate-filled polymeric composites. ICCM International Conferences on Composite Materials.

    Alderson, A., Alderson, K.L., Chirima, G., Ravirala, N., & Zied, K. (2009). Novel tri-coordinated chiral honeycombs. ICCM International Conferences on Composite Materials.

    Chirima, G.T., Zied, K.M., Ravirala, N., Alderson, K.L., & Alderson, A. (2009). Numerical and analytical modelling of multi-layer adhesive-film interface systems. Physica Status Solidi (B) Basic Research, 246 (9), 2072-2082. http://doi.org/10.1002/pssb.200982038

    Narojczyk, J.W., Alderson, A., Imre, A.R., Scarpa, F., & Wojciechowski, K.W. (2008). Negative Poisson's ratio behavior in the planar model of asymmetric trimers at zero temperature. Journal of Non-Crystalline Solids, 354 (35-39), 4242-4248. http://doi.org/10.1016/j.jnoncrysol.2008.06.085

    Simkins, V.R., Ravirala, N., Davies, P.J., Alderson, A., & Alderson, K.L. (2008). An experimental study of thermal post-production processing of auxetic polypropylene fibres. Physica Status Solidi (B) Basic Research, 245 (3), 598-605. http://doi.org/10.1002/pssb.200777717

    Alderson, A., Rasburn, J., & Evans, K.E. (2007). Mass transport properties of auxetic (negative Poisson's ratio) foams. Physica Status Solidi (B) Basic Research, 244 (3), 817-827. http://doi.org/10.1002/pssb.200572701

    Harkati, E.H., Bezazi, A., Scarpa, F., Alderson, K., & Alderson, A. (2007). Modelling the influence of the orientation and fibre reinforcement on the Negative Poisson's ratio in composite laminates. Physica Status Solidi (B) Basic Research, 244 (3), 883-892. http://doi.org/10.1002/pssb.200572707

    Grima, J.N., Zammit, V., Gatt, R., Alderson, A., & Evans, K.E. (2007). Auxetic behaviour from rotating semi-rigid units. Physica Status Solidi (B) Basic Research, 244 (3), 866-882. http://doi.org/10.1002/pssb.200572706

    Grima, J.N., Gatt, R., Alderson, A., & Evans, K.E. (2006). An alternative explanation for the negative Poisson's ratios in α-cristobalite. Materials Science and Engineering A, 423 (1-2), 219-224. http://doi.org/10.1016/j.msea.2005.08.230

    Grima, J.N., Gatt, R., Ravirala, N., Alderson, A., & Evans, K.E. (2006). Negative Poisson's ratios in cellular foam materials. Materials Science and Engineering A, 423 (1-2), 214-218. http://doi.org/10.1016/j.msea.2005.08.229

    Ravirala, N., Alderson, K.L., Davies, P.J., Simkins, V.R., & Alderson, A. (2006). Negative Poisson's Ratio Polyester Fibers. Textile Research Journal, 76 (7), 540-546. http://doi.org/10.1177/0040517506065255

    Alderson, A., Alderson, K.L., Davies, P.J., & Smart, G.M. (2005). The effects of processing on the topology and mechanical properties of negative Poisson's ratio foams. American Society of Mechanical Engineers, Aerospace Division (Publication) AD, 70 AD, 503-510. http://doi.org/10.1115/IMECE2005-82404

    Grima, J.N., Gatt, R., Farrugia, P.S., Alderson, A., & Evans, K.E. (2005). Auxetic cellular materials and structures. American Society of Mechanical Engineers, Aerospace Division (Publication) AD, 70 AD, 489-495. http://doi.org/10.1115/IMECE2005-82260

    Grima, J.N., Gatt, R., Alderson, A., & Evans, K.E. (2005). On the potential of connected stars as auxetic systems. Molecular Simulation, 31 (13), 925-935. http://doi.org/10.1080/08927020500401139

    Grima, J.N., Gatt, R., Bray, T.G.C., Alderson, A., & Evans, K.E. (2005). Empirical modelling using dummy atoms (EMUDA): An alternative approach for studying "auxetic" structures. Molecular Simulation, 31 (13), 915-924. http://doi.org/10.1080/08927020500401121

    Alderson, A., Davies, P.J., Evans, K.E., Alderson, K.L., & Grima, J.N. (2005). Modelling of the mechanical and mass transport properties of auxetic molecular sieves: An idealised inorganic (zeolitic) host-guest system. Molecular Simulation, 31 (13), 889-896. http://doi.org/10.1080/08927020500378055

    Alderson, A., Davies, P.J., Williams, M.R., Evans, K.E., Alderson, K.L., & Grima, J.N. (2005). Modelling of the mechanical and mass transport properties of auxetic molecular sieves: An idealised organic (polymeric honeycomb) host-guest system. Molecular Simulation, 31 (13), 897-905. http://doi.org/10.1080/08927020500385852

    Davies, P.J., Horrocks, A.R., & Alderson, A. (2005). The sensitisation of thermal decomposition of ammonium polyphosphate by selected metal ions and their potential for improved cotton fabric flame retardancy. Polymer Degradation and Stability, 88 (1), 114-122. http://doi.org/10.1016/j.polymdegradstab.2004.01.029

    Alderson, K.L., Simkins, V.R., Coenen, V.L., Davies, P.J., Alderson, A., & Evans, K.E. (2005). How to make auxetic fibre reinforced composites. Physica Status Solidi (B) Basic Research, 242 (3), 509-518. http://doi.org/10.1002/pssb.200460371

    Ravirala, N., Alderson, A., Alderson, K.L., & Davies, P.J. (2005). Expanding the range of auxetic polymeric products using a novel melt-spinning route. Physica Status Solidi (B) Basic Research, 242 (3), 653-664. http://doi.org/10.1002/pssb.200460384

    Grima, J.N., Alderson, A., & Evans, K.E. (2005). Auxetic behaviour from rotating rigid units. Physica Status Solidi (B) Basic Research, 242 (3), 561-575. http://doi.org/10.1002/pssb.200460376

    Alderson, A., Alderson, K.L., Evans, K.E., Grima, J.N., Williams, M.R., & Davies, P.J. (2005). Modelling the deformation mechanisms, structure-property relationships and applications of auxetic nanomaterials. Physica Status Solidi (B) Basic Research, 242 (3), 499-508. http://doi.org/10.1002/pssb.200460370

    Alderson, A., Alderson, K.L., Evans, K.E., Grima, J.N., & Williams, M. (2005). Modelling of negative poisson's ratio nanomaterials: Deformation mechanisms, structure-property relationships and applications. Journal of Metastable and Nanocrystalline Materials, 23, 55-58. http://doi.org/10.4028/www.scientific.net/JMNM.23.55

    Whitty, J.P.M., Alderson, A., Myler, P., & Kandola, B. (2003). Towards the design of sandwich panel composites with enhanced mechanical and thermal properties by variation of the in-plane Poisson's ratios. Composites Part A: Applied Science and Manufacturing, 34 (6 SPEC), 525-534. http://doi.org/10.1016/S1359-835X(03)00058-7

    Alderson, A., Vinton, S.J., & Wimbush, S.C. (1999). Modelling the response of polymeric thin-film devices subject to X-ray irradiation. Synthetic Metals, 102 (1-3), 951-952. http://doi.org/10.1016/S0379-6779(98)00975-8

    Cullen, D.M., Riley, M.A., Alderson, A., Ali, I., Bengtsson, T., Bentley, M.A., ... Wyss, R. (1990). Evidence for octupole softness of the superdeformed shape from band interactions in 193,4Hg. Nuclear Physics, Section A, 520 (C). http://doi.org/10.1016/0375-9474(90)91137-G

    Riley, M.A., Roberts, J.W., Simpson, J., Alderson, A., Ali, I., Cullen, D.M., ... Mo, J.N. (1990). The unpaired spectroscopy of 161,162Er at spins up to 50h{stroke}. Nuclear Physics, Section A, 520 (C). http://doi.org/10.1016/0375-9474(90)91153-I

    Theses / Dissertations

    Duncan, O. (2019). Auxetic foams for sports applications. (Doctoral thesis). Supervised by Alderson, A. http://doi.org/10.7190/shu-thesis-00191

    Shah, D. (2018). Novel expansion mechanisms for space creation and organ retraction during laparoscopic surgery. (Doctoral thesis). Supervised by Alderson, A.

  • Media

    Andy joined the University in 2013 from the University of Bolton. He is an experienced interviewee for print and broadcast media, mainly around the design and use of auxetic materials - which can be used for a variety of transport, advanced manufacturing and healthcare technologies, including in keyhole surgery. 

    Notable media coverage:

    - The Conversation (Jan 2017). We’ve created a new vibration-proof ‘metamaterial’ that could save premature babies’ lives.
    - The Conversation (May 2015). How seashells could inspire safer headgear.
    - BBC Learning Zone (2015). Biometrics - Designed by Nature
    - AZOM (Oct 2014). An Introduction to Auxetic Materials: an Interview with Professor Andrew Alderson.

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