[1]    J.N. Grima, Auxetic Materials, In McGraw-Hill Yearbook of Science & Technology (2009) p. 41-44. 

[2]    J.N. Grima, Invited to deliver paper at the 6th International Workshop on Auxetics and Related Systems, Bolton (UK), September 2009. 

[3]    J.N. Grima, Invited to deliver Lecture at the 6th International Workshop on Functional Materials FNMA'09, L’Aquila (Italy), September 2009. 

[4]    J.N. Grima, R. Gatt, R.N. Cassar, B. Ellul, L. Farrugia, D. Attard, Negative Systems Under Pressure,  Invited Paper presented at the 5th International Workshop on Auxetics and Related Systems, Bristol (UK), September 2008.

[5]    J.N. Grima, R. Gatt, D. Attard and R.N. Cassar, Negative Materials and Structures, Invited Lecture presented at the 5th International Conference on Functional and Nanostructured Materials, Lviv, Ukraine, September 2008.

[6]    J.N. Grima, Auxetic and other negative systems, Seminar presented at the Department of Chemistry, University College London, UK, March 2008.

[7]    J.N. Grima, Creating an enabling environment for research at the University, Oration delivered at the University of Malta graduation ceremony, Valletta Malta, November 2007.

[8]    J.N. Grima, Negative, negative and nore negative: Systems exhibiting negative Poisson’s ratio, Negative Thermal Expansion and/or Negative Compressibility, Key-Note Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007. 

[9]    J.N. Grima, Some recent developments on systems exhibiting negative behaviour, Invited Lecture presented at the 4th International Workshop on Functional Materials FNMA'07, Gdansk, Poland, September 2007.

[10]    J.N. Grima, Auxetics materials - The more you stretch them, the fatter they become, Seminar presented at the Melville Laboratory, Department of Chemistry, University of Cambridge, UK, June 2006.

[11]    J.N. Grima, R. Gatt, P.S. Farrugia, A. Alderson and K.E. Evans, Auxetic cellular materials and structures, Invited Paper presented at the ASME International Mechanical Engineering Congress Proceedings, November 2005.

[12]    J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On rotating ‘rigid’ and ‘semi-rigid’ units and their potential for auxetic behaviour, Invited Lecture presented at the 2nd Workshop on Auxetic and Related Systems, Poznan, Poland, August 2005.

[13]    J.N. Grima, Auxetic Materials: Recent Advances, Invited Keynote Contribution at AUXETNET’s Second Annual Young Researchers Forum, Cambridge (UK), March 2005.

[14]    J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, Auxetic behaviour for rotating rigid units, Invited Lecture presented at the 1st Workshop on Auxetic and Related Systems, Poznan, Poland, June 2004.

[15]    J.N. Grima, Molecular level auxetic materials, Invited Key-Note Paper presented at the AUXETNET’s First Annual Young Researchers Forum, Bolton, UK, April 2004.

[16]    J.N. Grima, Auxetics materials, Seminar presented at the Department of Engineering, University of Exeter, UK, 1999.

[1]    J.N. Grima, R. Gatt, P.S. Farrugia, V. Zammit and D. Attard, Systems with adjustable properties including negative Poisson’s ratios, negative compressibility and negative thermal expansion, including systems made from rods / ligaments which bend when subjected to a change in pressure. Patent No. 4191 filed with Malta Patent Office on 4 Sept 2007.

[2]    J.N. Grima, D. Attard and R. Gatt, A novel process for the manufacture of auxetic foams and for the conversion of auxetic foam to conventional foam. Patent No. 4236 filed with Malta Patent Office on 30 Oct 2008.

[1]    J.N. Grima, R.N. Cassar and R. Gatt, On the effect of hydrostatic pressure on the auxetic character of NAT-type silicates, J. Non-Cryst. Sol. (In Print).

[2]    J.N. Grima, D. Attard, R. Gatt and R.N. Cassar, A novel process for the manufacture of auxetic foams and for their reconversion to conventional form,  Adv. Eng. Mater. (In Print).

[3]    J.N. Grima, R. Gatt and B. Ellul, A finite element study on the potential for negative thermal expansion and negative compressibility of triangular building blocks, J. Chinese Ceramic Soc. (In Print).

[4]    R. Gatt, D. Attard, J.N. Grima, On the behaviour of bi-material strips when subjected to changes in external hydrostatic pressure, Scripta Materialia, 60 (2009) p. 65-67.

[5]    J.N. Grima, D. Attard, R.N. Cassar, L. Farrugia, L. Trapani and R. Gatt, On the mechanical properties and auxetic potential of various organic networked polymers, Molecular Simulation, 34 (2008) p. 1149 – 1158.

[6]    J.N. Grima, D. Attard and R. Gatt, Truss-type systems exhibiting negative compressibility, Phys. Stat. Sol. (b) , 245 (2008) p. 2405-2414.
 
[7]    D. Attard and J.N. Grima, Auxetic Behaviour from rotating rhombi, Phys. Stat. Sol. (b), 245 (2008) p. 2395-2404.

[8]    J.N. Grima, P.S. Farrugia, C. Caruana, R. Gatt and D. Attard, Auxetic behaviour from stretching connected squares, J. Mater. Sci., 34 (2008) p. 5962-5971.

[9]    R. Gatt and J.N. Grima, Negative Compressibility, Phys. Stat. Sol. RRL, 2 (2008) p. 236-238.

[10]    J.N. Grima, V. Zammit, R, Gatt, D. Attard, C. Caruana and T.G. Chircop Bray, On the role of rotating tetrahedra for generating auxetic behaviour in NAT and related systems, J. Non-Cryst. Sol., 354 (2008) p. 4214-4220.

[11]    J.N. Grima, R. Gatt and P.S. Farrugia, On the properties of auxetic meta-tetrachiral structures, Phys. Stat. Sol. (b), 245 (2008) p. 511-520.

[12]    R. Gatt, V. Zammit, C. Caruana and J.N. Grima, On the atomic level deformations in the auxetic zeolite natrolite, Phys. Stat. Sol. (b), 245 (2008) p. 502-510.

[13]    J.N. Grima, P.S. Farrugia, R. Gatt and D. Attard, On the auxetic properties of rotating rhombi and parallelograms: A preliminary investigation, Phys. Stat. Sol. (b),  245 (2008) p. 521-529.

[14]      J.N. Grima, P.S. Farrugia, R. Gatt and V. Zammit, A system with adjustable positive or negative thermal expansion, Proc. Royal. Soc. A., 463 (2007) p. 1585–1596.

[15]    J.N. Grima, J.J. Williams, R. Gatt, V. Zammit, A. Alderson, R.I. Walton and K.E. Evans, Natrolite: A zeolite with negative Poisson’s ratios, J. Appl. Phys., 101 (2007) 086102.

[16]    J.N. Grima, P.S. Farrugia, R. Gatt and V. Zammit, Connected triangles exhibiting negative Poisson’s ratios and negative thermal expansion, J. Phys. Soc. Jpn., 76 (2007) 025001.

[17]    J.N. Grima, V. Zammit, R. Gatt, A. Alderson and K.E. Evans, Auxetic behaviour from rotating semi-rigid units, Phys. Stat. Sol. (b), 244 (2007) p. 866-882.

[18]    J.N. Grima, V. Zammit and R. Gatt, Negative Thermal Expansion, Xjenza - Journal of the Malta Chamber of Scientists, 11 (2006) p. 17-29.

[19]    J.N. Grima, R. Gatt, N. Ravirala, A. Alderson and K.E. Evans, Negative Poisson’s ratios in cellular foam materials, Mater. Sci & Eng. A, 423 (2006) p. 214-218.

[20]    J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, An alternative explanation for the negative Poisson’s ratios in alpha-cristobalite, Mater. Sci & Eng. A, 423 (2006) p. 219-224.

[21]    J.N. Grima and K.E. Evans, Auxetic behaviour from rotating triangles, J. Mater. Sci., 41 (2006) p. 3193 - 3196.

[22]    J.N. Grima, R. Gatt, V. Zammit, A. Alderson and K.E. Evans, On the suitability of empirical models to simulate the mechanical properties of alpha-cristobalite, Xjenza - Journal of the Malta Chamber of Scientists, 10 (2005) p. 24-31.

[23]    J.N. Grima, R. Gatt, T.G. Chircop Bray, A. Alderson and K.E. Evans, Empirical Modelling Using Dummy Atoms (EMUDA): An alternative approach for studying ‘auxetic’ structures, Molecular Simulation, 31 (2005) p. 915-924.

[24]    J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On the potential of connected stars as auxetic systems, Molecular Simulation, 31 (2005) p. 925-935.

[25]    J.N. Grima, J.J. Williams, R. Gatt and K.E. Evans, Modelling of auxetic networked polymers built from calix[4]arene building blocks, Molecular Simulation, 31 (2005) p. 907-913.

[26]    A. Alderson, P.J. Davies, K. E. Evans, K.L. Alderson and J.N. Grima, Modelling of the mechanical and mass transport properties of auxetic molecular sieves: an idealised inorganic (zeolitic) host-guest system, Molecular Simulation, 31 (2005) p. 889-896.

[27]    A. Alderson, P.J. Davies, M.R. Williams, K.E. Evans, K.L. Alderson and J.N. Grima, Modelling of the mechanical and mass transport properties of auxetic molecular sieves: an idealised organic (polymeric honeycomb) host-guest system,  Molecular Simulation, 31 (2005) p. 897-905.

[28]    J.N. Grima, J.J. Williams and K.E. Evans, Networked calix[4]arene polymers with unusual mechanical properties, Chem. Comm., (2005) p. 4065-4067.

[29]      J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On the origin of auxetic behaviour in the silicate alpha-cristobalite, J. Mater. Chem., 15 (2005) p. 4003 – 4005.

[30]    J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, On the auxetic properties of ‘rotating rectangles’ with different connectivity, J. Phys. Soc. Jpn., 74 (2005) p. 2866-2867.

[31]    N. Gaspar, X.J. Ren, J.N. Grima, C.W. Smith  and K.E. Evans, Novel  honeycombs  with  Auxetic  behaviour, Acta Materialia, 53 (2005) p. 2439-2445.

[32]    J.N. Grima, A. Alderson and K.E. Evans, An alternative explanation for the negative Poisson's ratios in auxetic foams, J. Phys. Soc. Jpn., 74 (2005) p. 1341-1342.

[33]    J.N. Grima, A. Alderson and K.E. Evans, Auxetic behaviour from rotating rigid units, Phys. Stat. Sol. (b), 242 (2005) p. 561-575.

[34]    A. Alderson, K.L. Alderson, K.E. Evans, J.N. Grima, M. Williams and P.J. Davies, Modelling the deformation mechanisms, structure-property relationships and applications of auxetic nanomaterials, Phys. Stat. Sol. (b), 242 (2005) p. 499–508.

[35]    A. Alderson, K.L. Alderson, K.E. Evans, J.N. Grima and M. Williams, Modelling of negative Poisson’s ratio nanomaterials: deformation mechanisms, structure-property relationships and applications, Journal of Metastable & Nanocrystalline Materials, 23 (2005) p. 55-58.

[36]    J.N. Grima, A. Alderson and K.E. Evans, Negative Poisson’s ratios from rotating rectangles, Computational Methods in Science & Technology, 10 (2004) p. 137-145.

[37]    A. Alderson, K.L. Alderson, K.E. Evans, J.N. Grima, M.R. Williams, and P.J. Davies, Molecular modelling of the deformation mechanism acting in auxetic silica, Computational Methods in Science & Technology, 10 (2004) p. 117-126.

[38]    A. Alderson, J. Rasburn, K.E. Evans and J.N. Grima, Auxetic polymeric filters display enhanced de-fouling and pressure compensation properties, Membrane Technology, 137 (2001) p. 6-8.

[39]    J.N. Grima, R. Jackson, A. Anderson and K.E. Evans, Do zeolites have negative Poisson's ratios?, Adv. Mater., 12 (2000) p. 1912-1918.

[40]    C.W. Smith, J.N. Grima and K.E. Evans, A novel mechanism for generating auxetic behaviour in reticulated foams: Missing rib foam model, Acta Materialia, 48 (2000) p. 4349-4356.

[41]      J.N. Grima and K.E. Evans, Rotating squares with negative Poisson's ratios, J. Mat. Sci. Lett., 19 (2000) p.1563-1565.

[42]      J.N. Grima and K.E. Evans, Self expanding networks, Chem. Comm., (2000) p.1531-1532.

[43]    J.N. Grima, R. Gatt, P.S. Farrugia, A. Alderson and K.E. Evans, Auxetic cellular materials and structures, ASME International Mechanical Engineering Congress Proceedings (2005).

[44]    J.N. Grima and A.J. Vella, Adequacy of pre-university mathematics curriculum as a preparation for a tertiary education in the sciences, Proceedings of the International CASTME Conference, Malta, April 2002.

[45]    J.N. Grima and K.E. Evans, Networked polymers with negative Poisson's ratios, ACS Polymeric Materials Science & Engineering Preprints, 83 (2000) p. 367-368.

[46]    C.W. Smith, J.N. Grima, B.D. Caddock, R.J. Wootton and K.E. Evans, Microstructures producing negative Poisson's ratios: Experiment and models, SEM Theoretical, Experimental and Computational Mechanics Preprints (1999) p.184-187.

[47]    J.N. Grima, D. Attard, R. Gatt, Brian Ellul and R.N. Cassar, A novel chemo-mechanical process for the manufacture of auxetic foams and for their re-conversion to conventional form, Accepted for presentation at ICMAT 2009, Singapore, June 2009.

[48]    J.N. Grima, D. Attard, R. Gatt, B. Ellul and E. Manicaro, Scale independent models for generating negative Poisson’s ratios, negative thermal expansion and/or negative compressibility, Accepted for presentation at ICMAT 2009, Singapore, June 2009.

[49]    J.N. Grima, R. Gatt, R. Cassar, D. Attard and V. Zammit, Auxetic nanostructured materials under pressure, Accepted for presentation at ICMAT 2009, Singapore, June 2009.

[50]    J.N. Grima, R. Gatt, E. Manicaro, B. Spiteri, D. Attard, R.N. Cassar, B. Ellul and V. Zammit, On the suitability of two dimensional mechanism based models for modelling the Poisson’s ratio of nano- and micro-structured auxetic and non-auxetic materials, Accepted for presentation at ICMAT 2009, Singapore, June 2009.

[51]    J.N. Grima and C. Zerafa, Polymers with laterally attached rods exhibiting negative Poisson's ratio, Paper presented at the Contemporary Science of Polymeric Materials Symposium, Valletta (Malta), February-March 2009.

[52]    J.N. Grima, R. Cassar, L. Farrugia, L. Trapani and D. Attard, Auxetic networked polymers, Paper presented at the Contemporary Science of Polymeric Materials Symposium, Valletta (Malta), February-March 2009.

[53]    D. Attard, and J.N. Grima, Is solid benzene auxetic?, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[54]    V. Zammit, R. Gatt and J.N. Grima, Anomalous mechanical and thermal properties in natrolite single crystals, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[55]    J.N. Grima, R.N. Cassar and R. Gatt, On the extent of auxeticity in NAT-type systems at various hydrostatic pressures, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[56]    J.N. Grima and R. Gatt, On the mechanical properties of beta-cristobalite, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[57]    J.N. Grima, D.Attard, R. Gatt, R.N. Cassar and B. Ellul, A novel and reversible method for the manufacture of auxetic polyurethane foams, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[58]    J.N. Grima, E. Manicaro, B. Spiteri, R.N. Cassar and R. Gatt, On the mechanical properties of the molecular level ‘VFI’ honeycomb, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[59]    J.N. Grima, L. Farrugia, R.N. Cassar, L. Trapani and D. Attard, A comparative study of organic networked systems with negative Poisson’s ratios, Paper presented at the 4th National Chemistry Symposium, Msida Malta, November 2008.

[60]    J.N. Grima, V. Zammit and R. Gatt, Anomalous behaviour in Natrolite, Paper presented at the 5th International Workshop on Auxetics and Related Systems, Bristol (UK), September 2008.

[61]    J.N. Grima, R. Gatt and D. Attard, On Constructs Made From Chiral Building Blocks, Paper presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[62]    J.N. Grima, R. Gatt, D. Attard and B. Ellul, Modelling of flexing metachirals with thin ribs, Paper presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[63]    D. Attard, R. Gatt and J.N. Grima, An improved analytical model for chiral structures,  Paper presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[64]    R. Gatt, V. Zammit, D. Attard and J.N. Grima, Negative effects in crystalline solids, Paper presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[65]    B. Ellul, M. Muscat and J.N. Grima, On the potential of auxetic materials for improving the buckling load resistance, Paper presented at the 5th International Workshop on Auxetics and Related Systems), Bristol (UK), September 2008.

[66]    J.N. Grima and, D. Attard, On the auxetic properties of solid benzene, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007 (winner of the best paper award).

[67]    J.N. Grima, P.S. Farrugia, C. Caruana and R. Gatt, An alternative way for achieving negative Poisson’s ratio from connected squares: The 'Stretching Squares' Mechanism, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.

[68]    J.N. Grima, P.S. Farrugia, R. Gatt and D. Attard, On the adjustable auxeticity of rotating rhombi and parallelograms, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta,  September 2007.

[69]    R. Gatt, J.N. Grima and P.S. Farrugia, Negative behaviour from bi-Material elements, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007.
   
[70]    J.N. Grima, V. Zammit, R. Gatt, M. Wood et al., Natrolite: A zeolite with anomalous (negative) thermal and mechanical properties, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007. 

[71]    J.N. Grima, R. Gatt and T.G. Chircop Bray, On the properties of rotating rigid tetrahedra having zeolite-type connectivities, Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007. 

[72]    R. Gatt and J.N. Grima, Ceramics: A new class of auxetic materials? Paper presented at the 4th International Workshop on Auxetics and Related Systems, Malta, September 2007. 

[73]    J.N. Grima and A. Sparavigna, Phonons in a two-dimensional auxetic lattice, Paper presented at the 4th International Workshop on Auxetics and Related Systems, September 2007.

[74]    J.N. Grima and R. Gatt, Statistical techniques as an integral part of first-year chemistry laboratory classes (CHED 455), Paper presented at the 234th National ACS meeting, Boston MA, (USA), August  2007.

[75]    J.N. Grima, R. Gatt, and T.G. Chircop Bray, Teaching of force-field based modelling techniques through EMUDA modelling (CHED410), Paper presented at the 234th National ACS meeting, Boston MA, (USA), August  2007.

[76]    J.N. Grima, R. Gatt and V. Zammit, Modeling and experimental work on the auxetic and thermal properties of the zeolite natrolite (INOR 889), Paper presented at the 234th National ACS meeting, Boston MA, (USA), August  2007.

[77]    J.N. Grima, V. Zammit, R. Gatt, M. Wood et al., Zeolites with negative Poisson’s ratios: The effect of interstitial cations and water molecules on the Poisson’s ratios of NAT, Paper presented at the 5th International Conference on Inorganic Materials 2006, Ljubljana (Slovenia), September 2006.

[78]    J.N. Grima, R. Gatt and V. Zammit, On the suitability of commonly used force-fields for simulating the Poisson's ratios and moduli of single crystalline materials, Paper presented at the 232nd National ACS meeting, San Francisco CA (USA), September 2006.

[79]    J.N. Grima, R. Gatt and T.G. Chircop Bray, Modelling of mechanical structures using dummy atoms and molecular modeling techniques, Paper presented at the 232nd National ACS meeting, San Francisco CA (USA), September 2006.

[80]    J.N. Grima, R. Gatt, T.G. Chircop Bray, V. Zammit, A. Alderson and K.E. Evans, Auxeticity and microscopic rotations of rigid and semi-rigid units in silicates and zeolites, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[81]    J.N. Grima, R. Gatt, P.S. Farrugia, N. Ravirala, W. Miller, V. Zammit, T.G. Chircop Bray, F. Scarpa, A. Alderson, C.W. Smith, K.E. Evans and K. Alderson, On the auxetic potential of 2D networks constructed from chiral building-blocks, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[82]    J.N. Grima, V. Zammit, P.S. Farrugia and R. Gatt, On the negative thermal properties of connected rods, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[83]    R. Gatt, P.S. Farrugia and J.N. Grima, Auxetic ‘meta-chiral’ networks, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[84]    J.N. Grima, R. Gatt, P.S. Farrugia and K.E. Evans, On the auxetic potential of ‘tetra-chiral’ and ‘anti-tetrachiral’ networks, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[85]    J.N. Grima, R. Gatt, P.S. Farrugia, N. Ravirala, A. Alderson, K. Alderson and K.E. Evans, On the relationship between auxetic ‘rotating polygons’ and ‘chiral’ systems, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[86]    F. Nezare, A. Alderson, P. Bullman, P. Davies and J.N. Grima, Modelling of phase transformation behaviour in anomalous systems, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[87]    N. Ravirala, K.L. Alderson, J.N. Grima and A. Alderson, Linear Elastic in-plane mechanical properties of trichiral and anti-trichiral honeycombs, Paper presented at the 1st International Conference on Auxetics and Anomalous Systems (Incorporating the 3rd Int. Workshop on Auxetics and Related Systems), Exeter UK, September 2006.

[88]    R. Gatt, J.N. Grima, F. Nazarre, A. Alderson and K.E. Evans, On the properties of alpha-cristobalite, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[89]    J.N. Grima, V. Zammit and R. Gatt, Modelling of inorganic single crystalline auxetic materials, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[90]    J.N. Grima, B. Spiteri, L. Trapani and K.E. Evans, Organic networked systems with negative Poisson’s ratios, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[91]    J.N. Grima, V. Zammit and L. Trapani, Negative thermal expansion – materials which get smaller when heated, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[92]    J.N. Grima, R. Gatt, V. Zammit, T.G. Chircop Bray et al., On negative thermal expansion and negative poisson’s ratios: converting ‘positive materials’ to ‘negative materials’, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[93]    J.N. Grima, T.G. Chircop Bray and R. Gatt, Modelling of self-expanding structures using molecular modelling techniques (EMUDA) , Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[94]    J.N. Grima, R. Gatt, A.C. Bonnici and T.G. Chircop Bray, On dilating connected squares, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[95]    J.N. Grima, T.G. Chircop Bray and R. Gatt, Rotating ‘dilating non-rigid squares, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[96]    J.N. Grima, B. Spiteri and R. Gatt, On the mechanical properties of chlorosodalite, Paper presented at the 3rd National Chemistry Symposium, Msida Malta, March 2006.

[97]    F. Nezare, A. Alderson, P. Davies, P. Bullman and J.N. Grima, Modelling the alpha-to-beta phase change in cristobalite, Paper Presented at the 2nd Workshop on Auxetic and Related Systems, Poznan (Poland), August 2005.

[98]    J.N. Grima, R. Gatt, A. Alderson, and K.E. Evans, The deformation mechanisms in the auxetic mineral alpha-cristobalite, Paper presented at the RSC MC7, Edinburgh, UK, 2005

[99]    J.N. Grima, R. Gatt, A. Alderson, and K.E. Evans, On the origin of the negative Poisson’s ratios in alpha-cristobalite, Paper presented at the ICMAT, Singapore, 2005

[100]    J.N. Grima, R. Gatt, N. Ravirala, A. Alderson, and K.E. Evans, Negative Poisson’s ratios in cellular materials, Paper presented at the ICMAT, Singapore,  2005

[101]    J.N. Grima, R. Gatt, A. Vella, A. Alderson, and K.E. Evans, Modelling of alpha-cristobalite using Molecular Dynamics Simulations, Paper presented at AUXETNET’s Second Annual Young Researchers Forum, Cambridge (UK), March 2005 (winner of the best paper award).

[102]    J.N. Grima, T.G. Chircop-Bray, S.L. Borg-Bonnici, R. Gatt, and K.E. Evans, Modelling of Auxetic Macrostructres using ‘EMUDA Modelling’ Techniques, Paper presented at AUXETNET’s Second Annual Young Researchers Forum, Cambridge (UK), March 2005

[103]    I. Mifsud-Bons, J.N. Grima, S. Gatt, Promoting scientific literacy in Malta: A practical perspective, Paper presented at the European Workshop on The Challenges of EU’ Enlargement on Science Literacy and Development, Malta, January 2005.

[104]    J.N. Grima, R. Gatt and K.E. Evans, Modelling of the negative Poisson’s ratios in alpha-cristobalite, Paper presented at the Fourth International Inorganic Materials Conference, Antwerp (Belgium), September 2004.

[105]    J.N. Grima, R. Gatt, A. Alderson and K.E. Evans, Modelling of the auxetic behaviour in alpha-cristobalite, Paper presented at the 228th National ACS meeting, Philadelphia (USA), August 2004.

[106]    R. Gatt and J.N. Grima, Negative Poisson’s Ratios in alpha-cristobalite, Paper presented at AUXETNET’s First Annual Young Researchers Forum, Bolton (UK), April 2004.

[107]    B. Spiteri, J.J. Williams, K.E. Evans and J.N. Grima, Auxeticity in calix(4)arene systems, Paper presented at AUXETNET’s First Annual Young Researchers Forum, Bolton (UK), April 2004.

[108]    M. Wood, A. Alderson, K.E. Evans and J.N. Grima, Molecular modelling of auxetic zeolites,  Paper presented at the 2nd National Chemistry Symposium, March 2004, Malta.

[109]    J.J. Williams, K.E. Evans and J.N. Grima, Molecular modelling of calix(4)arene systems with unusual mechanical properties, Paper presented at the 2nd National Chemistry Symposium, March 2004, Malta.

[110]    B. Spiteri, R. Gatt  and J.N. Grima, Materials with negative Poisson's ratios, Paper presented at the Second National Chemistry Symposium, Msida (Malta), March 2004.

[111]    R. Gatt, B. Spiteri and J.N. Grima, Molecular auxetic materials, Paper presented at the Second National Chemistry Symposium, Msida (Malta), March 2004.

[112]    J.N. Grima and A.J. Vella, Adequacy of pre-university mathematics curriculum as a preparation for chemistry undergraduate studies, Paper presented at the 226th ACS National Meeting, New York (USA), September 2003.

[113]    J.N. Grima, M. Wood, A. Alderson and K.E. Evans, Zeolites with unusual mechanical properties, Paper presented at the 226th ACS National Meeting, New York (USA), September 2003.

[114]    J.N. Grima and A.J.Vella, Adequacy of pre-university mathematics curriculum as a preparation for a tertiary education in the sciences, Paper presented at the International CASTME Conference, Malta, April 2002.

[115]    J.N Grima and K.E. Evans, Networked polymeric calix[4]arenas with unusual mechanical materials, Paper presented at the 5th Materials Chemistry conference, Bangor (Wales), July 2001 (P22).

[116]    J.N. Grima, A. Alderson and K.E. Evans, Modelling zeolites with negative Poisson's ratios, Paper presented at 2nd Inorganic Materials Conference, Sta. Barbara, USA, September 2000.

[117]    J.N. Grima and K.E. Evans, Networked polymers with negative Poisson's ratios, Paper presented at 220th ACS National Meeting (PMSE Division), Washington DC, August 2000.

[118]    J.N. Grima, A. Alderson and K.E. Evans, Zeolites with negative Poisson's ratios, Paper presented at 220th ACS National Meeting (Inorganic Division), Washington DC, August 2000.

[119]    J.N. Grima, A. Alderson and K.E. Evans, Zeolites with negative Poisson's ratios, Paper presented at the 4th Materials Chemistry conference, Dublin (Ireland), July 1999 (P81).

[120]    J.N. Grima and K.E. Evans, Molecular auxetic materials, Paper presented at the 4th Materials Chemistry conference, Dublin (Ireland), July 1999 (B2.1).

[121]    J.N. Grima and K.E. Evans, The modelling and synthesis of auxetic materials, Paper presented at the 3rd Materials Chemistry conference, Exeter (UK), July 1997 (P125).

[122]    J.N. Grima and K.W. Wojciechowski, Preface to Vol. 245 Issue 11 (Special Issue, Nov. 2008, Guest editors: J.N. Grima and K.W. Wojciechowski), Phys. Stat. Sol. (b), 245 (2008) p. 2369-2372.

[123]    J.N. Grima and A.J. Vella, Are we providing our future scientists with enough mathematics?, MathsLine, April 2003.

[124]    J.N. Grima, Auxetics - The more you stretch them, the fatter they become, University of Malta Annual Report, 2002, p. 35-37.

[125]    J.N. Grima, New Auxetic Materials, Volume 1 & 2, PhD Thesis, University of Exeter, UK March 2000.