Three-Dimensional Polymer Constructs Exhibiting a Tunable Negative Poisson's Ratio.
作者： David Y. Fozdar , Pranav Soman , Jin Woo Lee , Li-Hsin Han , Shaochen Chen
关键词: Modulus 、 Composite material 、 Materials science 、 Projection (linear algebra) 、 Poisson distribution 、 Auxetics 、 Poisson's ratio 、 Deformation mechanism 、 Stacking 、 Deformation (engineering)
摘要: Young's modulus and Poisson's ratio of a porous polymeric construct (scaffold) quantitatively describe how it supports transmits external stresses to its surroundings. While is always non-negative highly tunable in magnitude, can, indeed, take on negative values despite the fact that for virtually every naturally occurring artificial material. In some applications, having (an auxetic construct) may be more suitable supporting forces imposed upon by environment. Here, three-dimensional polyethylene glycol scaffolds with ratios are fabricated. Digital micromirror device projection printing (DMD-PP) used print single-layer constructs composed cellular structures (pores) special geometries, arrangements, deformation mechanisms. The presence unit-cellular tunes magnitude polarity (positive or negative) ratio. Multilayer fabricated DMD-PP stacking alternating layers vertical connecting posts. single- multilayer determined from strain experiments, which show (1) accurately predicted analytical models (2) no slipping occurrs between addition new does not affect
syr.edu参考文章(39)
Lorna J. Gibson, Michael F. Ashby, Cellular Solids: Structure and Properties ,(1988)
K E Evans, B D Caddock, Microporous materials with negative Poisson's ratios. II. Mechanisms and interpretation Journal of Physics D. ,vol. 22, pp. 1883- 1887 ,(1989) , 10.1088/0022-3727/22/12/013
Ray H. Baughman, Justin M. Shacklette, Anvar A. Zakhidov, Sven Stafström, Negative Poisson's ratios as a common feature of cubic metals Nature. ,vol. 392, pp. 362- 365 ,(1998) , 10.1038/32842
Leo Rothenburg, AI. AI. Berlin, Richard J. Bathurst, Microstructure of isotropic materials with negative Poisson' s ratio Nature. ,vol. 354, pp. 470- 472 ,(1991) , 10.1038/354470A0
J. B. Choi, R. S. Lakes, Non-linear properties of metallic cellular materials with a negative Poisson's ratio Journal of Materials Science. ,vol. 27, pp. 5375- 5381 ,(1992) , 10.1007/BF02403846
K. E. Evans, A. Alderson, Auxetic Materials : Functional Materials and Structures from Lateral Thinking! Advanced Materials. ,vol. 12, pp. 617- 628 ,(2000) , 10.1002/(SICI)1521-4095(200005)12:9<617::AID-ADMA617>3.0.CO;2-3
R. Lakes, MATERIALS SCIENCE: Deformations in Extreme Matter Science. ,vol. 288, pp. 1976- 1977 ,(2000) , 10.1126/SCIENCE.288.5473.1976
Nitin R. Keskar, James R. Chelikowsky, Negative Poisson ratios in crystalline SiO2 from first-principles calculations Nature. ,vol. 358, pp. 222- 224 ,(1992) , 10.1038/358222A0
N GASPAR, X REN, C SMITH, J GRIMA, K EVANS, Novel honeycombs with auxetic behaviour Acta Materialia. ,vol. 53, pp. 2439- 2445 ,(2005) , 10.1016/J.ACTAMAT.2005.02.006
Rebecca J Jackman, Scott T Brittain, Allan Adams, Mara G Prentiss, George M Whitesides, Design and Fabrication of Topologically Complex, Three-Dimensional Microstructures Science. ,vol. 280, pp. 2089- 2091 ,(1998) , 10.1126/SCIENCE.280.5372.2089