Negative Poisson's ratio materials: possible uses

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  Meaning of Poisson's ratio  
  Rod Lakes 

Possible applications of these negative Poisson's ratio materials


The following applications are envisaged for polymeric or metallic negative Poisson's ratio materials such as re-entrant foams. We never called them metamaterials or auxetics in those days. Negative Poisson's ratio materials are being applied by industry in England, see, e. g. Auxetix, Ltd; see also F. Scarpa group at the University of Bristol, and elsewhere. More uses have been developed in recent years.

Based on Poisson's ratio

Filling for highway joints
Matrix for high performance piezoelectric composite
Knee pads
Elbow pad
Core for curved sandwich panel
Flexible fasteners
Wrestling mats
Air filters
Gaskets
Air filters: tunable, cleanable
Tube or artery cleaner
Pad under carpeting
Ankle wrap
Biomedical implants
Executive toy
Lecture demonstration
Stimulus for thought 		Based on resilience or toughness

Packing material
Knee pads
Elbow pad
Robust shock absorbing material
Sponge mops
Tear-resistant sponge
Damage resistant sandwich core
Filling for highway joints
Gaskets
Pad under carpeting
Ankle wrap
Helmet liners 		Based on rib vibration

Sound absorbing layering
Tuned sound reflector

 
U. S. Patents [search negative Poisson's ratio, negative Poisson ratio, auxetic]  
8,034,103   Annuloplasty prosthesis with an auxetic structure
8,002,879   Uses of auxetic fibres
7,910,193   Three-dimensional auxetic structures and applications thereof
7,858,055   Moisture sensitive auxetic material
7,678,440   Deformable variable-stiffness cellular structures
7,626,122   Lightweight composite electrical wire
7,613,367   Optical sensor and modulator
7,598,652   Mechanical meta-materials
7,598,651   Mechanical meta-materials
7,583,010   Hybrid transducer
7,509,240   Solid freeform fabrication of structurally engineered multifunctional devices
7,509,183   Integrated global layout and local microstructure topology optimization approach for spinal cage design and fabrication
7,494,698   Polymers with high internal free volume
7,488,854   Diterpenoid compounds imparting stress resistance to plants
7,455,567   Garments having auxetic foam layers
7,446,130   Ionic colloidal crystals
7,425,357   Surface modification of expanded ultra high molecular weight polyethylene(eUHMWPE) for improved bondability
7,399,579   Fabrication of metallic microstructures via exposure of photosensitive composition
7,350,851   Reversibly expandable energy absorbing assembly and methods for operating the same
7,258,347   Discrete active seal assemblies
7,252,870   Nonwovens having reduced Poisson ratio
7,247,265   Auxetic filamentary materials
7,188,622   Filtering face mask that has a resilient seal surface in its exhalation valve
7,160,621   Energy absorbing articles
7,049,049   Maskless photolithography for using photoreactive agents
6,989,075   Tension activatable substrate
6,946,180   Composite materials with embedded machines
6,890,395   Medical device formed of ultrahigh molecular weight polyolefin
6,878,320   Auxetic materials
6,841,029   Surface modification of expanded ultra high molecular weight polyethylene (eUHMWPE) for improved bondability
6,837,890   Expanded UHMWPE for guiding catheter liners and other lubricious coatings
6,783,814   Polymers with high internal free volume
6,780,361   Process of making polymer articles
6,764,796   Maskless photolithography using plasma displays
6,743,388   Process of making polymer articles
6,706,165   Fabrication of metallic microstructures via exposure of photosensitive composition
6,602,224   Medical device formed of ultrahigh molecular weight polyolefin
6,544,698   Maskless 2-D and 3-D pattern generation photolithography
6,447,871   Composite materials with embedded machines
6,441,616   Active control of sound generation in MRI gradient coil structures
6,428,506   Medical device formed of ultrahigh molecular weight polyethylene
6,412,593   Cushioned earphones
6,372,932   Porous solid products of 1,3,5-benzenetricarboxylate and metal ions
6,235,377   Microporous membrane with a stratified pore structure created in situ and process
6,117,518   Particulate reinforcement for honeycomb core materials
5,916,671   Reusable resilient gasket and method of using same
5,571,592   Puffed insulative material
5,565,154   Methods for making puffed insulative material
5,497,540   Method for fabricating high density ultrasound array
5,474,824   Process for expanding polytetrafluoroethylene and products produced thereby
5,468,314   Process for making an electrical cable with expandable insulation
5,429,869   Composition of expanded polytetrafluoroethylene and similar polymers and method for producing same
5,334,903   Composite piezoelectrics utilizing a negative Poisson ratio polymer
5,284,435   Apparatus for manufacturing a disc-shaped information carrier
5,108,413   Dilator for opening the lumen of a tubular organ
5,098,755   Textured thermoplastic elastomeric film, articles comprising same, and method of making such textured thermoplastic elastomeric film and articles
5,035,713   Surgical implants incorporating re-entrant material
5,015,574   DNA sequence involved in gene expression and protein secretion, expression-secretion vector including the DNA sequence and the method of producing proteins by using the expression-secretion vector
4,668,557   Polyhedron cell structure and method of making same (Lakes)
Japan patents

Toyota Chuo Kenkyusho KK, Japanese patent no. 10134102, 1998
Toyota Jidosha KK, Japanese patent no. 9037578, 1997
Yamaha Corp, Japanese patent no. 8019634, 1996
Mitsubishi Jukogyo KK, Japanese patent no. 6137799, 1994