Method for using a poisson ratio material
AssigneesTsinghua University, Hon Hai Precision Industry Co., Ltd.
InventorsLu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
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Abstract
A method for using a Poisson's ratio material includes a carbon nanotube film structure is provided. The carbon nanotube film structure includes a plurality of carbon nanotubes. A first part of the carbon nanotubes are aligned a first direction, a second part of the carbon nanotubes are aligned a second direction. The first direction is substantially perpendicular to second direction. When the Poisson's ratio material is stretched or compressed substantially along the first or second direction, a Poisson's ratio value is negative.
Claims15
A method for using a Poisson's ratio material, comprising:
- providing the Poisson's ratio material, wherein the Poisson's ratio material comprises:
- a flexible polymer matrix;
- and
- a carbon nanotube film structure disposed in the flexible polymer matrix, comprising at least two layers of carbon nanotube films, each carbon nanotube film having a plurality of carbon nanotubes, the carbon nanotubes in at least one of the at least two layers of carbon nanotube films aligned along a first direction, and the carbon nanotubes of at least one of the at least two layers carbon nanotube films aligned along a second direction, wherein the first direction is substantially perpendicular to the second direction;
- and
- stretching or compressing the Poisson's ratio material along the first direction or the second direction.
A method for using a Poisson's ratio material, comprising:
- providing the Poisson's ratio material, wherein the Poisson's ratio material comprises:
- a flexible polymer matrix;
- and
- a carbon nanotube film structure disposed in the flexible polymer matrix, the carbon nanotube film structure comprising a plurality of carbon nanotubes, wherein a first part of the carbon nanotubes is aligned along a first direction, a second part of the carbon nanotubes is aligned along a second direction, and the first direction is substantially perpendicular to the second direction;
- and
- stretching or compressing the Poisson's ratio material along the first direction or the second direction.
A method for using a Poisson's ratio material, comprising:
- providing the Poisson's ratio material, wherein the Poisson's ratio material comprises:
- a first characteristic direction;
- a second characteristic direction that is substantially perpendicular to the first characteristic direction;
- a third characteristic direction having an angle of about 45 degrees in relation to the first characteristic direction;
- a plurality of first films formed from a plurality of first carbon nanotubes aligned in the first characteristic direction;
- a plurality of second films formed from a plurality of second carbon nanotubes aligned in the second characteristic direction;
- a polydimethylsiloxane matrix, wherein the pluralities of first films and second films are disposed in the polydimethylsiloxane matrix;
- wherein the plurality of first films and the plurality of second films are alternately arranged and stacked on one another and the plurality of first carbon nanotubes in the plurality of first films are substantially perpendicular to the carbon nanotubes in the second films;
- and
- stretching or compressing the Poisson's ratio material in a direction parallel to the first characteristic direction or the second characteristic direction.
Dependencies are inferred from the claim text.