摘要:
The present disclosure relates to a pressure control switch. The pressure control switch includes a bistable resistance element. The bistable resistance element includes an organic, soft, low-conductivity matrix, and a plurality of high conductivity particles dispersed in the matrix. The bistable resistance element switches from a low resistance state to a high resistance state by receiving a pressure change applied to the bistable resistance element. The present disclosure also relates to a method for using the pressure control switch and an alarm system.
摘要:
A thermal conductivity measurement apparatus for measuring a thermal conductivity of a one-dimensional material includes a substrate, a vacuum chamber receiving the substrate and four spaced electrodes. The one-dimensional material spans across the four spaced electrodes. A middle part of the one-dimensional material, located between the second and third electrodes, is suspended. The present disclosure further provides a method for measuring the thermal conductivity of the one-dimensional material.
摘要:
A membrane includes a fiber material (e.g., in fabric form) and an agar material distributed so as to surround the fiber material. Another membrane includes an agar material and a fiber material (e.g., non-woven fibers) dispersed in the agar. Moreover, a method for making the membrane includes the steps of: (a) mixing the agar material with water to form a slurry of agar; (b) immerging a fiber material into the slurry of agar to form a pre-composite; (c) molding the pre-composite to form a composite and solidifying the composite to obtain the membrane.
摘要:
A carbon nanotube composite material (10) includes a matrix material (12) having two opposite surfaces (102) and (104), a number of CNTs (14) each having two opposite end portions (112) and (114) embedded in the matrix material. The two opposite end portions of each CNT extend to and, potentially, out of the respective two opposite surfaces of the matrix material. A method for manufacturing the carbon nanotube composite material includes the steps of: providing a substrate and forming a carbon nanotube array in a selective pattern thereon; providing a pair of protective layers, a respective protective layer being attached on a corresponding portion of ends of CNTs; filling clearances existing among CNTs and between the two protective layers with a matrix material; and removing the protective layers from CNTs.
摘要:
An apparatus for manufacturing a large-area carbon nanotube film includes a reactor chamber, a helical-shaped substrate, and a supporter. The reactor chamber includes an inlet and an outlet. The inlet and the outlet are aligned on an axis of the reactor chamber. The helical-shaped substrate and the supporter are located wholly inside the reactor chamber. The supporter is moveable along the axis of the reactor chamber, and the helical-shaped substrate is supported by the supporter.
摘要:
A strain measurement device includes a strain gauge, a holding device, a transverse strain recorder, and a data processing device. The strain gauge includes at least one first and at least one second layers of carbon nanotube films, each layer of carbon nanotube films having a plurality of carbon nanotubes. The carbon nanotubes in at least one first layer of carbon nanotube film align along a first direction. The carbon nanotubes in at least one second layer of carbon nanotube film align along a second direction. The holding device is used to fasten a specimen and the strain gauge. The transverse strain recorder is used to record a transverse strain of the strain gauge. The data processing device is used to calculate an axial strain of the strain gauge.
摘要:
An electrostrictive composite includes a first material layer and a second material layer. The first material layer and the second material layer are stacked to each other. The thermal expansion coefficients of the first material layer and the second material layer are different. The first material layer includes a polymer matrix and a plurality of carbon nanotubes dispersed therein. Also an electrothermic type actuator using the electrostrictive composite is provided.
摘要:
A CNT composite (10) includes a matrix (14) and a number of CNTs (12) embedded in the matrix. The matrix has a surface (102) and an opposite surface (104). Head portions of the respective CNTs are consistently oriented, parallel to the surfaces of the matrix. A method for manufacturing the composite includes (a) providing a substrate and depositing a catalyst film on the substrate; (b) forming the array of CNTs via the catalyst film on the substrate; (c) immersing the CNTs in a liquid matrix material, infusing the liquid matrix material into the array of CNTs; (d) taking the carbon nanotubes with the infused matrix out of the liquid matrix; (e) pressing the still-soft matrix and the CNTs therein, in order to arrange the CNTs consistently and parallel to the surfaces of the matrix; and (f) solidifying and peeling away the matrix to produce the CNT composite.
摘要:
An apparatus for manufacturing a large-area carbon nanotube film is provided. The apparatus includes a reactor chamber, a substrate having a curved, three-dimensional surface and a supporter received in the reactor chamber. The curved, three-dimensional curve surface of the substrate is provided for growing the carbon nanotube film thereon. The supporter is provided for fixing the substrate in the reactor chamber. The present invention also provides a method for manufacturing a large-area carbon nanotube film employing this apparatus.
摘要:
A heat-dissipation structure includes a first carbon nanotube layer and a metal mesh layer. The first carbon nanotube layer and the metal mesh layer are stacked on each other. The first carbon nanotube layer includes at least one first carbon nanotube paper. An electronic device applying the heat-dissipation structure is also disclosed.