Patents by Inventor Lu-Zhuo Chen
Lu-Zhuo Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10038135Abstract: An electrostrictive composite includes a flexible polymer matrix and a carbon nanotube film structure. The carbon nanotube film structure is at least partially embedded into the flexible polymer matrix through a first surface. The carbon nanotube film structure includes a plurality of carbon nanotubes combined by van der Waals attractive force therebetween.Type: GrantFiled: April 14, 2016Date of Patent: July 31, 2018Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
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Publication number: 20160233415Abstract: An electrostrictive composite includes a flexible polymer matrix and a carbon nanotube film structure. The carbon nanotube film structure is at least partially embedded into the flexible polymer matrix through a first surface. The carbon nanotube film structure includes a plurality of carbon nanotubes combined by van der Waals attractive force therebetween.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Inventors: LU-ZHUO CHEN, CHANG-HONG LIU, JIA-PING WANG, SHOU-SHAN FAN
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Patent number: 9341166Abstract: An electrostrictive composite includes a flexible polymer matrix and a carbon nanotube film structure. The carbon nanotube film structure is at least partially embedded into the flexible polymer matrix through a first surface. The carbon nanotube film structure includes a plurality of carbon nanotubes combined by van der Waals attractive force therebetween.Type: GrantFiled: August 21, 2013Date of Patent: May 17, 2016Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
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Patent number: 9265653Abstract: A thermal therapy device includes a substrate and at least one heating unit arranged on the substrate. The at least one heating unit includes a heating element, a first electrode, and a second electrode. The heating element includes a carbon nanotube film structure and a polymer matrix. The carbon nanotube film structure is substantially parallel to and offset from a central plane of the polymer matrix. The first electrode and the second electrode are electrically connected to the carbon nanotube film structure, and control the amount of heat and deformation produced by the carbon nanotube film structure.Type: GrantFiled: May 17, 2011Date of Patent: February 23, 2016Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Shou-Shan Fan
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Patent number: 9054312Abstract: A method for making an electrostrictive composite includes the following steps. Carbon nanotubes and a first polymer precursor are mixed. The first carbon nanotubes and the polymer precursor are polymerized to obtain a first material layer. A second material layer is applied to the first material layer, wherein the thermal expansion coefficient of the first material layer is different from the thermal expansion coefficient of the second material layer.Type: GrantFiled: April 24, 2013Date of Patent: June 9, 2015Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Hong-Jiang Li, Shou-Shan Fan
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Patent number: 8916081Abstract: 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.Type: GrantFiled: August 22, 2013Date of Patent: December 23, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
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Patent number: 8853917Abstract: An carbon nanotube based electrostrictive element includes two electrostrictive layers spaced with each other, an electrical connector, and two electrodes. The two electrostrictive layers are electrically connected to each other at a first side, and spaced and insulated from each other at a second side via the electrical connector. The two electrodes are located at the second side and electrically connected respectively to the two electrostrictive layers.Type: GrantFiled: September 13, 2013Date of Patent: October 7, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chang-Hong Liu, Lu-Zhuo Chen, Shou-Shan Fan
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Publication number: 20140015372Abstract: An carbon nanotube based electrostrictive element includes two electrostrictive layers spaced with each other, an electrical connector, and two electrodes. The two electrostrictive layers are electrically connected to each other at a first side, and spaced and insulated from each other at a second side via the electrical connector. The two electrodes are located at the second side and electrically connected respectively to the two electrostrictive layers.Type: ApplicationFiled: September 13, 2013Publication date: January 16, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., Tsinghua UniversityInventors: CHANG-HONG LIU, LU-ZHUO CHEN, SHOU-SHAN FAN
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Publication number: 20130341829Abstract: 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.Type: ApplicationFiled: August 22, 2013Publication date: December 26, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: LU-ZHUO CHEN, CHANG-HONG LIU, JIA-PING WANG, SHOU-SHAN FAN
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Publication number: 20130333374Abstract: An electrostrictive composite includes a flexible polymer matrix and a carbon nanotube film structure. The carbon nanotube film structure is at least partially embedded into the flexible polymer matrix through a first surface. The carbon nanotube film structure includes a plurality of carbon nanotubes combined by van der Waals attractive force therebetween.Type: ApplicationFiled: August 21, 2013Publication date: December 19, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: LU-ZHUO CHEN, CHANG-HONG LIU, JIA-PING WANG, SHOU-SHAN FAN
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Patent number: 8593034Abstract: An electrostrictive composite includes two electrostrictive layers spaced with each other. The electrostrictive layers extend from a first side to a second side. The first side is spaced with and correspond to the second side. The electrostrictive layers are electrically connected with each other at the first side. The electrostrictive layers are insulated from each other at the second side.Type: GrantFiled: August 26, 2010Date of Patent: November 26, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Chang-Hong Liu, Lu-Zhuo Chen, Shou-Shan Fan
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Patent number: 8585109Abstract: A gripper includes a support and a plurality of gripping arms fixed on the support. One of the plurality of gripping arms includes a base and a carbon nanotube film structure to define a conductive circuit. The conductive circuit receives current to heat the base and the carbon nanotube film structure to actuate the gripper for gripping an object.Type: GrantFiled: January 7, 2011Date of Patent: November 19, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Shou-Shan Fan
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Patent number: 8545745Abstract: 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. When the Poisson's ratio material is stretched or compressed in a direction having an angle of about 45 degrees with the first direction, the Poisson's ratio value is positive.Type: GrantFiled: October 1, 2012Date of Patent: October 1, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
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Patent number: 8536767Abstract: An electrostrictive composite includes a flexible polymer matrix and a carbon nanotube film structure. The carbon nanotube film structure is located on a surface of the flexible polymer matrix, and at least partly embedded into the flexible polymer matrix through the first surface. The carbon nanotube film structure includes a plurality of carbon nanotubes combined by van der Waals attractive force therebetween.Type: GrantFiled: June 8, 2010Date of Patent: September 17, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Jia-Ping Wang, Shou-Shan Fan
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Patent number: 8533885Abstract: A cleaning device includes a support and a cleaning arm partly embedded in the support. The cleaning arm includes a flexible polymer matrix and a carbon nanotube film structure at least partly embedded into the flexible polymer matrix. The carbon nanotube film structure includes a number of carbon nanotubes combined by van der Waals attractive force therebetween.Type: GrantFiled: March 10, 2011Date of Patent: September 17, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Shou-Shan Fan
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Publication number: 20130233475Abstract: A method for making an electrostrictive composite includes the following steps. Carbon nanotubes and a first polymer precursor are mixed. The first carbon nanotubes and the polymer precursor are polymerized to obtain a first material layer. A second material layer is applied to the first material layer, wherein the thermal expansion coefficient of the first material layer is different from the thermal expansion coefficient of the second material layer.Type: ApplicationFiled: April 24, 2013Publication date: September 12, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: LU-ZHUO CHEN, CHANG-HONG LIU, HONG-JIANG LI, SHOU-SHAN FAN
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Patent number: 8450903Abstract: 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.Type: GrantFiled: July 6, 2009Date of Patent: May 28, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Hong-Jiang Li, Shou-Shan Fan
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Patent number: 8421315Abstract: An electrostrictive structure includes a flexible polymer matrix and a carbon nanotube film structure at least partly embedded into the flexible polymer matrix. The carbon nanotube film structure includes a number of carbon nanotubes combined by van der Waals attractive force therebetween. The carbon nanotube film structure extends in a curve in the flexible polymer matrix.Type: GrantFiled: October 19, 2010Date of Patent: April 16, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Lu-Zhuo Chen, Chang-Hong Liu, Shou-Shan Fan
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Publication number: 20130026410Abstract: An electrostrictive composite includes a flexible polymer matrix, a plurality of carbon nanotubes and a plurality of reinforcing particles dispersed in the flexible polymer matrix. The carbon nanotubes cooperatively form an electrically conductive network in the flexible polymer matrix.Type: ApplicationFiled: June 10, 2009Publication date: January 31, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: LU-ZHUO CHEN, CHANG-HONG LIU, SHOU-SHAN FAN
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Publication number: 20130026679Abstract: 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. When the Poisson's ratio material is stretched or compressed in a direction having an angle of about 45 degrees with the first direction, the Poisson's ratio value is positive.Type: ApplicationFiled: October 1, 2012Publication date: January 31, 2013Inventors: LU-ZHUO CHEN, CHANG-HONG LIU, JIA-PING WANG, SHOU-SHAN FAN