公开(公告)号：US11703257B2

公开(公告)日：2023-07-18

申请号：US17036018

申请日：2020-09-29

申请人： Board of Regents, The University of Texas System

发明人： Zunfeng Liu ,  Run Wang ,  Jiuke Mu ,  Zhong Wang ,  Shaoli Fang ,  Marcio Dias Lima ,  Ali E. Aliev ,  Na Li ,  Carter S. Haines ,  Ray H. Baughman

IPC分类号： F25B23/00 ,  D02G3/44 ,  F03G7/06 ,  H02N10/00

CPC分类号： F25B23/00 ,  D02G3/44 ,  D10B2401/06 ,  F03G7/0612 ,  F03G7/0615 ,  F03G7/06113 ,  H02N10/00 ,  Y10T428/2925

摘要： Cooling by a twist-untwist process, by a stretch-release process for twisted, coiled, or supercoiled yarns or fibers, and methods and systems thereof. High mechanocaloric cooling results from release of inserted twist or from stretch release for twisted, coiled, or supercoiled fibers, including natural rubber fibers, NiTi wires, and polyethylene fishing line. Twist utilization can increase cooling and cooling efficiencies. A cooler using twist insertion and release can be shorter and smaller in volume than a cooler that requires a large elastomeric elongation. The cooler system can be utilized in mechanochromic textiles and remotely readable tensile and torsional sensors.

公开(公告)号：US20210116152A1

公开(公告)日：2021-04-22

申请号：US17036018

申请日：2020-09-29

申请人： Board of Regents, The University of Texas System

发明人： Zunfeng Liu ,  Run Wang ,  Jiuke Mu ,  Zhong Wang ,  Shaoli Fang ,  Marcio Dias Lima ,  Ali E. Aliev ,  Na Li ,  Carter S. Haines ,  Ray H. Baughman

IPC分类号： F25B23/00

摘要： Cooling by a twist-untwist process, by a stretch-release process for twisted, coiled, or supercoiled yarns or fibers, and methods and systems thereof. High mechanocaloric cooling results from release of inserted twist or from stretch release for twisted, coiled, or supercoiled fibers, including natural rubber fibers, NiTi wires, and polyethylene fishing line. Twist utilization can increase cooling and cooling efficiencies. A cooler using twist insertion and release can be shorter and smaller in volume than a cooler that requires a large elastomeric elongation. The cooler system can be utilized in mechanochromic textiles and remotely readable tensile and torsional sensors.

公开(公告)号：US20230141697A1

公开(公告)日：2023-05-11

申请号：US17380746

申请日：2020-02-03

申请人： BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

发明人： Hetao Chu ,  Jinsong Leng ,  Ray H. Baughman ,  Xinghao Hu ,  Na Li ,  Carter S. Haines ,  Shaoli Fang ,  Zhong Wang ,  Mu Jiuke

IPC分类号： F03G7/00 ,  D02G3/44 ,  D02G3/16 ,  D02G3/26

CPC分类号： F03G7/025 ,  F03G7/012 ,  F03G7/029 ,  D02G3/441 ,  D02G3/16 ,  D02G3/26 ,  D10B2101/122 ,  D10B2401/16

摘要： Previous electrochemically-powered yarn muscles cannot be usefully operated between extreme negative and extreme positive potentials, since strokes during electron injection and during hole injection partially cancel because they are in the same direction. Unipolar-stroke carbon nanotube yarn muscles are described in which muscle strokes are additive between extreme negative and extreme positive potentials, and stroke increases with potential scan rate. These electrochemical artificial muscles include an electrically conducting twisted or coiled yarn and a material that dramatically shifts the potential of zero charge of the electrochemically actuated yarn.