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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Torsional refrigeration by twisted, coiled, and supercoiled fibers

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Author(s):
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Wang, Run [1] ; Fang, Shaoli [2] ; Xiao, Yicheng [1] ; Gao, Enlai [2, 3] ; Jiang, Nan [2, 4] ; Li, Yaowang [5] ; Mou, Linlin [1] ; Shen, Yanan [1] ; Zhao, Wubin [1] ; Li, Sitong [1] ; Fonseca, Alexandre F. [6] ; Galvao, Douglas S. [6] ; Chen, Mengmeng [1] ; He, Wenqian [1] ; Yu, Kaiqing [1] ; Lu, Hongbing [7] ; Wang, Xuemin [7, 8] ; Qian, Dong [7] ; Aliev, Ali E. [2] ; Li, Na [2, 9] ; Haines, Carter S. [2] ; Liu, Zhongsheng [1] ; Mu, Jiuke [2] ; Wang, Zhong [2] ; Yin, Shougen [10] ; Lima, Marcio D. [11] ; An, Baigang [12] ; Zhou, Xiang [13] ; Liu, Zunfeng [1] ; Baughman, Ray H. [2]
Total Authors: 30
Affiliation:
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[1] Nankai Univ, Coll Pharm, State Key Lab Med Chem Biol, Key Lab Funct Polymer Mat, Tianjin 300071 - Peoples R China
[2] Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75080 - USA
[3] Wuhan Univ, Sch Civil Engn, Dept Engn Mech, Wuhan 430072, Hubei - Peoples R China
[4] Tsinghua Shenzhen Int Grad Sch, Shenzhen Geim Graphene Ctr, Shenzhen 518055 - Peoples R China
[5] Tsinghua Univ, Sch Life Sci, Beijing 100084 - Peoples R China
[6] Univ Estadual Campinas, Appl Phys Dept, BR-3081970 Campinas, SP - Brazil
[7] Univ Texas Dallas, Dept Mech Engn, Richardson, TX 75080 - USA
[8] Georgia Southern Univ, Dept Mech Engn, Statesboro, GA 30458 - USA
[9] MilliporeSigma, Mat Sci, Milwaukee, WI 53209 - USA
[10] Tianjin Univ Technol, Inst Mat Phys, Tianjin 300384 - Peoples R China
[11] Lintec Amer, Nanosci & Technol Ctr, Richardson, TX 75081 - USA
[12] Univ Sci & Technol Liaoning, Sch Chem Engn, Anshan 114051, Liaoning - Peoples R China
[13] China Pharmaceut Univ, Dept Sci, Nanjing 211198, Jiangsu - Peoples R China
Total Affiliations: 13
Document type: Journal article
Source: Science; v. 366, n. 6462, p. 216+, OCT 11 2019.
Web of Science Citations: 2
Abstract

Higher-efficiency, lower-cost refrigeration is needed for both large- and small-scale cooling. Refrigerators using entropy changes during cycles of stretching or hydrostatic compression of a solid are possible alternatives to the vapor-compression fridges found in homes. We show that high cooling results from twist changes for twisted, coiled, or supercoiled fibers, including those of natural rubber, nickel titanium, and polyethylene fishing line. Using opposite chiralities of twist and coiling produces supercoiled natural rubber fibers and coiled fishing line fibers that cool when stretched. A demonstrated twist-based device for cooling flowing water provides high cooling energy and device efficiency. Mechanical calculations describe the axial and spring-index dependencies of twist-enhanced cooling and its origin in a phase transformation for polyethylene fibers. (AU)

FAPESP's process: 18/02992-4 - Carbon Nanostructures: Modeling and Simulations
Grantee:Alexandre Fontes da Fonseca
Support type: Regular Research Grants
FAPESP's process: 13/08293-7 - CCES - Center for Computational Engineering and Sciences
Grantee:Munir Salomao Skaf
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC