PMID- 30424098 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 2072-666X (Print) IS - 2072-666X (Electronic) IS - 2072-666X (Linking) VI - 9 IP - 4 DP - 2018 Apr 2 TI - PDMS-PDMS Micro Channels Filled with Phase-Change Material for Chip Cooling. LID - 10.3390/mi9040165 [doi] LID - 165 AB - This paper reports on a chip cooling solution using polydimethylsiloxane (PDMS) based microfluidic devices filled with n-Octadecane. A thick SU-8 layer of 150 microm is used as the master mold for patterning PDMS fabrication. With the SU-8 mold, patterns with straight lines at microscale have been fabricated with standard micro-electro-mechanical system (MEMS) technology. Thermal polymer bonding technique is used to bond the PDMS pattern directly to a flat polydimethylsiloxane (PDMS) film which results in the sealed microchannels. n-Octadecane as a phase-change material has been successfully filled in the microchannels using a dispensing machine. Infrared thermal image shows a sharp contrast of the temperature distribution between the chip with n-Octadecane and the empty chip during the same heating process. This result indicates an efficient cooling performance of the microchannel device with phase-change material. A thermal stimulation test demonstrates that a 16 degrees C-lower temperature difference can be achieved. This microchannel device, benefited from the flexibility of PDMS substrate, shows specific advantages in meeting the need for the heat dissipation of flexible electronics such as flexible displays, electronic skins, and wearable electronics. Latent heat of the phase-change material can keep the temperature of devices relatively lower over a period of time, which shows potential application values on discontinuously active flexible electronic devices. FAU - Liu, Zong AU - Liu Z AD - Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China. victorliu612@gmail.com. FAU - Qin, Siyin AU - Qin S AUID- ORCID: 0000-0002-5376-1781 AD - Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China. syqin@email.szu.edu.cn. FAU - Chen, Xingwei AU - Chen X AD - Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China. chenxw@mail.sustc.edu.cn. FAU - Chen, Dazhu AU - Chen D AD - Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China. dzchen@szu.edu.cn. FAU - Wang, Fei AU - Wang F AD - Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China. wangf@sustc.edu.cn. AD - State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. wangf@sustc.edu.cn. LA - eng GR - 51505209/National Natural Science Foundation of China/ GR - JCYJ20170412154426330 and KQTD2015071710313656/Shenzhen Science and Technology Innovation Committee/ GR - 2015A030313812 and 2016A030306042/Guangdong Natural Science Funds/ GR - 2014A030313561/Guangdong Natural Science Funds/ PT - Journal Article DEP - 20180402 PL - Switzerland TA - Micromachines (Basel) JT - Micromachines JID - 101640903 PMC - PMC6187480 OTO - NOTNLM OT - MEMS OT - chip cooling OT - flexible electronics OT - micro-channel device OT - phase-change material OT - polymer OT - thermal management COIS- The authors declare no conflict of interest. EDAT- 2018/11/15 06:00 MHDA- 2018/11/15 06:01 PMCR- 2018/04/02 CRDT- 2018/11/15 06:00 PHST- 2018/02/24 00:00 [received] PHST- 2018/03/30 00:00 [revised] PHST- 2018/04/01 00:00 [accepted] PHST- 2018/11/15 06:00 [entrez] PHST- 2018/11/15 06:00 [pubmed] PHST- 2018/11/15 06:01 [medline] PHST- 2018/04/02 00:00 [pmc-release] AID - mi9040165 [pii] AID - micromachines-09-00165 [pii] AID - 10.3390/mi9040165 [doi] PST - epublish SO - Micromachines (Basel). 2018 Apr 2;9(4):165. doi: 10.3390/mi9040165.