Fabrication and characterization of a liquid-metal micro-droplet thermal switch

Author(s):  
A.O. Christensen ◽  
J.P. Jacob ◽  
C.D. Richards ◽  
D.F. Bahr ◽  
R.F. Richards
Author(s):  
A. O. Christensen ◽  
J. P. Jacob ◽  
C. D. Richards ◽  
D. F. Bahr ◽  
R. F. Richards

This paper presents the development of a liquid metal micro-droplet array for use as a thermal switch. A method of producing arrays of mercury micro-droplets on a silicon substrate, which is compatible with batch manufacturing, is detailed. A technique for examining the deformation of the micro-droplets under an applied load is offered. For 30μm diameter droplets under deformation, contact diameters ranging from 0–30μm, and forces of 0–0.10mN are examined. Predicted values of thermal contact resistance as a function of applied load to the switch are given, indicating that a thermal switch whose thermal resistance changes by a factor of ten could be fabricated.


Author(s):  
J. H. Cho ◽  
C. D. Richards ◽  
D. F. Bahr ◽  
R. F. Richards ◽  
J. Jiao

In this paper we present the design, fabrication, and characterization of a MEMS thermal switch. Three switch designs are considered: one in which the conductive material is in the form of liquid-metal micro droplets, one in which the conductive material consists of aligned carbon nanotube arrays, and one in which solid silicon contacts are used. The ratio of thermal resistance in the on and off conditions is used to characterize performance. Based on these measurements the switch incorporating liquid-metal droplets is superior to the other two switches. The liquid-metal switch has a thermal resistance off to on ratio of 168 and can provide heating rates of 905 °C/s.


2007 ◽  
Vol 133 (1) ◽  
pp. 55-63 ◽  
Author(s):  
J. Cho ◽  
T. Wiser ◽  
C. Richards ◽  
D. Bahr ◽  
R. Richards

2019 ◽  
Vol 35 (4) ◽  
pp. 475-484
Author(s):  
SHIVA ARUN ◽  
◽  
PRABHA BHARTIYA ◽  
AMREEN NAZ ◽  
SUDHEER RAI ◽  
...  

2019 ◽  
Vol 139 (11) ◽  
pp. 375-380
Author(s):  
Harutoshi Takahashi ◽  
Yuta Namba ◽  
Takashi Abe ◽  
Masayuki Sohgawa

2015 ◽  
Vol 135 (11) ◽  
pp. 474-475
Author(s):  
Koji Sugano ◽  
Ryoji Hiraoka ◽  
Toshiyuki Tsuchiya ◽  
Osamu Tabata

Sign in / Sign up

Export Citation Format

Share Document