scholarly journals Colossal variations in the thermopower and n–p conductivity switching in topological tellurides under pressure

2020 ◽  
Vol 128 (24) ◽  
pp. 245902
Author(s):  
Natalia V. Morozova ◽  
Igor V. Korobeinikov ◽  
Kirill V. Kurochka ◽  
Sergey V. Ovsyannikov
Keyword(s):  
Conductivity Switching

scholarly journals Above-room-temperature giant thermal conductivity switching in spintronic multilayers

2021 ◽  
Vol 118 (4) ◽  
pp. 042409
Author(s):  
Hiroyasu Nakayama ◽  
Bin Xu ◽  
Sotaro Iwamoto ◽  
Kaoru Yamamoto ◽  
Ryo Iguchi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Room Temperature ◽  
Conductivity Switching

Molecular conductivity switching of two benzene rings under electric field

2010 ◽  
Vol 97 (26) ◽  
pp. 262114 ◽  
Author(s):  
M. G. Vergniory ◽  
J. M. Granadino-Roldan ◽  
A. Garcia-Lekue ◽  
Lin-Wang Wang
Keyword(s):  
Electric Field ◽  
Benzene Rings ◽  
Conductivity Switching ◽  
Molecular Conductivity

scholarly journals Effect of the Thickness of Insulator Polymeric Films on the Memory Behavior: The Case of the Polymethylmethacrylate and the Polystyrene

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
J. A. Avila-Niño ◽  
A. O. Sustaita ◽  
M. Reyes-Reyes ◽  
R. López-Sandoval
Keyword(s):  
Film Thickness ◽  
Differential Resistance ◽  
Polymeric Films ◽  
Thickness Variation ◽  
Pmma Film ◽  
Organic Layer ◽  
Organic Film ◽  
Aluminum Particles ◽  
Conductivity Switching ◽  
Type Of Behavior

The effect of thickness variation on the memory behavior of the polymethylmethacrylate-(PMMA)-based devices has been investigated. The PMMA film thicknesses have been varied between 5 to 300 nm, and we have found that the film thickness determines the type of behavior: ohmic, write-once-read-many-times (WORM) memory with two ON states, WORM memory with a negative differential resistance (NDR) region, and WORM memory without NDR region. The fact that similar results were obtained using different solvents to dilute PMMA (chlorobenzene, chloroform, and dimethyl sulfoxide), as well as using an other insulating polymer such as polystyrene (PS), leads to the conclusion that the phenomenon of memory depends on the aluminum electrodes, organic film thickness, and the compliance current used during the electroformation whereas the type of organic layer (PMMA or PS) has minor influence. From here, we conclude that the conductivity switching of the insulator organic film is due to the injection of aluminum particles into the film during the first voltage cycle.

Evidence of the pressure-induced conductivity switching of yttrium-doped SrTiO3

2016 ◽  
Vol 28 (47) ◽  
pp. 475501 ◽  
Author(s):  
LiDong Dai ◽  
Lei Wu ◽  
HePing Li ◽  
HaiYing Hu ◽  
YuKai Zhuang ◽  
...  
Keyword(s):  
Conductivity Switching

Conductivity switching and memory effect in polymer brushes with carbazole pendant moieties

2012 ◽  
Vol 162 (13-14) ◽  
pp. 1059-1064 ◽  
Author(s):  
Yang Liu ◽  
Shujun Lv ◽  
Liang Li ◽  
Songmin Shang
Keyword(s):  
Memory Effect ◽  
Polymer Brushes ◽  
Conductivity Switching

Memory conductivity switching in As16Te83Ge thin films

1976 ◽  
Vol 36 (2) ◽  
pp. 475-478 ◽  
Author(s):  
M. Peršin ◽  
D. Kunstelj ◽  
A. Peršin ◽  
H. Zorc
Keyword(s):  
Thin Films ◽  
Conductivity Switching

scholarly journals Light-triggered thermal conductivity switching in azobenzene polymers

2019 ◽  
Vol 116 (13) ◽  
pp. 5973-5978 ◽  
Author(s):  
Jungwoo Shin ◽  
Jaeuk Sung ◽  
Minjee Kang ◽  
Xu Xie ◽  
Byeongdu Lee ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Conformational Transition ◽  
Green Light ◽  
Effective Control ◽  
Light Illumination ◽  
X Ray Scattering ◽  
Azobenzene Polymer ◽  
Liquid Transition ◽  
Conductivity Switching

Materials that can be switched between low and high thermal conductivity states would advance the control and conversion of thermal energy. Employing in situ time-domain thermoreflectance (TDTR) and in situ synchrotron X-ray scattering, we report a reversible, light-responsive azobenzene polymer that switches between high (0.35 W m−1K−1) and low thermal conductivity (0.10 W m−1K−1) states. This threefold change in the thermal conductivity is achieved by modulation of chain alignment resulted from the conformational transition between planar (trans) and nonplanar (cis) azobenzene groups under UV and green light illumination. This conformational transition leads to changes in the π-π stacking geometry and drives the crystal-to-liquid transition, which is fully reversible and occurs on a time scale of tens of seconds at room temperature. This result demonstrates an effective control of the thermophysical properties of polymers by modulating interchain π-π networks by light.

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