High-rectification near-field thermal diode using phase change periodic nanostructure

2016 ◽  
Vol 109 (12) ◽  
pp. 123106 ◽  
Author(s):  
Alok Ghanekar ◽  
Jun Ji ◽  
Yi Zheng
Keyword(s):  
Phase Change ◽  
Near Field ◽  
Periodic Nanostructure

scholarly journals Near-field thermal rectification devices using phase change periodic nanostructure

2018 ◽  
Vol 26 (2) ◽  
pp. A209 ◽  
Author(s):  
Alok Ghanekar ◽  
Yanpei Tian ◽  
Matthew Ricci ◽  
Sinong Zhang ◽  
Otto Gregory ◽  
...  
Keyword(s):  
Phase Change ◽  
Near Field ◽  
Thermal Rectification ◽  
Periodic Nanostructure

scholarly journals Controlling the near-field excitation of nano-antennas with phase-change materials

2013 ◽  
Vol 4 ◽  
pp. 632-637 ◽  
Author(s):  
Tsung Sheng Kao ◽  
Yi Guo Chen ◽  
Ming Hui Hong
Keyword(s):  
Thin Layer ◽  
Phase Change ◽  
Hot Spots ◽  
Phase Change Materials ◽  
Near Field ◽  
Plasmon Coupling ◽  
New Approach ◽  
Field Excitation ◽  
Bio Assay ◽  
Nano Antennas

By utilizing the strongly induced plasmon coupling between discrete nano-antennas and quantitatively controlling the crystalline proportions of an underlying Ge2Sb2Te5 (GST) phase-change thin layer, we show that nanoscale light localizations in the immediate proximity of plasmonic nano-antennas can be spatially positioned. Isolated energy hot-spots at a subwavelength scale can be created and adjusted across the landscape of the plasmonic system at a step resolution of λ/20. These findings introduce a new approach for nano-circuitry, bio-assay addressing and imaging applications.

Near-field phase-change optical recording over 1.2 numerical aperture

1999 ◽  
Author(s):  
Koichiro Kishima ◽  
Yuji Kuroda ◽  
Kimihiro Saito ◽  
Kiyoshi Osato ◽  
Kenji Yamamoto ◽  
...  
Keyword(s):  
Phase Change ◽  
Near Field ◽  
Numerical Aperture ◽  
Optical Recording ◽  
Field Phase

High-density near-field optical disc recording using phase change media and polycarbonate substrate

2004 ◽  
Author(s):  
Masataka Shinoda ◽  
Kimihiro Saito ◽  
Tsutomu Ishimoto ◽  
Takao Kondo ◽  
Ariyoshi Nakaoki ◽  
...  
Keyword(s):  
Phase Change ◽  
Near Field ◽  
High Density ◽  
Optical Disc ◽  
Polycarbonate Substrate

scholarly journals Optical Forces on an Oscillating Dipole Near VO2 Phase Transition

Universe ◽  
2021 ◽  
Vol 7 (6) ◽  
pp. 159
Author(s):  
Daniela Szilard ◽  
Patrícia P. Abrantes ◽  
Felipe A. Pinheiro ◽  
Felipe S. S. Rosa ◽  
Carlos Farina ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Thermal Hysteresis ◽  
Dipole Moments ◽  
Near Field ◽  
Optical Forces ◽  
Similar System ◽  
Magnetic Dipoles ◽  
Thermochromic Material ◽  
Control Light

We investigate optical forces on oscillating dipoles close to a phase change vanadium dioxide (VO2) film, which exhibits a metal-insulator transition around 340 K and low thermal hysteresis. This configuration emulates the interaction between an illuminated nanosphere and an interface and we employ a classical description to capture its important aspects. We consider both electric and magnetic dipoles for two different configurations, namely with the dipole moments parallel and perpendicular to the VO2 film. By using Bruggeman theory to describe the effective optical response of the material, we show that the thermal hysteresis present in the VO2 transition clearly shows up in the behavior of optical forces. In the near-field regime, the force on both dipoles can change from attractive to repulsive just by heating (or cooling) the film for a selected frequency range. We also verified that the optical forces are comparable to the Casimir-Polder force in a similar system, revealing the possibility of modulating or even changing the sign of the resultant force on an illuminated nano-object due to the presence of a thermochromic material. We hope that this work contributes to set the grounds for alternative approaches to control light-matter interactions using phase-change materials.

Direct near-field optical investigation of phase-change medium in blue-ray recordable and erasable disk

2009 ◽  
Vol 95 (10) ◽  
pp. 103105 ◽  
Author(s):  
Jen-You Chu ◽  
Shen-Chuan Lo ◽  
Shu-Chen Chen ◽  
You-Chia Chang ◽  
Juen-Kai Wang
Keyword(s):  
Phase Change ◽  
Near Field ◽  
Optical Investigation

Near-Field Phase Change Optical Recording Using a GaP Hemispherical Lens

2000 ◽  
Vol 39 (Part 1, No. 2B) ◽  
pp. 968-972 ◽  
Author(s):  
Kusato Hirota ◽  
Tom D. Milster ◽  
Kei Shimura ◽  
Yan Zhang ◽  
Joshua S. Jo
Keyword(s):  
Phase Change ◽  
Near Field ◽  
Optical Recording ◽  
Field Phase
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