Local control of emission energy of semiconductor quantum dots using volume expansion of a phase-change material

2013 ◽  
Vol 102 (9) ◽  
pp. 093120 ◽  
Author(s):  
Motoki Takahashi ◽  
Nurrul Syafawati Humam ◽  
Nobuhiro Tsumori ◽  
Toshiharu Saiki ◽  
Philippe Regreny ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Phase Change ◽  
Phase Change Material ◽  
Local Control ◽  
Volume Expansion ◽  
Semiconductor Quantum Dots ◽  
Emission Energy ◽  
Change Material

scholarly journals Near-infrared nano-spectroscopy and emission energy control of semiconductor quantum dots using a phase-change material

2013 ◽  
Vol 471 ◽  
pp. 012007 ◽  
Author(s):  
Nobuhiro Tsumori ◽  
Motoki Takahashi ◽  
Nurrul Syafawati Humam ◽  
Phillipe Regreny ◽  
Michel Gendry ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Phase Change ◽  
Phase Change Material ◽  
Near Infrared ◽  
Semiconductor Quantum Dots ◽  
Energy Control ◽  
Emission Energy ◽  
Change Material

Thermal Driving Method and Displacement Properties of a Thin-Film Polyimide Diaphragm for a MEMS Actuator

2012 ◽  
Vol 523-524 ◽  
pp. 563-568
Author(s):  
Shinichiro Mifuji ◽  
Koji Adachi ◽  
Tatsunori Tsukioka ◽  
Satomitsu Imai
Keyword(s):  
Thin Film ◽  
Elastic Modulus ◽  
Phase Change ◽  
Phase Change Material ◽  
Spin Coating ◽  
Volume Expansion ◽  
Mechanical Characteristics ◽  
Low Elastic Modulus ◽  
Heat Expansion ◽  
Change Material

A thin-film polyimide diaphragm for a MEMS actuator was fabricated and its process and mechanical characteristics were investigated. Owing to its low elastic modulus and the thin-film process, a thin-film polyimide diaphragm has a merit in terms of producing a large displacement. Given that merit, spin coating was used for forming a thin film of polyamide, and deep-RIE (Bosch process) was used for fabricating the diaphragm section of the actuator. Thin-film polyimide diaphragms with micrometer-order thickness were fabricated. To drive the diaphragm as an actuator, the following two methods were applied: heat expansion by applying an electric current and volume expansion of a gas-liquid phase-change material confined in a cavity between polyimide diaphragms. As for the former method, an aluminum thin film is deposited on the diaphragm. As for the latter, paraffin (vaporized by heating) is used as the phase-change material. Displacement characteristics for each method were revealed by the experiments. In the case of both methods, displacements of tens of micrometers were outputted. Experiments of driving actuator confirmed that the proposed systems work as actuators. The actuators developed in this research are applicable to micro-pumps for medical and other uses.

scholarly journals Redshifted and blueshifted photoluminescence emission of InAs/InP quantum dots upon amorphization of phase change material

2014 ◽  
Vol 22 (12) ◽  
pp. 14830 ◽  
Author(s):  
Nurrul Syafawati Binti Humam ◽  
Yu Sato ◽  
Motoki Takahashi ◽  
Shohei Kanazawa ◽  
Nobuhiro Tsumori ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Phase Change ◽  
Phase Change Material ◽  
Photoluminescence Emission ◽  
Change Material ◽  
Inp Quantum Dots

NUMERICAL STUDY OF A SOLAR GREENHOUSE DRYER WITH A PHASE-CHANGE MATERIAL AS AN ENERGY STORAGE MEDIUM

2018 ◽  
Vol 49 (6) ◽  
pp. 509-528 ◽  
Author(s):  
Orawan Aumporn ◽  
Belkacem Zeghmati ◽  
Xavier Chesneau ◽  
Serm Janjai
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Numerical Study ◽  
Storage Medium ◽  
Solar Greenhouse ◽  
Change Material

CONTROL OF HEAT RELEASE ENERGY DURING HEATING FROM SOLID-SOLID PHASE CHANGE MATERIAL

2018 ◽  
Author(s):  
Ryohei Gotoh ◽  
Tsuyoshi Totani ◽  
Masashi Wakita ◽  
Harunori Nagata
Keyword(s):  
Phase Change ◽  
Heat Release ◽  
Phase Change Material ◽  
Solid Phase ◽  
Change Material
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