scholarly journals Local Heat Energy Transport Analyses in Gallium-Indium-Nitride/Gallium Nitride Heterostructure by Microscopic Raman Imaging Exploiting Simultaneous Irradiation of Two Laser Beams

2020 ◽  
Author(s):  
Shungo Okamoto ◽  
Naomichi Saito ◽  
Kotaro Ito ◽  
Bei Ma ◽  
Ken Morita ◽  
...  
Keyword(s):  
Heat Generation ◽  
Energy Transport ◽  
Indium Nitride ◽  
Local Heat ◽  
Heat Energy ◽  
Raman Imaging ◽  
Gallium Indium Nitride ◽  
Simultaneous Irradiation ◽  
Different Characteristics ◽  
532 Nm

Abstract Local heat transport in two GaxIn1-xN/GaN-heterostructures on sapphire substrates is investigated by microscopic Raman imaging using two lasers of 532 nm (Raman observation) and 325 nm (heat generation and Raman observation), which enables the separation of heat generation and Raman observation positions. It is found that E2(high) and A1(LO) modes of the Ga0.84In0.16N layer exhibit mutually different characteristics, which indicates the analysis of the occupation of the A1(LO) mode is available. E2(high) mode of the GaN layer observed by the 532-nm laser reveals that the transport of the heat energy generated in the Ga0.84In0.16N layer to the GaN under layer is blocked in the high-density area of misfit dislocation in the vicinity of the heterointerface.

Cascade targeting tumor mitochondria with CuS nanoparticles for enhanced photothermal therapy in the second near-infrared window

2021 ◽  
Author(s):  
Haiyan Wu ◽  
Pengpeng Jia ◽  
Yu Zou ◽  
Jiang Jiang
Keyword(s):  
Treatment Outcome ◽  
Heat Generation ◽  
Side Effect ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Local Heat ◽  
Potential Side Effect ◽  
Improve Treatment ◽  
Improve Treatment Outcome ◽  
Local Heat Generation

Photothermal therapy, assisted by local heat generation using photothermal nanoparticles (NPs), is an emerging strategy to treat tumors noninvasively. To improve treatment outcome and to alleviate potential side effect on...

Gallium Indium Nitride-Based Green Lasers

2012 ◽  
Vol 30 (5) ◽  
pp. 679-699 ◽  
Author(s):  
Dmitry Sizov ◽  
Rajaram Bhat ◽  
Chung-En Zah
Keyword(s):  
Indium Nitride ◽  
Gallium Indium Nitride

scholarly journals Dual Negative Differential of Heat Generation in a Strongly Correlated Quantum Dot Side-Coupled to Majorana Bound States

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhu-Hua Wang ◽  
Wen-Cheng Huang
Keyword(s):  
Quantum Dot ◽  
Heat Generation ◽  
Coulomb Blockade ◽  
Bound States ◽  
Interaction Strength ◽  
Local Heat ◽  
Transport Processes ◽  
Strongly Correlated ◽  
Majorana Bound States ◽  
Coulomb Blockade Regime

We study theoretically the properties of local heat originated from energy exchange between electrons passing through a quantum dot (QD) coupled to a phonon bath. The dot is sandwiched between two normal metal leads and also side-coupled to Majorana bound states (MBSs) formed at opposite ends of a topological superconductor nanowire. We find that in addition to the negative differential of heat generation (NDHG) in the Coulomb blockade regime, another NDHG emerges near the leads’ Fermi level due to the dot-MBS coupling. This dual NDHG effect is robust against the variation of intradot Coulomb interaction strength, and disappears if the QD is coupled to regular Fermions. Direct hybridization between the MBSs reduces their impacts on the electronic transport processes, and eliminates the dual NDHG effect. Our results show that the dual NDHG effect is quite efficient for inferring the existence of MBSs, and may remedy some limitations of the detection schemes relying on tunneling spectroscopy technique.

scholarly journals A simulation of Gallium Indium Nitride Based Solar Cells

2020 ◽  
Author(s):  
Jin Wu
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Absorption Coefficient ◽  
Indium Nitride ◽  
Solar Spectrum ◽  
Thin Layers ◽  
Gallium Indium Nitride ◽  
Optimal Values ◽  
High Absorption Coefficient ◽  
High Absorption

InGaN can reach all values of bandgap from 3.42 to 0.7eV, which covers almost the entire solar spectrum. This study is to understand the influence of each parameter of the solar cell for an improved optimization of performance. The yield obtained for a reference cell is 12.2 % for optimal values of doping of the layers. For generation and recombination, performance of the cell varies with these settings. III nitrides have a high absorption coefficient, a very thin layers of material are sufficient to absorb most of the light.

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