Micro-heat sink based on silicon nanowires formed by metal-assisted chemical etching for heat dissipation enhancement to improve performance of micro-thermoelectric generator

Toàn, Nguyễn Văn; Ito, Keisuke; Tuoi, Truong Thi Kim; Toda, Masaya; Chen, Po-Hung; Sabri, Mohd Faizul Mohd; Li, Jinhua; Ono, Takahito

doi:10.1016/j.enconman.2022.115923

Cited by 10 publications

(5 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The micro sized heat sink based on silicon nanowires enhances heat dissipation by increasing surface to volume ration of the utilize of micro sized thermoelectric generator is significantly improved. It is very difficult to fabricate for real time applications [3]. Increased heat transfer results in increased output power optimum mass flow rate of maximum temperature difference and output power [2].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Thermal resistance is a term used to describe heat sinks [2]. Wind tunnel tests measure thermal resistance and system impedance [3]:…”

Section: Thermoelectric Modules Designmentioning

confidence: 99%

“…The fin spacing should be determined based on flow impedance [3], with few fins having a low object, a lowpressure drop, and many fins having a high object highpressure drop. There is an optimal number of fins for a particular flow condition and fin spacing estimation.…”

Section: P Pi Pomentioning

confidence: 99%

“…This makes sure the certain air passes across the channels created at the heatsink Fins [2]. When airflow was not ducted, some airflow passed through the heatsink [11] The flow bypass increased as the fin density and clearance increased but was unaffected by the inlet duct [3].…”

Section: Heat Transfer Theoretical Modelmentioning

confidence: 99%

See 3 more Smart Citations

Optimization of Heat Sink Geometry for Improved Thermoelectric Generator Efficiency

Babu,

Kumar

2024

IJHT

View full text Add to dashboard Cite

This paper focuses on modelling of Heat sink for thermoelectric Generator which requires a heat sink to achieve high electrical output efficiency. Thermoelectricity refers to a phenomenon in which a temperature gradient causes a flux of the electric charge. This work deals with models of different geometries, based on heatsinks designed to improve thermoelectric generator performance. The thermo-electric generator efficiency increased with the temperature gradient ΔT with the cooling junction. Here comparing of the conventional and analytical heat sinks, from analytical heat sinks, we can choose the beat efficient heat sink for thermoelectric generator high performance. The heat sink, whose device is to be improved by the geometry of the Heat sink models designed with different shapes of Fins, provides this cooling junction. After analyzing the various heat sink models, with different geometrical Heat sink fins, cylindrical-shaped fins's-height at 10 mm temperature cooled to 6.7℃ and pressure loss to 1.8Pa from high temperature were found to be most effective for thermoelectric generator efficiency. The improvement in temperature and pressure loss was achieved using the optimized cylindrical heat sink with 10mm fins height design.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

“…Thermal resistance is a term used to describe heat sinks [2]. Wind tunnel tests measure thermal resistance and system impedance [3]:…”

Section: Thermoelectric Modules Designmentioning

confidence: 99%

Section: P Pi Pomentioning

confidence: 99%

Section: Heat Transfer Theoretical Modelmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of Heat Sink Geometry for Improved Thermoelectric Generator Efficiency

Babu,

Kumar

2024

IJHT

View full text Add to dashboard Cite

show abstract

“…Although the degree of confinement varies from one structure to another, the geometry of these objects in itself can prove to carry interesting effects. For this, SiNWs are involved in various fields of application such as biosensors [3], photovoltaic [4], and electronic field [5]. SiNWs can be obtained from several synthesis methods which are classified into two approaches, namely top-down and bottom-up approaches [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of the insertion of silver nanoparticles on the performance and electrical features of Ag/SiNWs Schottky diode

Hemdani,

Rahmani

2024

Phys. Scr.

View full text Add to dashboard Cite

In this paper, we studied the effect of the passivation of silicon nanowires (SiNWs) by silver nanoparticles (AgNPs) on the efficiency of Ag/SiNWs/Si Schottky diodes. SiNWs are obtained by one-step Ag-assisted chemical etching method. AgNPs were deposited on SiNWs using an electroless dipping method. Schottky junction devices have been successfully made using silicon nanowires coated with silver nanoparticles. The current–voltage (I-V) characteristics of Ag/AgNPs-SiNWs Schottky diode have been investigated by varying the immersion time in silver nitrate solution from 1 to 5 min. The I-V characteristics presented in logarithmic scale confirmed the domination of SCLC conduction mechanism at high voltage. The ideality factor (n), height of potential barrier (φb) and series resistance (Rs) of diodes are calculated by adopting the Cheung method. Compared to the Ag/SiNWs Schottky junction, the diode that presents AgNPs at the interface shows a significant improvement in electrical parameters. The potential barrier reaches 1.09 eV and the ideality factor is reduced to 2.64 with the presence of AgNPs for an immersion time of 1 min. Norde’s equation has also been used to calculate the series resistance and the potential barrier. The results obtained by Norde method are slightly shifted compared to those found by Cheung functions while the findings concerning the optimization of the immersion time are practically the same.

show abstract

Recent Advances and Prospects in Silicon Nanowire Sensors: A Critical Review

Sreejith,

Ajayan,

Uma Reddy

et al. 2023

Silicon

View full text Add to dashboard Cite

Micro-heat sink based on silicon nanowires formed by metal-assisted chemical etching for heat dissipation enhancement to improve performance of micro-thermoelectric generator

Cited by 10 publications

References 45 publications

Optimization of Heat Sink Geometry for Improved Thermoelectric Generator Efficiency

Optimization of Heat Sink Geometry for Improved Thermoelectric Generator Efficiency

Effect of the insertion of silver nanoparticles on the performance and electrical features of Ag/SiNWs Schottky diode

Recent Advances and Prospects in Silicon Nanowire Sensors: A Critical Review

Contact Info

Product

Resources

About