scholarly journals A cross-interface model for thermal transport across the interface between overlapped nanoribbons

2019 ◽  
Vol 21 (45) ◽  
pp. 25072-25079 ◽  
Author(s):  
Wentao Feng ◽  
Xiaoxiang Yu ◽  
Yue Wang ◽  
Dengke Ma ◽  
Zhijia Sun ◽  
...  
Keyword(s):  
Composite Materials ◽  
Thermal Transport ◽  
Heat Dissipation ◽  
Electronic Devices ◽  
Interface Model ◽  
Comprehensive Understanding ◽  
The Cross ◽  
Low Dimensional ◽  
Low Dimensional Materials

The application of low-dimensional materials for heat dissipation requires a comprehensive understanding of thermal transport at the cross-interface, which widely exists in various composite materials and electronic devices.

Thermal Conductivity Measurement of Graphene Exfoliated on Silicon Dioxide

2010 ◽  
Author(s):  
Jae Hun Seol ◽  
Arden L. Moore ◽  
Insun Jo ◽  
Zhen Yao ◽  
Li Shi
Keyword(s):  
Thermal Conductivity ◽  
Silicon Dioxide ◽  
Thermal Transport ◽  
Heat Dissipation ◽  
Electronic Materials ◽  
Conductivity Measurement ◽  
Heat Transfer Analysis ◽  
Suspended Graphene ◽  
Numerical Heat Transfer ◽  
Low Dimensional

Since graphene was first exfoliated from graphite, the monatomic layer of carbon atoms has attracted great interest for fundamental studies of unique two dimensional transport phenomena. Meanwhile, graphene is being explored for nanoelectronic applications because of the superior electron mobility and mechanical strength as well as compatibility with existing planar silicon-based microelectronics. The ultrahigh thermal conductivity suggested recently for suspended graphene is another attractive feature that may potentially address the increasingly severe heat dissipation problems in nanoelectronic devices. However, little is known about thermal transport properties of supported graphene that is used in most graphene device configurations. To better understand thermal transport in supported graphene, we have developed a device to measure the thermal conductivity of graphene exfoliated on a silicon dioxide beam. The obtained peak thermal conductivity is about 600 W/m-K near room temperature. This value is lower than the basal plane values for graphite and suspended graphene, but still considerably higher than common electronic materials. The measurement results at low temperatures further reveal intriguing low dimensional behaviors. Here, we present a detailed analytical and numerical heat transfer analysis of the thermal measurement method.

scholarly journals Methodology Perspective of Computing Thermal Transport in Low-Dimensional Materials and Nanostructures: The Old and the New

ACS Omega ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 3278-3284 ◽  
Author(s):  
Yanguang Zhou ◽  
Zheyong Fan ◽  
Guangzhao Qin ◽  
Jia-Yue Yang ◽  
Tao Ouyang ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Low Dimensional ◽  
Low Dimensional Materials

scholarly journals Electronic thermal transport measurement in low-dimensional materials with graphene non-local noise thermometry

2021 ◽  
Author(s):  
Jonah Waissman ◽  
Laurel E. Anderson ◽  
Artem V. Talanov ◽  
Zhongying Yan ◽  
Young J. Shin ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Transport Measurement ◽  
Noise Thermometry ◽  
Non Local ◽  
Low Dimensional ◽  
Low Dimensional Materials

scholarly journals The Highly Uniform Photoresponsivity from Visible to Near IR Light in Sb2Te3 Flakes

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1535
Author(s):  
Shiu-Ming Huang ◽  
Jai-Lung Hung ◽  
Mitch Chou ◽  
Chi-Yang Chen ◽  
Fang-Chen Liu ◽  
...  
Keyword(s):  
Band Structure ◽  
Energy Difference ◽  
Experimental Result ◽  
Light Illumination ◽  
Near Ir ◽  
State Band ◽  
Valence Bands ◽  
Low Dimensional ◽  
Low Dimensional Materials ◽  
Ir Light

Broadband photosensors have been widely studied in various kinds of materials. Experimental results have revealed strong wavelength-dependent photoresponses in all previous reports. This limits the potential application of broadband photosensors. Therefore, finding a wavelength-insensitive photosensor is imperative in this application. Photocurrent measurements were performed in Sb2Te3 flakes at various wavelengths ranging from visible to near IR light. The measured photocurrent change was insensitive to wavelengths from 300 to 1000 nm. The observed wavelength response deviation was lower than that in all previous reports. Our results show that the corresponding energies of these photocurrent peaks are consistent with the energy difference of the density of state peaks between conduction and valence bands. This suggests that the observed photocurrent originates from these band structure peak transitions under light illumination. Contrary to the most common explanation that observed broadband photocurrent carrier is mainly from the surface state in low-dimensional materials, our experimental result suggests that bulk state band structure is the main source of the observed photocurrent and dominates the broadband photocurrent.

scholarly journals Definition of a scoring parameter to identify low-dimensional materials components

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Peter Mahler Larsen ◽  
Mohnish Pandey ◽  
Mikkel Strange ◽  
Karsten Wedel Jacobsen
Keyword(s):  
Definition Of ◽  
Low Dimensional ◽  
Low Dimensional Materials

scholarly journals Multiple Exciton Generation in Isolated and Interacting Silicon Nanocrystals

Nanoscale ◽  
2021 ◽  
Author(s):  
Ivan Marri ◽  
Stefano Ossicini
Keyword(s):  
Renewable Energy ◽  
Solar Cell ◽  
Silicon Nanocrystals ◽  
Photovoltaic Systems ◽  
Multiple Exciton Generation ◽  
Important Challenge ◽  
Low Dimensional ◽  
Low Dimensional Materials

An important challenge in the field of renewable energy is the development of novel nanostructured solar cell devices which implement low-dimensional materials to overcome the limits of traditional photovoltaic systems....

Reasonably designed 2D WS2 and CdS microwire heterojunction for high performance photoresponse

Nanoscale ◽  
2021 ◽  
Author(s):  
Z.Q. Zheng ◽  
Yuchen Zhou ◽  
Wei Gao ◽  
Li Zhang ◽  
Mengmeng Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Low Dimensional ◽  
Low Dimensional Materials

Heterojunctions based on low-dimensional materials can combine the superiorities of each composition and realize novel properties. Herein, a mixed-dimensional heterojunction comprising multilayer WS2, CdS microwire and few-layer WS2 has been...

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