Article
Chemistry, Physical
Hyunwoo Bark, Matthew Wei Ming Tan, Gurunathan Thangavel, Pooi See Lee
Summary: This study introduces a strategy to obtain thermally conductive and soft elastomers with a high-volume ratio of EGaIn nanoparticles by surface modification and crosslinking, demonstrating excellent thermal transport properties and low elastic modulus. The elastomer exhibits anisotropic thermal conductivity upon stretching, making it suitable for use as a thermal interface layer for thermoelectric devices.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Hyun-Ae Cha, Su-Jin Ha, Hye-Jeong Jang, Byeong-Min Ahn, Young Kook Moon, Jung-Hwan Kim, Jong-Jin Choi, Byung-Dong Hahn, Sang-Ho Han, Jun Lim, Do-Cheon Ahn, In Chul Jung, Kyung-Hoon Cho, Do Kyung Kim, Jae Chul Kim, Cheol-Woo Ahn
Summary: A method of forming a nanocrystalline surface layer through liquid-phase sintering is proposed as a fabrication method for advanced ceramic filler in polymer-ceramic composite materials. The nanocrystalline MgO surface layer has hydrophobic properties and high thermal conductivity, making it a high-performance thermal interface material when mixed with polymers.
Article
Nanoscience & Nanotechnology
Fei Kong, Jingyi Yan, Chuansheng Zhang, Wei Yang, Kun Wang, Cheng Zhang, Tao Shao
Summary: The thermal conductivity of polymer materials is crucial for high-voltage electrical insulation. To address the issue of insulation failure and damage caused by increased heat accumulation, the addition of fillers with high thermal conductivity is a common solution. However, the interfacial thermal resistance between filler and bulk materials poses a major obstacle. In this study, nanofillers are modified using plasma technology to reduce interfacial thermal resistance. Results showed significant increase in thermal conductivity after plasma modification, with the sample modified by Ar+O2 atmosphere exhibiting a 35% increase in thermal conductivity. These findings have potential implications for the development of high-performance epoxy composites.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jun-Qi Hu, Yue-Zhu Li, Song-Yi Liao, Xing-Wen Huang, Yi-Zhao Chen, Xiao-Kang Peng, Yi-Bin Yang, Yong-Gang Min
Summary: The study developed a Cu@graphene-like thermal film composite current collector with ultra-lightweight and high thermal conductivity, showing smaller areal density and higher thermal conductivity compared to commercial copper foil. This material may become a competitive alternative to meet the needs for high safety, energy, and performance of LIBs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Thermodynamics
Smita Mahadevappa Nyamgoudar, Vasavi Prasuna Silaparasetti, M. P. Shilpa, K. S. Pavithra, Shridhar Mundinamani, K. M. Eshwarappa, Srivathsava Surabhi, Koduri Ramam, Ravikirana, A. Ganesha, S. C. Gurumurthy
Summary: Nanofluids are a type of fluid prepared by dispersing nanoparticles in conventional base fluids, which have excellent thermo-physical properties and potential applications in manufacturing industries. In this study, silver nanoparticles and nanorods were prepared using a simple chemical reduction method, and their effect on the thermal conductivity of the base fluids was investigated. The results showed that nanofluids containing 2% of silver nanoparticles and nanorods exhibited the optimal heat conductivity.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Environmental
Chen Chen, Dongyi Shen, Chengliang Xia, Zongwei Zhang, Wenxuan Wang, Qian Zhang, Yue Chen
Summary: A layer-structure compound Bi2Si2Te6 is introduced as a promising thermoelectric material with low thermal conductivity and improved zT value through antimony alloying.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Sriharsha Sudhindra, Fariborz Kargar, Alexander A. Balandin
Summary: The study found that the thermal contact resistance of noncuring graphene thermal interface materials with different surface roughness depends on the graphene loading. Decreasing surface roughness can significantly reduce the thermal contact resistance. These results are crucial for thermal management of high-power-density electronics.
Article
Materials Science, Multidisciplinary
Peng Liu, Ao Luo, Lei Liu, Yongling Li, Sanling Zhang, Weiting Zhi, Dong Pan, Ying Chen, Zhiwu Yu
Summary: An orthogonal test was conducted to optimize the component design of aerated concrete, aiming to improve its strength, cracking resistance, and water absorption. The effects of cement content, water-binder ratio, foaming agent content, and polypropylene fiber content on the performance of aerated concrete were investigated, and the optimal composition was determined. The results showed that the dosage of foaming agent greatly influenced the dry density, compressive strength, thermal conductivity, and water absorption of aerated concrete.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Energy & Fuels
T. Lucio-Martin, M. Roig-Flores, M. Izquierdo, M. C. Alonso
Summary: This study experimentally investigated the evolution of thermal conductivity of concrete at high temperatures, revealing that the initial loss of thermal conductivity during heating is mainly due to the loss of free water. Siliceous aggregates experienced the highest decrease in thermal conductivity, while the thermal conductivity partially recovered during the cooling phase.
Article
Multidisciplinary Sciences
Shuai Yue, Fei Tian, Xinyu Sui, Mohammadjavad Mohebinia, Xianxin Wu, Tian Tong, Zhiming Wang, Bo Wu, Qing Zhang, Zhifeng Ren, Jiming Bao, Xinfeng Liu
Summary: Researchers used pump-probe transient reflectivity microscopy to monitor the diffusion of photoexcited carriers in semiconducting cubic boron arsenide (c-BAs) and obtained their mobility. The experiments revealed a high ambipolar mobility for c-BAs, indicating its potential applications in high-performance electronics and optoelectronics.
Article
Multidisciplinary Sciences
Jungwoo Shin, Geethal Amila Gamage, Zhiwei Ding, Ke Chen, Fei Tian, Xin Qian, Jiawei Zhou, Hwijong Lee, Jianshi Zhou, Li Shi, Thanh Nguyen, Fei Han, Mingda Li, David Broido, Aaron Schmidt, Zhifeng Ren, Gang Chen
Summary: Semiconductors with high thermal conductivity and electron-hole mobility are crucial for electronic and photonic devices as well as for fundamental studies. Cubic boron arsenide (c-BAs), with its ultrahigh thermal conductivity and ambipolar mobility, shows promise as a candidate material for next-generation electronics.
Article
Thermodynamics
He Liu, Xinpeng Zhao
Summary: Developing a robust, cost-effective, super-thermal insulation material with ultralow thermal conductivity is challenging. Various building blocks have been explored to fabricate super-thermal insulators with different pore structures, and understanding heat transfer in highly porous structures is essential for design and applications.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Polymer Science
In-Seong Hwang, Ju-Yeong Lee, Jihyun Kim, Na-Young Pak, Jinhyun Kim, Dae-Won Chung
Summary: As a conductive polymer in the field of organic electronics, poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) can be operated at low temperatures but is susceptible to damage under high temperature conditions. Surface treatment of PEDOT:PSS with tannic acid increases its thermal stability, allowing it to maintain good conductivity and film properties at high temperatures.
Article
Chemistry, Physical
Yonghe Zhang, Min Xie, Zhigang Wang, Xiwen Song, Rende Mu, Jianquan Gao, Jinxiao Bao, Fen Zhou, Wei Pan
Summary: This study evaluated the contribution of phonon, photon, and electronic heat conduction to the thermal conductivity of high-entropy systems. The (La0.2Gd0.2Y0.2Yb0.2Er0.2)2(Zr1-xCex)2O7 (x = 0-0.5) high-entropy ceramics with a single defective fluorite structure were successfully prepared. The thermal conductivities of these ceramics showed an unusual behavior, which can be attributed to the increased electronic and photon thermal conductivities and reduced phonon-grain boundary scattering.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Green & Sustainable Science & Technology
Hongyun Zhang, Lingling Wang, Shaobo Xi, Huaqing Xie, Wei Yu
Summary: The study introduces new shape-stabilized phase change composite materials that exhibit high solar energy absorption, heat storage, and thermal conductivity. By utilizing specific combination of materials, it is possible to increase thermal conductivity and photothermal conversion efficiency.
