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Water can be transitioned to an enhanced heat-conducting phase by supercooling only the water at the bottom of a container. The temperature gradient across the 4 cm in the center of an 8 cm long column of water with a 397 mW heat source at…

Fluid Dynamics · Physics 2011-04-07 James D. Brownridge

We theoretically investigate the plasmonic heating of graphene-based systems under the mid-infrared laser irradiation, where periodic arrays of graphene plasmonic resonators are placed on dielectric thin films. Optical resonances are…

Applied Physics · Physics 2019-12-18 Anh D. Phan , Do T. Nga , Do C. Nghia , Vu D. Lam , Katsunori Wakabayashi

Graphene ranks highly as a possible material for future high-speed and flexible electronics. Current fabrication routes, which rely on metal substrates, require post synthesis transfer of the graphene onto a Si wafer or in the case of…

A promising material for hydrogen storage at room temperature-Al doped graphene was proposed theoretically by using density functional theory calculation. Hydrogen storage capacity of 5.13 wt% was predicted at T = 300 K and P = 0.1 Gpa with…

Materials Science · Physics 2009-11-13 Z. M. Ao , Q. Jiang , R. Q. Zhang , T. T. Tan , S. Li

We propose two coupled electron-hole sheets of few-layer graphene as a new nanostructure to observe superfluidity at enhanced densities and enhanced transition temperatures. For ABC stacked few-layer graphene we show that the strongly…

Superconductivity · Physics 2014-12-10 M. Zarenia , A. Perali , D. Neilson , F. M. Peeters

Progress in integrated nanophotonics has enabled large-scale programmable photonic integrated circuits (PICs) for general-purpose electronic-photonic systems on a chip. Relying on the weak, volatile thermo-optic or electro-optic effects,…

Applied Physics · Physics 2020-11-24 Jiajiu Zheng , Shifeng Zhu , Peipeng Xu , Scott Dunham , Arka Majumdar

We directly image hot spot formation in functioning mono- and bilayer graphene field effect transistors (GFETs) using infrared thermal microscopy. Correlating with an electrical-thermal transport model provides insight into carrier…

Mesoscale and Nanoscale Physics · Physics 2010-12-30 Myung-Ho Bae , Zhun-Yong Ong , David Estrada , Eric Pop

The electronic structure, specific heat, and thermal conductivity of silicon embedded in a monolayer graphene nanosheet are studied using Density Functional Theory. Two different shapes of the substitutional Si doping in the graphene are…

Mesoscale and Nanoscale Physics · Physics 2019-10-29 Hunar Omar Rashid , Nzar Rauf Abdullah , Vidar Gudmundsson

In order to realise the potential of graphene nanocomposites it is vital to control the degree of dispersion and achieve a strong graphene polymer interface. Herein, we developed a facile grafting to functionalisation approach for graphene…

Thermionic energy conversion (TEC) using nano materials is an emerging field of research. Graphene can stand high temperature as high as 4600 K in vacuum. Its work function can be engineered from its high value (for monolayer/bilayer) 4.6…

Mesoscale and Nanoscale Physics · Physics 2017-09-26 Olukunle C. Olawole , Dilip K. De

Thermal management of power electronics and Electronic Control Units is crucial in times of increasing power densities and limited assembly space. Electric and autonomous vehicles are a prominent application field. Thermal Interface…

Systems and Control · Electrical Eng. & Systems 2024-06-11 Simon Baeuerle , Andreas Steimer , Ralf Mikut

This study investigates one of the possible approaches of improvement of heat exchangers efficiency. Literature review shows that most approaches of improvement are based on the heat transfer surface increasing and laminar-to-turbulent flow…

Applied Physics · Physics 2018-03-28 Alexey Andrianov , Alexander Ustinov , Dmitry Loginov

We investigated thermal conductivity of free-standing reduced graphene oxide films subjected to a high-temperature treatment of up to 1000 C. It was found that the high-temperature annealing dramatically increased the in-plane thermal…

Thermoelectric (TE) heat pumps are a promising solid-state technology for space cooling and heating owing to their unique advantages such as environmental friendliness with no harmful refrigerants, small form factors, low noise, robustness…

Applied Physics · Physics 2024-10-15 Je-Hyeong Bahk , Thiraj D. Mohankumar , Abhishek Saini , Sarah J. Watzman

Here we report on technology developments implemented into the Graphene Flagship European project for the integration of graphene and graphene-related materials (GRMs) into energy application devices. Many of the technologies investigated…

In low-dimensional systems, the combination of reduced dimensionality, strong interactions, and topology has led to a growing number of many-body quantum phenomena. Thermal transport, which is sensitive to all energy-carrying degrees of…

Solar steam generation technology can utilize abundant and renewable solar energy for many applications. In this work, we proposed a solar steam generator using wick material with wrapped graphene nanoparticles, and the energy efficiency…

Applied Physics · Physics 2019-01-08 Xiaojia Li , Guangqiao Xu , Guilong Peng , Nuo Yang , Wei Yu , Chengcheng Deng

Thermophotovoltaic devices are energy-conversion systems generating an electric current from the thermal photons radiated by a hot body. In far field, the efficiency of these systems is limited by the thermodynamic Schockley-Queisser limit…

Mesoscale and Nanoscale Physics · Physics 2016-07-19 Riccardo Messina , Philippe Ben-Abdallah

Thermoelectric materials open a way to harness dissipated energy and make electronic devices less energy-demanding. Heat-to-electricity conversion requires materials with a strongly suppressed thermal conductivity but still high electronic…

Mesoscale and Nanoscale Physics · Physics 2022-08-31 Irián Sánchez-Ramírez , Yuriko Baba , Leonor Chico , Francisco Domínguez-Adame

Nanophotonic engineering of light-matter interaction at subwavelength scale allows thermal radiation that is fundamentally different from that of traditional thermal emitters and provides exciting opportunities for various thermal-photonic…