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http://dx.doi.org/10.1093/nsr/nwad315 | DOI Listing |
Phys Chem Chem Phys
January 2025
Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China.
In the study of GaN/AlGaN heterostructure thermal transport, the interference of strain on carriers cannot be ignored. Although existing research has mainly focused on the intrinsic electronic and phonon behavior of the materials, there is a lack of studies on the transport characteristics of the electron-phonon coupling in heterostructures under strain control. This research comprehensively applies first-principles calculations and the Boltzmann transport equation simulation method to deeply analyze the thermal transport mechanism of the GaN/AlGaN heterojunction considering in-plane strain, with particular attention to the regulatory role of electron-phonon coupling on thermal transport.
View Article and Find Full Text PDFJ Phys Chem Lett
December 2024
Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, United States.
Conical intersections are ubiquitous in the energy landscape of chemical systems, drive photochemical reactivity, and are extremely challenging to observe spectroscopically. Using two-dimensional electronic spectroscopy, we observe the nonadiabatic dynamics in Wurster's Blue after excitation to the lowest two vibronic excited states. The excited populations relax ballistically through a conical intersection in 55 fs to the electronic ground state potential energy surface as the molecule undergoes an intramolecular electron transfer.
View Article and Find Full Text PDFLangmuir
December 2024
Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China.
Gas transport through nanochannels has aroused significant interest in many fields. Recently, "ballistic transport" of gas was observed through a two-dimensional graphene nanochannel, and it causes a peculiar enhancement compared to the predictions of the Knudson theory. Many studies attributed this effect to the specular reflection caused by the atomically smooth surface of the channel.
View Article and Find Full Text PDFPhys Chem Chem Phys
November 2024
School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, China.
As an outstanding two-dimensional (2D) semiconductor among III-V compounds, InAs has attracted significant attention due to its much higher electron mobility than silicon and potential for enhanced opportunities in the field of electronic and optical devices. Recently, 2D semiconducting InAs with a thickness of 4.8 nm has been successfully prepared.
View Article and Find Full Text PDFSensors (Basel)
October 2024
National School of Nanoscience and Nanotechnology, Abdelhafid Ihaddaden Science and Technology Hub, Sidi Abdellah, Algiers 16000, Algeria.
In this paper, we propose an ultrascaled WS field-effect transistor equipped with a Pd/Pt sensitive gate for high-performance and low-power hydrogen gas sensing applications. The proposed nanosensor is simulated by self-consistently solving a quantum transport equation with electrostatics at the ballistic limit. The gas sensing principle is based on the gas-induced change in the metal gate work function.
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