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We present a study of using machine learning to enhance hohlraum design for opacity measurement experiments. For opacity experiments we desire a hohlraum that, when its interior walls are illuminated by theNational Ignition Facility (NIF)…

Instrumentation and Detectors · Physics 2021-03-17 Ryan G. McClarren , I. L. Tregillis , Todd J. Urbatsch , E. S. Dodd

We propose the LCB-CV-UNet to tackle performance degradation caused by High Dynamic Range (HDR) radar signals. Initially, a hardware-efficient, plug-and-play module named Logarithmic Connect Block (LCB) is proposed as a phase coherence…

Signal Processing · Electrical Eng. & Systems 2025-11-27 Yanbin Wang , Xingyu Chen , Yumiao Wang , Xiang Wang , Chuanfei Zang , Guolong Cui , Jiahuan Liu

Resonant tunneling transport in polar heterostructures is intimately connected to the polarization fields emerging from the geometric Berry-phase. In these structures, quantum confinement results not only in a discrete electronic spectrum,…

Mesoscale and Nanoscale Physics · Physics 2023-03-16 Jimy Encomendero , Vladimir Protasenko , Debdeep Jena , Huili Grace Xing

We investigate the electron transport and thermoelectric property of twisted bilayer graphene nanoribbon junction (TBGNRJ) in $0^o$, $21.8^o$, $38.2^o$ and $60^o$ rotation angles by first principles calculation with Landauer-Buttiker and…

Mesoscale and Nanoscale Physics · Physics 2019-01-29 Shuo Deng , Xiang Cai , Yan Zhang , Lijie Li

The relative twist angle in heterostructures of two-dimensional (2D) materials with similar lattice constants result in a dramatic alteration of the electronic properties. Here, we investigate the electrical and magnetotransport properties…

Mesoscale and Nanoscale Physics · Physics 2021-06-09 Manabendra Kuiri , Saurabh Kumar Srivastav , Sujay Ray , Kenji Watanabe , Takashi Taniguchi , Tanmoy Das , Anindya Das

Desirably, the world relies on the devices being compact, as they could drive to the increased functionality of integrated circuits at the provided footstep, that is becoming more reliable. To reduce the scalability over the devices,…

Materials Science · Physics 2024-01-30 Lephe S , Gifrin Fredik Raj S , Abijesh Euphrine A , Janaki S , Jamina C , Arun Jose L

Molecular electronics on silicon has distinct advantages over its metallic counterpart. We describe a theoretical formalism for transport through semiconductor-molecule heterostructures, combining a semi-empirical treatment of the bulk…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 T. Rakshit , G-C. Liang , A. W. Ghosh , S. Datta

Noise Equivalent Power and time constant of a submillimeter wave Hot-Electron Bolometer (HEB) made from monolayer graphene are analyzed using the lowest electron-phonon thermal conductance data reported to date. Frequency-domain multiplexed…

Instrumentation and Detectors · Physics 2014-11-17 Boris S. Karasik , Christopher B. McKitterick , Daniel E. Prober

We suggest a new type of an ultrasensitive detector of electromagnetic fields exploiting the giant thermoelectric effect recently found in superconductor/ferromagnet hybrid structures. Compared to other types of superconducting detectors…

Superconductivity · Physics 2018-10-03 T. T. Heikkilä , R. Ojajärvi , I. J. Maasilta , E. Strambini , F. Giazotto , F. Bergeret

We investigate the atomic-scale tunneling characteristics of bilayer graphene on silicon carbide using the scanning tunneling microscopy. The high-resolution tunneling spectroscopy reveals an unexpected negative differential resistance…

The development of lightweight flex PCBs and nanowire-based thermal interfaces for low-mass, high-performance detector modules are presented. A novel manufacturing approach targeting flex circuits with double-sided pad access, assembled…

Instrumentation and Detectors · Physics 2026-01-27 Abhishek Sharma , Atul Gorane , Petra Riedler , Julian Weick

The role of near-neighbor electron attraction $V$ in strongly correlated systems has been at the forefront of recent research of unconventional superconductivity. However, its implications in the doped Hubbard model on expansive systems…

Strongly Correlated Electrons · Physics 2024-02-20 Zhi Xu , Hong-Chen Jiang , Yi-Fan Jiang

Nuclear power plant operators face significant challenges due to unpredictable deviations between offline and online thermal limits, a phenomenon known as thermal limit bias, which leads to conservative design margins, increased fuel costs,…

Machine Learning · Computer Science 2026-03-17 Anirudh Tunga , Michael J. Mueterthies , Jonathan Nistor

We study mechanical amplification and noise squeezing in a nonlinear nanomechanical resonator driven by an intense pump near its dynamical bifurcation point, namely, the onset of Duffing bistability. Phase sensitive amplification is…

Other Condensed Matter · Physics 2013-05-29 R. Almog , S. Zaitsev , O. Shtempluck , E. Buks

Recently, high entropy alloys (HEAs) have emerged as a new platform for discovering superconducting materials and offer avenues to explore exotic superconductivity. The highly disordered nature of HEA suggests regular phonon required for…

Superconductivity · Physics 2021-09-29 Kapil Motla , Arushi , P. K. Meena , D. Singh , P. K. Biswas , A. D. Hillier , R. P. Singh

We consider the stability and performance of a discrete-time control loop used as a dynamic nuller in the presence of a relatively large time delay in its feedback path. Controllers of this form occur in mm-wave telescopes using…

Instrumentation and Methods for Astrophysics · Physics 2022-07-26 Graeme Smecher , Tijmen de Haan , Matt Dobbs , Joshua Montgomery

In the case of Li-intercalated hexagonal boron nitride bilayer (Li-hBN), the vertex corrections of electron-phonon interaction cannot be omitted. This is evidenced by the very high value of the ratio $\lambda\omega_{D}/\varepsilon_{F}\sim…

Superconductivity · Physics 2020-01-24 K. A. Szewczyk , I. A. Domagalska , A. P. Durajski , R. Szczęśniak

In an infrared photodetector, noise current (dark current) is generated throughout the volume of the detector. Reducing the volume will reduce dark current, but the corresponding smaller area will also reduce the received signal. By using a…

Instrumentation and Detectors · Physics 2021-09-28 Jordan Budhu , Nicole Pfiester , Kwong-Kit Choi , Steve Young , Chris Ball , Sanjay Krishna , Anthony Grbic

In this paper, we propose to use hybrid relay-intelligent reflecting surface (HR-IRS) to improve the security performance of directional modulation (DM) system. In particular, the eavesdropper in this system works in full-duplex (FD) mode…

Information Theory · Computer Science 2023-04-17 Feng Shu , Hangjia He , Rongen Dong , Yeqing Lin , Long Shi , Qiankun Cheng , Jun Li , Jiangzhou Wang

Achieving and controlling non-reciprocity in engineered photonic structures is of fundamental interest in science and engineering. Here, we introduce a tunable, non-Hermitian, nonlinear microwave dimer designed to precisely implement…

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