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Using the non-equilibrium Keldysh Green's function formalism, we investigate the effect of defects on the electronic structure and transport properties of two-dimensional topological insulators (TI). We demonstrate how the spatial flow of…

Mesoscale and Nanoscale Physics · Physics 2017-02-08 John S. Van Dyke , Dirk K. Morr

Recently, the impact of disorder on topological properties has attracted significant attention in photonics, especially the intriguing disorder-induced topological phase transitions in photonic topological Anderson insulators (PTAIs).…

Optics · Physics 2025-01-22 Zhe Li , Ziming Chen , Deyang Kong , Yongzhuo Li , Kaiyu Cui , Xue Feng , Yidong Huang

The JWST has been collecting scientific data for over two years now. Scientists are now looking deeper into the data, which introduces the need to correct known systematic effects. Important limiting factors for the MIRI/MRS are the…

Instrumentation and Methods for Astrophysics · Physics 2024-06-18 Danny Gasman , Ioannis Argyriou , Jane E. Morrison , David R. Law , Alistair Glasse , Karl D. Gordon , Patrick J. Kavanagh , Craig Lage , Polychronis Patapis , G. C. Sloan

We discovered the chirality of charge density waves (CDW) in 1T-TiSe$_2$ by using scanning tunnelling microscopy (STM) and optical ellipsometry. We found that the CDW intensity becomes $I{a_1}:I{a_2}:I{a_3} = 1:0.7 \pm 0.1:0.5 \pm 0.1$,…

Other Condensed Matter · Physics 2015-05-18 J. Ishioka , Y. H. Liu , K. Shimatake , T. Kurosawa , K. Ichimura , Y. Toda , M. Oda , S. Tanda

Patterning the front side of an ultra-thin crystalline silicon (c Si) solar cell helps keeping the energy conversion efficiency high by compensating for the light absorption losses. A super-Gaussian mathematical expression was used in order…

We study the QCD--DM scenario by analyzing the imprint of energy injection from decaying dark-sector particles on the spectral distortions (SDs) of the Cosmic Microwave Background (CMB). We adopt a unified framework capable of describing…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-12 Jorge Mastache , Raúl Henriquez-Ortiz

This paper addresses three-dimensional signal distortion and image reconstruction issues in x-ray Bragg coherent diffraction imaging (BCDI) in the event of a general non-orthogonal orientation of the area detector with respect to the…

Instrumentation and Detectors · Physics 2020-12-07 Siddharth Maddali , Marc Allain , Peng Li , Virginie Chamard , Stephan O. Hruszkewycz

We report spatially resolved optical probing of charge traps in organic field-effect transistors using focussed laser illumination. By scanning a 635 nm laser across the transistor channel and simultaneously acquiring transfer…

Materials Science · Physics 2025-09-24 Dean Kos , Marta Mas-Torrent

Incoherent Diffraction Imaging - IDI - is a diffraction-based imaging technique that has been recently proposed to exploit the partial coherence of incoherently scattered light to retrieve structural information from the scattering centers.…

This paper introduces a backpropagation-based technique for the calibration of the mismatch errors of time-interleaved analog to digital converters (TI-ADCs). This technique is applicable to digital receivers such as those used in coherent…

Signal Processing · Electrical Eng. & Systems 2020-08-10 Fredy Solis , Benjamín T. Reyes , Damián A. Morero , Mario R. Hueda

Throughout a typical Earth orbit a satellite is constantly bombarded by radiation with trapped and solar protons being of particular concern as they gradually damage the focal plane devices throughout the mission and degrade their…

Instrumentation and Detectors · Physics 2022-02-02 S. Parsons , T. Buggey , A. Holland , S. Sembay , G. Randall , O. Hetherington , D. Yeoman , D. Hall , P. Verhoeve , M. Soman

Space Charge (SC) distortions are some of the main issues for high-resolution Time Projection Chambers (TPC). The two main SC sources are those from primary ionizations and those that result from amplification stages. The gain stages are…

Instrumentation and Detectors · Physics 2020-08-26 Vladislav Zakharov , Prakhar Garg , Thomas Hemmick , Klaus Dehmelt

The consecutive transients (CT) method is a diagnostics approach combining experimental and computational techniques to probe the plasma parameters of Charge Breeder Electron Cyclotron Resonance Ion Sources (CB-ECRIS). The method is based…

Accelerator Physics · Physics 2023-10-18 Julien Angot , Olli Tarvainen , Hannu Koivisto , Miha Luntinen , Thomas Thuillier , Ville Toivanen

Cooperative-integrated sensing and communication (C-ISAC) networks have emerged as promising solutions for communication and target sensing. However, imperfect channel state information (CSI) estimation and time synchronization (TS) errors…

Signal Processing · Electrical Eng. & Systems 2025-01-28 Yue Xiu , Yang Zhao , Ran Yang , Dusit Niyato , Jing Jin , Qixing Wang , Guangyi Liu , Ning Wei

We present a system of X-ray photometry for the Chandra satellite. X-ray photometry can be a powerful tool to obtain flux estimates, hardness ratios, and colors unbiased by assumptions about spectral shape and independent of temporal and…

Astrophysics · Physics 2008-12-18 H. -J. Grimm , J. McDowell , G. Fabbiano , M. Elvis

In this paper, we provide the first computations for the distortion transfer functions of the cosmic microwave background (CMB) in the perturbed Universe, following up on paper I and II in this series. We illustrate the physical effects…

Cosmology and Nongalactic Astrophysics · Physics 2022-12-07 Thomas Kite , Andrea Ravenni , Jens Chluba

Pretraining on large-scale datasets has been shown to improve transformer generalizability, even for out-of-domain (OOD) modalities and tasks. However, two common assumptions often fail under OOD transfer: that downstream datasets can be…

Edge-TCT and charge collection measurements with passive test structures made in LFoundry 150 nm CMOS process on p-type substrate with initial resistivity of over 3 k$\Omega$cm are presented. Measurements were made before and after…

Instrumentation and Detectors · Physics 2018-08-01 I. Mandić , V. Cindro , A. Gorišek , B. Hiti , G. Kramberger , M. Zavrtanik , M. Mikuž , T. Hemperek

We characterize the astrometric distortion at the edges of thick, fully-depleted CCDs in the lab using a bench-top simulation of LSST observing. By illuminating an array of forty thousand pinholes (30mu m diameter) at the object plane of a…

Instrumentation and Methods for Astrophysics · Physics 2015-07-13 Andrew Bradshaw , Craig Lage , Elodie Resseguie , J. A. Tyson

Energetic charged particles generated by inertial confinement fusion (ICF) implosions encode information about the spatial morphology of the hot-spot and dense fuel during the time of peak fusion reactions. The knock-on deuteron imager…