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When an X-ray area detector based on a single crystalline material, for instance, a state of the art hybrid pixel detector, is illuminated from a point source by monochromatic radiation, a pattern of lines appears which overlays the…

仪器与探测器 · 物理学 2014-08-01 Christian Gollwitzer , Michael Krumrey

Low counting experiments (search for double $\beta$ decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background $\alpha$, $\beta$,…

仪器与探测器 · 物理学 2020-01-20 F. A. Danevich , V. I. Tretyak

Raman micro/macro-spectroscopy allows for a non-destructive remote analysis: body and glaze, crystalline and amorphous phases can be identified, including the nanosized pigments colouring the glaze. Last generation instruments are portable…

材料科学 · 物理学 2007-05-23 Philippe Colomban

As radio polarised emission from astrophysical objects traverse through foreground magnetised plasma, the physical conditions along the lines of sight are encrypted in the form of Rotation Measure (RM). We performed broadband…

星系天体物理 · 物理学 2017-10-10 Yik Ki Ma , Sui Ann Mao , Aritra Basu , Carl Heiles , Jennifer West

The Jiangmen Underground Neutrino Observatory (JUNO), a 20 kton multipurpose underground liquid scintillator detector, was proposed for the determination of the neutrino mass hierarchy as primary physics goal. The central detector will be…

仪器与探测器 · 物理学 2023-09-26 Y. Liu , Y. P. Zhang , J. C. Liu , C. Guo , C. G. Yang. P. Zhang , Q. Tang , Z. F. Xu , C. Li , T. Y. Guan , S. B. Wang

The measurement of the internal $^{222}$Rn activity in the NEXT-White detector during the so-called Run-II period with $^{136}$Xe-depleted xenon is discussed in detail, together with its implications for double beta decay searches in NEXT.…

Active Galactic Nuclei (AGN) are ideal sources for multi-wavelength studies as their emission can cover almost 20 orders of magnitude in frequency from the radio to the gamma-ray band. After reviewing their basic properties, I will assess…

天体物理学 · 物理学 2007-05-23 Paolo Padovani

The reflectance of graphene is investigated in the framework of the Dirac model with account of its realistic properties, such as nonzero chemical potential and band gap, at any temperature. For this purpose, the exact reflection…

介观与纳米尺度物理 · 物理学 2018-08-29 G. L. Klimchitskaya , V. M. Mostepanenko , V. M. Petrov

As the frequency range of electromagnetic wave communication continues to expand and the integration of integrated circuits increases, electromagnetic waves emitted by on-chip antennas are prone to scattering from electronic components,…

光学 · 物理学 2025-05-15 Hanchuan Chen , Fei Sun , Yichao Liu , Shuai Zhang , Hongming Fei , Zhihui Chen

Graphene is a purely two-dimensional material that has extremely favorable chemical sensor properties. It is known, however, that conventional nanolithographic processing typically leaves a resist residue on the graphene surface, whose…

材料科学 · 物理学 2009-04-08 Yaping Dan , Ye Lu , Nicholas J. Kybert , A. T. Charlie Johnson

Resonant scattering of electrons with low energies (as compared to the bandwidth) on a single neutral short-range impurity in graphene is analyzed theoretically, taking into account the valley degeneracy. Resonances dramatically increase…

材料科学 · 物理学 2009-11-13 D. M. Basko

In this paper we explored the scattering behavior of thin cylinders made of LHM and coated by a monoatomic graphene layer. A spectral tunability of the resonance peaks is evidenced by altering the chemical potential of the graphene coating,…

光学 · 物理学 2018-03-14 Hamid Pashaeiadl , Mahin Naserpour , Carlos J. Zapata-Rodriguez

In chemical processing and bioprocessing, conventional online sensors are limited to measure only basic process variables like pressure and temperature, pH, dissolved O and CO$_2$ and viable cell density (VCD). The concentration of other…

定量方法 · 定量生物学 2020-05-07 Semion Rozov

The graphene-insulator-semiconductor-structured electron source has garnered significant attention due to its high electron emission efficiency and highly monochromatic electron emission. Graphene, with its c-axis orientation and…

Raman spectroscopy is one of the widely used methods in the analysis of various samples including carbon-based materials. This study aimed to identify the number of layers and defects in graphene using micro-Raman spectroscopy. More…

光学 · 物理学 2024-03-21 Somayeh Gholipour , Maryam Bahreini , Mohamad Reza Jafarfard

This work describes a methodology for producing high quality metallic surfaces from uranium primarily for characterisation and investigations involving electron backscatter diffraction. Electrochemical measurements have been conducted to…

材料科学 · 物理学 2018-03-16 JE Sutcliffe , JR Petherbridge , T Cartwright , R Springell , TB Scott , JE Darnbrough

In alloys exhibiting substitutional disorder, the variety of atomic environments manifests itself as a `disorder broadening' in their core level binding energy spectra. Disorder broadening can be measured experimentally, and in principle…

材料科学 · 物理学 2014-07-14 T. L. Underwood , G. J. Ackland , R. J. Cole

Raman spectroscopy is an integral part of graphene research. It is used to determine the number and orientation of layers, the quality and types of edge, and the effects of perturbations, such as electric and magnetic fields, strain,…

材料科学 · 物理学 2015-06-16 Andrea C. Ferrari , Denis M. Basko

Graphene nanoribbons (GNRs) are atomically precise stripes of graphene with tunable electronic properties, making them promising for room-temperature switching applications like field-effect transistors (FETs). However, challenges persist…

Low energy, low rate experiments, such as searches for neutrinoless double beta decay and dark matter, require unprecedentedly low levels of background in order to deliver their full science potential. $^{210}$Po driven, neutron induced…

核实验 · 物理学 2023-07-10 D. Chernyak , J. Howell , D. Majumdar , N. Mukherjee , O. Nusair , A. Piepke