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Atomic resolution imaging in transmission electron microscopy (TEM) and scanning TEM (STEM) of light elements in electron-transparent materials has long been a challenge. Biomolecular materials, for example, are rapidly altered when…

Instrumentation and Detectors · Physics 2018-12-05 Fehmi S. Yasin , Tyler R. Harvey , Jordan J. Chess , Jordan S. Pierce , Colin Ophus , Peter Ercius , Benjamin J. McMorran

Influences of a substrate below samples in imaging performances are studied by reaching the solution to the dyadic Green's function, where the substrate is modeled as half space in the sample region. Then, theoretical and numerical analysis…

Optics · Physics 2021-02-03 Zicheng Liu , Krishna Agarwal

In this paper we present irradiation measurements performed to select a transparent anode substrate that best meets the requirements of an optical readout for a novel detector, the LaGEMPix. The modification of the optical properties of the…

Instrumentation and Detectors · Physics 2021-06-10 A. Maia Oliveira , S. Braccini , P. Casolaro , N. Heracleous , J. Leidner , I. Mateu , F. Murtas , M. Silari

High-resolution patterning of periodic structures over large areas has several applications in science and technology. One such method, based on the long-known Talbot effect observed with diffraction gratings, is achromatic Talbot…

Applied Physics · Physics 2023-05-03 Dimitrios Kazazis , Li-Ting Tseng , Yasin Ekinci

Aberration-corrected optics have made electron microscopy at atomic-resolution a widespread and often essential tool for nanocharacterization. Image resolution is dominated by beam energy and the numerical aperture of the lens ({\alpha}),…

Terbium and thulium thin films were produced by Molecular Plating under controlled conditions to elucidate a possible influence of water and carbon dioxide present in the plating solution. Platings were made in a glovebox with variable…

We report on the development and application of an atomic layer etching (ALE) procedure based on alternating exposures of trimethylaluminum and anhydrous hydrogen fluoride (HF) implemented to controllably etch aluminum oxide. Our ALE…

Environmental transmission electron microscopy (E-TEM) enables direct observation of nanoscale chemical processes crucial for catalysis and materials design. However, the high-energy electron probe can dramatically alter reaction pathways…

We propose a setup enabling electron energy loss spectroscopy to determine the density of the electrons accumulated by an electro-positive dielectric in contact with a plasma. It is based on a two-layer structure inserted into a recess of…

Applied Physics · Physics 2020-01-08 E. Thiessen , F. X. Bronold , H. Fehske

We perform a comparative study of light storage in antirelaxation-coated and buffer-gas-filled alkali-vapor cells using electromagnetically induced transparency (EIT) in warm rubidium vapor. The use of a buffer-gas-filled cell resulted in…

Quantum Physics · Physics 2024-05-30 Marin Ðujić , D. Buhin , N. Šantić , D. Aumiler , T. Ban

A metal-oxide film can be used as a hydrogen-isotope permeation barrier in the fuel circulation system for nuclear fusion. We fabricated Er$_2$O$_3$ thin film on a type 316L stainless-steel substrate by using a metal-organic chemical vapor…

Applied Physics · Physics 2020-01-08 Halim Choi , Y. H. Shin , Yongmin Kim

We investigated plasma heating enhancement using a high-intensity, high-contrast laser and a cone-attached target. Fast electron spectra and X-ray emission were measured with an electron spectrometer and a Bragg crystal spectrometer. The…

Probing optical excitations with high resolution is important for understanding their dynamics and controlling their interaction with other photonic elements. This can be done using state-of-the-art electron microscopes, which provide the…

Materials Science · Physics 2021-10-13 Renwen Yu , Andrea Konečná , F. Javier García de Abajo

We predict that superconducting particles will show an apparent increase in thickness at low temperatures when measured by electron holography. This will result not from a real thickness increase, rather from an increase in the mean inner…

Superconductivity · Physics 2013-06-18 J. E. Hirsch

A gaseous beam monitor utilizing gas electron multiplier (GEM) and pixel sensors is being developed for the Cooling Storage Ring (CSR) External-target Experiment (CEE) at Heavy Ion Research Facility in Lanzhou (HIRFL). The beam monitor is…

The adsorption of concentrated polydiallyldimethylammonium chloride, PDADMAC-sodium lauryl ether sulfate (SLES) mixtures at the water-vapor interface has been studied by different surface tension techniques and dilational viscoelasticity…

Soft Condensed Matter · Physics 2024-01-30 Andrew Akanno , Eduardo Guzman , Laura Fernandez-Pena , Sara Llamas , Francisco Ortega , Ramon G. Rubio

Ambient humidity poses a significant challenge in the development of practical room temperature NO$_2$ gas sensors. Here, we employ atomically precise zigzag edges in multilayer MoS$_2$, fabricated using electron beam lithography and…

We present an analysis of the HI and CO gas in conjunction with the Planck/IRAS submillimeter/far-infrared dust properties toward the most outstanding high latitude clouds MBM 53, 54, 55 and HLCG 92-35 at b = -30 deg to -45 deg. The CO…

Hybrid energy storage systems (HESS) have carved a niche in the industry. HESS improve the system efficiency, reduce the overall cost and increase the lifespan of the system. The proton exchange membrane (PEM) fuel cell is hybridized with…

Systems and Control · Electrical Eng. & Systems 2020-12-01 Ashita Victor , Abhay Shankar Jha , Janamejaya Channegowda , Sumukh Surya , Kali vara prasad Naraharisetti

A novel kind of electron beam sustained discharge is presented in which a 12keV electron beam is combined with a 2.45GHz microwave power to excite argon gas at atmospheric pressure in a continuous mode of operation. Optical emission…

Plasma Physics · Physics 2015-11-30 T. Dandl , H. Hagn , A. Neumeier , J. Wieser , A. Ulrich
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