A5102719804- Advanced Electron Microscopy Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Integrated Circuits and Semiconductor Failure Analysis
- Near-Field Optical Microscopy
- Force Microscopy Techniques and Applications
- Spacecraft and Cryogenic Technologies
- Particle accelerators and beam dynamics
- Advanced Fluorescence Microscopy Techniques
- Superconducting Materials and Applications
- Laser Design and Applications
- Nuclear Physics and Applications
- Metallurgical Processes and Thermodynamics
- Advanced Sensor Technologies Research
- Photocathodes and Microchannel Plates
- Diamond and Carbon-based Materials Research
- Particle Detector Development and Performance
- Advanced Frequency and Time Standards
- Terahertz technology and applications
- Viral Infectious Diseases and Gene Expression in Insects
- Magnetic confinement fusion research
- Analog and Mixed-Signal Circuit Design
- Cold Atom Physics and Bose-Einstein Condensates
- Optical Coatings and Gratings
- Non-Destructive Testing Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
Euclid Techlabs (United States)
2018-2024
Cardiff University
2024
TechLab (United States)
2018-2019
Huazhong University of Science and Technology
2019
Institute of High Energy Physics
2012-2018
Chinese Academy of Sciences
2012-2018
A laser-free hack for ultrafast electron microscopy reveals electromagnetic wave dynamics at picosecond time scale.
A 300 keV transmission electron microscope was modified to produce broadband pulsed beams that can be, in principle, between 40 MHz and 12 GHz, corresponding temporal resolution the nanosecond picosecond range without an excitation laser. The key enabling technology is a pair of phase-matched modulating de-modulating traveling wave metallic comb striplines (pulsers). An initial 30 ps achieved with strobe frequency 6.0 GHz. placement pulsers, mounted immediately below gun, allows for...
We demonstrate a novel method of stabilizing an external-cavity diode laser frequency to atomic transition. This technique employs sub-Doppler spectrum Cs atoms in thin 150 µm vapour cell. obtain the result fluctuation be less than 0.8 MHz using third derivative signal, with root Allan variance error signals reaching minimum 5.9 × 10−11 for averaging time 200 s.
In this paper, the limitations of common method measuring intrinsic spatial resolution GEM imaging detector are presented. Through theoretical analysis and experimental verification, we have improved to avoid these limitations. Using methods, a more precise measurement resolutions obtained.
Abstract We report mitigation of electron-beam-induced radiation damage in biological macromolecules using rapid, low-dose transmission electron microscopy (TEM) with a new, tunable, retrofittable picosecond pulser. Damage strategies historically consisted sample cryoprotection and ultra-low beam current; ultrafast laser-pulsed systems have shown promise, but day-long acquisition times. show the first practical, fast, laser-free tunable system, diffraction series minutes at 5.2 GHz 10 pA....
The article’s main research mission is making predictions about energy usage within an EAF steel production operation and being able to reliably predict consumption. Besides, we analysed the relationship between consumption in electric arc furnace (EAF) processes by method of data mining, so could obtain accurate forecasts optimize costs maximize efficiency. Last but not least, using decision tree, random tree algorithms multilayer perceptron models, can easily achieve intended goals...
Abstract The current research status of fuel cells in the space field is first introduced, followed by an analysis comprehensive utilization mode cell energy from three aspects: water, gas, and heat. evaporated liquid hydrogen oxygen tanks spacecraft can be used for power generation. heat generated to preheat gases through a dual-channel exchanger, achieving thermal recovery fuels. water produced separated recovered static drainage reuse heating control or environmental systems. A prototype...
Abstract Conduction-cooling of superconducting radiofrequency (SRF) cavities using closed-cycle cryocoolers can lead to compact linear accelerators by eliminating liquid helium and the associated infrastructure. In this paper, we present first-ever experimental demonstration continuous wave (CW) accelerating gradients on a niobium SRF cavity that is cooled without helium. newly developed apparatus, single-cell, 650 MHz was conductively coupled 2 W @ 4.2 K pulse tube cryocooler high-purity...
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Since its inception [1], the ultrafast transmission electron microscope, (UTEM) which is capable of imaging nanoscale phenomena at timescales [2-4], has increasingly gained attractions among researchers.As a result, major TEM vendors have now provided UTEM option per customers' request.However entry point afemtosecond (fs) laser used to pulse emission from photocathode, presents own set barriers progress: mandatary expertise maintain operation, complete alteration gun, possible heating...
Journal Article Advancements in UltraFast Electron Microscopy Get access Darrin Leonhardt, Leonhardt Euclid Techlabs, LLC, Beltsville, MD, USA Corresponding author: d.leonhardt@euclidtechlabs.com Search for other works by this author on: Oxford Academic Google Scholar Eric Montgomery, Montgomery Chunguang Jing, Jing Bolingbrook, IL, Bart Wyderski, Wyderski Yubin Zhao, Zhao Spencer Reisbick, Reisbick Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory,...
We report the application of resistive anode readout method on a two dimensional imaging GEM detector. The consists $6\times6$ cells with cell size $6~\mathrm{mm}\times6~\mathrm{mm}$. New electronics and DAQ system are used to process signals from 49 channels. detector has been tested by using X-ray tube (8~keV). spatial resolution is about $103.46~\mathrm{μm}$ response part $66.41~\mathrm{μm}$. nonlinearity less than $1.5\%$. A quite good capability achieved as well. performances show...
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Journal Article Laser-Free GHz Stroboscopic TEM: Construction, Deployment, and Benchmarking Get access June W Lau, Lau National Institute of Standards Technology, Gaithersburg, MD, USA Corresponding author: june.lau@nist.gov Search for other works by this author on: Oxford Academic Google Scholar Karl B Schliep, Schliep Michael Katz, Katz Vikrant J Gokhale, Gokhale Jason Gorman, Gorman Ao Liu, Liu Euclid TechLabs, 365 Remington Blvd., Bolingbrook, IL, Yubin Zhao, Zhao Chunguang Jing, Jing...
This paper presents a low-noise single-loop third-order single-bit continuous-time (CT) Delta-Sigma modulator for sensor applications. The employs the CIFF-B structure and chopping technique to reduce power consumption low-frequency noise. FIR feedback DAC is adopted sensitivity of CT ΔΣ modulators clock jitter, method moments used design coefficients loop filter. frequency also designed carefully avoid noise aliasing effect, circuit implementation have been optimized low power. modulator,...