Profile Details

Create Project

★★★★★

☆☆☆☆☆

USD 35 /hr

★★★★★

☆☆☆☆☆

Hire Dr. Randall W. G.

Japan

USD 35 /hr

Experimental Physicist | Materials Science | Multi-Physics Simulation | Data Analysis & AI Development

Profile Summary

I'm a physicist who specializes in experimental design, discovering hidden features in data, and developing unique AI solutions. ✔️ Signal processing: data acquisition, data extraction, oscilloscopes, electronics, filters ✔️ Machine learning/AI development for data analysis: GANs, transformers, CNNs, SOMs ✔️ Experimental design and instrumentation: ultra-high vacuum equipment, surface science, high-voltage electronics, charged-particle optics, particle detectors, RF engineering, noise reduction ✔️ Multi-physics simulation: CST Studio Suite, GEANT4, SIMION My background includes over 10 years of data analysis software development and experimental hardware development, and 7 years of developing unique machine learning models and machine learning-based algorithms for signal processing (time series, image, etc.) and data analysis in unprecedented ways. I have experience with Python, PyTorch, Tensorflow, MATLAB, and C++. I've authored and co-authored more than 15 peer-reviewed publications covering fundamental physics, instrumentation/hardware development, software development, and AI/machine learning (GANs, transformers, SOMs, etc.). I have worked as a postdoctoral researcher in national security, antimatter beams, electron spectroscopy, neutrino physics, particle physics, and data science at national laboratories and universities across the US and Japan, including Fermi National Accelerator Laboratory, Pacific Northwest National Laboratory, and the University of Tokyo. Thank you very much for reading!

Subject Matter Expertise

• ★ Data Analysis
• ★ Computer Simulation/Computational Modeling
• ★ Deep Learning
• ☆ Surface Science
• ☆ Materials Science & Engineering
• ☆ Analytical Chemistry
• ☆ Spectroscopy
• ☆ UV Spectroscopy
• ☆ Electronic, Optical & Magnetic Materials
• ☆ Solid State Sciences
• ☆ Condensed Matter Physics
• ☆ Electrical Engineering
• ☆ Semiconductors
• ☆ Electronic Circuits
• ☆ Signal Processing
• ☆ Instrumentation Engineering
• ☆ Microwave Engineering
• ☆ Computer Science
• ☆ Computer Hardware
• ☆ Parallel Computing
• ☆ Software Engineering
• ☆ Internet of Things
• ☆ Nuclear Engineering
• ☆ Image Processing
• ☆ Algorithm Design
• ☆ Predictive Modeling & Analytics
• ☆ Data Processing
• ☆ Data Exploration
• ☆ Cluster Analysis
• ☆ Data Collection
• ☆ Machine Learning
• ☆ Data Cleaning
• ☆ Neural Networks
• ☆ Pattern Recognition
• ☆ Artificial Intelligence
• ☆ Statistics
• ☆ Regression Analysis
• ☆ Electromagnetism
• ☆ Radiophysics
• ☆ Particle Physics
• ☆ Computational Physics
• ☆ Applied Physics
• ☆ Plasma Physics
• ☆ Cryogenics
• ☆ Optics
• ☆ Lasers & Photonics
• ☆ Python
• ☆ Matlab
• ☆ Excel
• ☆ Tensorflow
• ☆ Scikit-learn
• ☆ Software Development
• ☆ Peer Review
• ☆ Research Methodology
• ☆ Literature Search
• ☆ Technical & Scientific Writing
• ☆ Manuscript & Journal Article Writing
• ☆ Experimental Protocols
• ☆ Scientific Proofreading & Editing
• ☆ Proofreading & Editing

Services

• Writing
• Research
• Consulting
• Data & AI

Writing Technical Writing, General Proofreading & Editing

Research Scientific and Technical Research

Consulting Scientific and Technical Consulting, Regulatory Consulting

Data & AI Predictive Modeling, Statistical Analysis, Image Processing, Algorithm Design-Non ML, Algorithm Design-ML, Data Cleaning, Data Processing, Data Insights

Work Experience

Post-Doctoral Research Fellow

The University of Texas at Arlington

September 2019 - Present

Project Researcher

The University of Tokyo

May 2022 - March 2024

Postdoctoral Researcher

Fermi National Accelerator Laboratory

October 2021 - April 2022

Postdoctoral Researcher

Pacific Northwest National Laboratory

February 2021 - October 2021

Postdoctoral Researcher

University of Texas at Arlington

September 2019 - February 2021

Education

Ph.D. (Physics)

The University of Texas at Arlington

July 2014 - August 2019

Certifications

• Certification details not provided.

Publications

JOURNAL ARTICLE

K. Shu, Y. Tajima, R. Uozumi, N. Miyamoto, S. Shiraishi, T. Kobayashi, A. Ishida, K. Yamada, R. W. Gladen, T. Namba, et al. (2024). Cooling positronium to ultralow velocities with a chirped laser pulse train . Nature.

Randall W. Gladen, Alexander J. Fairchild, Varghese A. Chirayath, Ali R. Koymen, Alex H. Weiss, Bernardo Barbiellini (2022). Photoemission Spectroscopy Using Virtual Photons Emitted by Positron Sticking: A Complementary Probe for Top-Layer Surface Electronic Structures . Physical Review Letters.

R.W. Gladen, V.A. Chirayath, P.A. Sterne, A.J. Fairchild, A.R. Koymen, A.H. Weiss (2021). Identification of Auger mechanisms responsible for low energy electron emission from graphene on copper using Auger-gamma coincidence spectroscopy . Journal of Electron Spectroscopy and Related Phenomena.

V. A. Chirayath, R. W. Gladen, A. D. McDonald, A. J. Fairchild, P. V. Joglekar, S. Satyal, Z. H. Lim, T. N. Shead, M. D. Chrysler, S. Mukherjee, et al.(2020). A multi-stop time-of-flight spectrometer for the measurement of positron annihilation-induced electrons in coincidence with the Doppler-shifted annihilation gamma photon . Review of Scientific Instruments. 91. (3). p. 033903. {AIP} Publishing

Joglekar, P.V., Gladen, R.W., Chirayath, V.A., Fairchild, A.J., Kalaskar, S., Shastry, K., Dong, Q., Hulbert, S.L., Bartynski, R.A., Werner, W.S.M., et al.(2019). Measurement of the full electron spectrum associated with the Ag N<inf>3</inf>VV Auger transitions: Evidence for the contribution of multi-electron Auger processes . Journal of Electron Spectroscopy and Related Phenomena. 235. p. 16-22.

Chirayath, V.A., Callewaert, V., Fairchild, A.J., Chrysler, M.D., Gladen, R.W., McDonald, A.D., Imam, S.K., Shastry, K., Koymen, A.R., Saniz, R., et al.(2017). Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation . Nature Communications. 8.

CONFERENCE PAPER

Chirayath, V.A., Chrysler, M.D., McDonald, A.D., Gladen, R.W., Fairchild, A.J., Koymen, A.R., Weiss, A.H.(2017). Investigation of graphene using low energy positron annihilation induced Doppler broadening spectroscopy . Journal of Physics: Conference Series. 791. (1).

Fairchild, A.J., Chirayath, V.A., Gladen, R.W., Chrysler, M.D., Koymen, A.R., Weiss, A.H.(2017). Modelling the line shape of very low energy peaks of positron beam induced secondary electrons measured using a time of flight spectrometer . Journal of Physics: Conference Series. 791. (1).

Chirayath, V.A., Gladen, R.W., Shastry, K., Chrysler, M.D., Fairchild, A.J., McDonald, A.D., Koymen, A.R., Barbiellini, B., Weiss, A.H.(2017). Positron induced electron emission from graphene . Journal of Physics: Conference Series. 791. (1).

Chrysler, M.D., Chirayath, V.A., McDonald, A.D., Gladen, R.W., Fairchild, A.J., Koymen, A.R., Weiss, A.H.(2017). Low energy positron beam system for the investigation of 2D and porous materials . Journal of Physics: Conference Series. 791. (1).

Gladen, R.W., Chirayath, V.A., Chrysler, M.D., McDonald, A.D., Fairchild, A.J., Shastry, K., Koymen, A.R., Weiss, A.H.(2017). Time of flight spectra of electrons emitted from graphite after positron annihilation . Journal of Physics: Conference Series. 791. (1).