Patrick Yuheng Wang
Hello! I am Patrick, a chemical physicist educated at the University of Edinburgh. I am now working towards my DPhil in physical and theoretical chemistry in probing electron correlation effects using ultrafast X-ray scattering.
I currently hold a stipendiary lectureship at Christ Church, University of Oxford in Physical Chemistry. I am responsible for organising/teaching the undergraduate physical chemistry tutorials of the MChem degree for years one, two, and three in college. I also assist with the undergraduate admission interviews/assessments for the college. I teach the quantum chemistry supplementary subject for second year undergraduates in the Department of Chemistry at Oxford as well.
During my undergrad, I worked at Diamond Light Source, UK’s national synchrotron facility, where I performed research on soft X-ray optics and ray-tracing simulations. My master’s thesis focussed on developing new methodologies for simulating soft X-ray beamlines with plane grating monochromators. A copy can be downloaded here.
I am currently working on developing the theory required for probing electron correlation effects in atoms and molecules using scattering experiments done at X-ray free electron lasers. This would hopefully shed light on the fundamental electron dynamics as well as improve our current quantum chemistry methods.
Academic
Master of Chemical Physics Honours, First Class, University of Edinburgh, September 2024
Doctor of Philosophy in Chemistry (Physical and Theoretical Chemistry), University of Oxford, Ongoing
Academic Appointments
Departmental Tutor, Department of Chemistry, University of Oxford, October 2024–Present
Stipendiary Lecturer in Physical Chemistry, Christ Church, University of Oxford, October 2025–Present
Committe Member, Royal Society of Chemistry Theoretical Chemistry Interest Group, January 2025–Present
Publications
2025
Wang, Patrick Yuheng; Silva, Murilo Bazan Da; Held, Georg; Wang, Hongchang; Sawhney, Kawal; Walters, Andrew C.
An Automated and Robust Method for Modelling X-ray Beamlines with Plane Grating Monochromators Journal Article
In: Journal of Synchrotron Radiation, vol. 32, no. 4, 2025, ISSN: 1600-5775.
@article{wangAutomatedRobustMethod2025,
title = {An Automated and Robust Method for Modelling X-ray Beamlines with Plane Grating Monochromators},
author = {Patrick Yuheng Wang and Murilo Bazan Da Silva and Georg Held and Hongchang Wang and Kawal Sawhney and Andrew C. Walters},
doi = {10.1107/S1600577525003200},
issn = {1600-5775},
year = {2025},
date = {2025-07-01},
urldate = {2025-07-01},
journal = {Journal of Synchrotron Radiation},
volume = {32},
number = {4},
abstract = {The plane grating monochromator (PGM) is an optical instrument used in the majority of soft X-ray beamlines. Despite its ubiquity, the PGM efficiency can easily be overestimated, because the geometry of many modern PGMs can lead to unexpected blocking of the beam. We have developed a new workflow in Python for simulating PGMs, thus extending the capabilities of SHADOW3 , a well established ray tracing software tool. We have used our method to simulate the flux on branch C of the Versatile Soft X-ray (VerSoX) beamline B07 at Diamond Light Source. The simulation results demonstrate qualitative agreement with the experimental measurements, confirming the robustness of the proposed methodology.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The plane grating monochromator (PGM) is an optical instrument used in the majority of soft X-ray beamlines. Despite its ubiquity, the PGM efficiency can easily be overestimated, because the geometry of many modern PGMs can lead to unexpected blocking of the beam. We have developed a new workflow in Python for simulating PGMs, thus extending the capabilities of SHADOW3 , a well established ray tracing software tool. We have used our method to simulate the flux on branch C of the Versatile Soft X-ray (VerSoX) beamline B07 at Diamond Light Source. The simulation results demonstrate qualitative agreement with the experimental measurements, confirming the robustness of the proposed methodology.
Wang, Patrick Yuheng; Silva, Murilo Bazan Da; Hand, Matthew; Wang, Hongchang; Chang, Peter; Beilsten-Edmands, Victoria; Kim, Timur K.; Lee, Tien-Lin; Sawhney, Kawal; Walters, Andrew C.
PGMweb : An Online Tool for Visualizing the X-ray Beam Path through Plane Grating Monochromators Journal Article
In: Journal of Synchrotron Radiation, vol. 32, no. 1, pp. 261–268, 2025, ISSN: 1600-5775.
@article{wangPGMwebOnlineTool2025,
title = {PGMweb : An Online Tool for Visualizing the X-ray Beam Path through Plane Grating Monochromators},
author = {Patrick Yuheng Wang and Murilo Bazan Da Silva and Matthew Hand and Hongchang Wang and Peter Chang and Victoria Beilsten-Edmands and Timur K. Kim and Tien-Lin Lee and Kawal Sawhney and Andrew C. Walters},
doi = {10.1107/S1600577524011603},
issn = {1600-5775},
year = {2025},
date = {2025-01-01},
urldate = {2025-01-01},
journal = {Journal of Synchrotron Radiation},
volume = {32},
number = {1},
pages = {261–268},
abstract = {We present here a newly developed software tool (called PGMweb ) for computing and simulating the X-ray beam path through a plane grating monochromator (PGM), a key component in soft X-ray beamlines at modern synchrotron and free-electron laser facilities. A historical overview of the development of PGMs is presented, with special attention dedicated to the collimated PGM optical scheme found at several X-ray facilities worldwide. The analytical expressions that fully describe the geometry of a PGM are derived and have been implemented as functions in a Python library ( pyplanemono ). PGMweb is distributed as a web-based application that can be run in any modern browser without installation, making its use very straightforward for X-ray beamline designers and beamline scientists alike.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We present here a newly developed software tool (called PGMweb ) for computing and simulating the X-ray beam path through a plane grating monochromator (PGM), a key component in soft X-ray beamlines at modern synchrotron and free-electron laser facilities. A historical overview of the development of PGMs is presented, with special attention dedicated to the collimated PGM optical scheme found at several X-ray facilities worldwide. The analytical expressions that fully describe the geometry of a PGM are derived and have been implemented as functions in a Python library ( pyplanemono ). PGMweb is distributed as a web-based application that can be run in any modern browser without installation, making its use very straightforward for X-ray beamline designers and beamline scientists alike.
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