(Press-News.org) A research team led by Prof. LIANG Xu at the Hefei Institutes of Physical Science, Chinese Academy of Sciences, has developed an ultra-compact excimer laser—roughly the size of a thermos bottle.
The results were recently published in APL Photonics.
Excimer lasers, as critical deep ultraviolet sources, are widely used in scientific research, industrial processing, and environmental monitoring. However, traditional systems rely on mechanical gas pumps for medium circulation, resulting in large size, high noise, and significant vibration. These limitations restrict their application in field environments, marine exploration, and airborne platforms.
To overcome these challenges, the team innovatively replaced mechanical pumps with a multi-needle corona discharge Electrohydrodynamics (EHD) pump, eliminating moving parts and reducing system volume to Ø130 mm × 300 mm. Using a self-developed non-invasive point schlieren velocimetry technique, the team measured a gas flow velocity of 1.27 m/s inside the laser cavity. Operating at 100 Hz, the system achieved a gas refresh rate of 6.35, delivering pulse energy exceeding 2 mJ while maintaining outstanding energy stability, with a relative standard deviation as low as 1%.
Notably, the researchers observed a unique explosive transition behavior in the laser’s pulse energy under certain conditions. Through complex photochemical reaction analysis of the XeCl excimer network, they linked this phenomenon to a threshold-driven burst in photon flux, uncovering the microscopic mechanism behind macroscopic laser performance shifts.
Furthermore, the team developed an interpretable machine learning model capable of predicting energy transitions across a wide range of operating parameters.
This tool offers valuable support for the optimization and control of ultra-compact excimer laser systems in practical applications.
END
Electrohydrodynamics pump and machine learning enable portable, high-performance excimer laser
2025-11-07
ELSE PRESS RELEASES FROM THIS DATE:
UniSA leads national pilot to improve medication safety in aged care
2025-11-07
In a national effort to make medicines safer for older Australians, the University of South Australia is calling for aged care providers and pharmacists to join a new pilot study to assess medication safety and management in residential aged care.
Developed in response to the Royal Commission into Aged Care Quality and Safety, the study will use the new PHARMA-Care National Quality Framework to evaluate medication management and clinical services provided by pharmacists, included as part of the Australian Government’s $350 million Aged Care On-site ...
Engineered biochar emerges as a powerful, affordable tool to combat water pollution
2025-11-07
A new comprehensive study highlights the remarkable potential of engineered biochar, a carbon-rich product derived from plant and waste biomass, for addressing one of the world’s most stubborn environmental problems: the co-contamination of water by heavy metals and organic pollutants. This joint effort, led by researchers at Guizhou University with collaborators from across China, reveals how strategic modifications to biochar’s structure dramatically expand its ability to capture and remove hazardous substances from wastewater, making it a viable, sustainable solution ...
City of Hope appoints leading lung cancer expert Dr. Christine M. Lovly to head national thoracic oncology program
2025-11-07
LOS ANGELES — City of Hope®, one of the largest and most advanced cancer research and treatment organizations in the United States with its National Medical Center ranked among the nation’s top cancer centers by U.S. News & World Report, today announced that internationally recognized physician-scientist Christine M. Lovly, M.D., Ph.D., F.A.S.C.O., will spearhead the development of its new national thoracic oncology program, furthering City of Hope’s mission to deliver exceptional multidisciplinary care and transformative research for patients with lung cancer. Dr. Lovly’s appointment is effective Jan. 1.
Dr. ...
Green space to fewer hospitalizations for mental health
2025-11-07
Higher levels of greenness are associated with lower risks of hospital admissions for mental disorders, finds an analysis of data from seven countries over two decades, published in the BMJ’s climate issue today.
Local greenness was associated with a 7% reduction in hospital admissions for all cause mental disorders, with stronger associations for substance use disorders (9%), psychotic disorders (7%), and dementia (6%). However, associations varied across countries and disorders. For example, Brazil, Chile, and Thailand showed consistent ...
Supervised exercise improves strength and physical performance in patients with advanced breast cancer
2025-11-07
Lisbon, Portugal: Aerobic and resistance exercise can significantly improve physical performance in patients living with metastatic breast cancer according to new results presented at the Advanced Breast Cancer Eighth International Consensus Conference (ABC8) today (Friday).
Anne May, Professor of Clinical Epidemiology of Cancer Survivorship at the University Medical Center (UMC) Utrecht and the Netherlands Cancer Institute, The Netherlands, presented new results [1] from the PREFERABLE-EFFECT study [2] that showed a nine-month programme of supervised exercise improved muscle mass and muscle strength, particularly in the arms and ...
NIH award to explore improved delivery systems for school-based substance use prevention and treatment programs
2025-11-06
DETROIT – Researchers at Wayne State University will work with Michigan agencies and education partners to improve access to school-based substance use prevention and treatment programs for adolescents who are at risk of substance misuse and substance use disorders (SUDs).
The research will be funded by a two-year, $883,176 R61 exploratory grant from the National Institute on Drug Abuse of the National Institutes of Health. Dr. Andria B. Eisman, associate professor of community health in Wayne State’s College of Education, will lead the study, “Reducing Addiction through ...
Woodpeckers grunt like tennis stars when drilling
2025-11-06
Woodpeckers pack a punch., pounding wood with extreme force and experiencing decelerations of up to 400g. Now Nicholas Antonson, Matthew Fuxjager, Stephen Ogunbiyi, Margot Champigneulle and Thomas Roberts (all at Brown University, USA) and bird song expert Franz Goller (University of Münster, Germany) reveal in Journal of Experimental Biology that drilling woodpeckers turn themselves in hammers birds by bracing their head, neck, abdomen and tail muscles to hold their bodies rigid when they pound on wood, driving each impact with the hip flexor and front neck muscles.
In addition, ...
International research team awarded €10 million ERC Synergy Grant to revolutionize drug delivery
2025-11-06
A team of four leading scientists from four European universities has been awarded a prestigious Synergy Grant of approximately €10 million by the European Research Council (ERC) for the project CARAMEL (Covalent Chaotropic Membrane Transport for Biotherapeutic Delivery). The project aims to overcome one of the biggest challenges in medicine: efficiently delivering modern biotherapeutics, such as peptides and proteins, into cells—a key hurdle in developing new treatments for diseases like cancer.
The CARAMEL project team comprises four principal investigators from leading European universities: Dr. ...
Research Spotlight: State-of-the-art 7 Tesla MRI reveals how the human brain anticipates and regulates the body’s needs
2025-11-06
Jiahe Zhang, PhD, of the Department of Psychiatry at Mass General Brigham, is the lead author of the paper published in Nature Neuroscience, “Cortical and subcortical mapping of the human allostatic-interoceptive system using 7 Tesla fMRI.”
Lisa Feldman Barrett, PhD, and Marta Bianciardi, PhD, of the Department of Radiology at Mass General Brigham are co-senior authors. Barrett is also affiliated with the Department of Psychiatry at Mass General Brigham.
Q: How would you summarize your study for a lay audience?
Using an ultra-high-resolution imaging technology called 7 Tesla functional MRI (fMRI) on human participants, we mapped how different parts of the brain work together. ...
Rice and Houston Methodist researchers to study brain-implant interface with Dunn Foundation award
2025-11-06
HOUSTON – (Nov. 6, 2025) – A team of researchers from Rice University and the Houston Methodist Research Institute has received a John S. Dunn Foundation Collaborative Research Award through the Gulf Coast Consortia to study how the brain responds over time to neural implants.
The project brings together expertise in materials science, neuroscience and clinical medicine and is led by Rice researchers Yimo Han, assistant professor of materials science and nanoengineering, and Chong Xie, associate professor of electrical and computer engineering, together with Dr. Damiano Barone, assistant professor in the Department of Neurosurgery at the Houston Methodist ...