Beautiful Virgin Islands

Monday, Jul 14, 2025

Chinese-led team claims physics breakthrough

Chinese-led team claims physics breakthrough

Generation of powerful electron beam could could rewrite Einstein theory on photoelectric effect.
A Chinese-led research team has generated powerful electron beams with unprecedented efficiency, a scientific breakthrough that could rewrite Albert Einstein's Nobel Prize winning theory, according to a new paper.

In March 1905, Einstein published a paper explaining the photoelectric effect. When light falls on specific material, electrons might be emitted from its surface. This phenomenon has helped humans understand the quantum nature of light and electrons.

A century passed and the theory became a foundation for many modern technologies that rely on light detection or electron-beam generation. High-energy electron beams have been widely used to analyse crystal structures, treat cancer, kill bacteria and machine alloy.

However, most of the materials that convert photons into electrons, known as photocathodes, were discovered about 60 years ago. All photocathodes a defect: the electrons they generate are dispersed in angle and speed.

By using a new material, He Ruihua, of Westlake University in Hangzhou, in China's eastern Zhejiang province, and his team overcame the defence and acquired concentrated electrons. The finding by researchers in China, Japan and the US could raise the energy level of an acquired electron-beam by at least an order of magnitude.

The team's paper was published in the peer-reviewed journal Nature on March 8.

They used strontium titanate (SrTiO3), a quantum material with myriad interesting properties. Electron beams obtained after exciting SrTiO3 generated electron beams with consistency - also called coherence.

"Coherence is important to the beam, it concentrates the flow like a pipe on the tap. Without the pipe, water will spray everywhere when the tap is wide open. Without coherence, electrons will scatter," said Hong Caiyun, an author of the paper.

"With the coherence we acquired, we can increase the beam intensity while the beam could maintain its direction."

The photoemission intensity of SrTiO3 is greatly enhanced.

"This exceptional performance suggests novel physics beyond the well-established theoretical framework for photoemission," Hong said.

The discovery has driven the team to find a new theory to explain the unparalleled coherence.

"We came up with an explanation as a supplement to Einstein's original theoretical framework. It's in another paper which is under review right now," Professor He said.

Co-author Arun Bansil of Northeastern University in the US, hailed the finding in a Phys.org report.

"This is a big deal because there is no mechanism within our existing understanding of photoemission that can produce such an effect. In other words, we don't have any theory for this, currently, so it is a miraculous breakthrough in that sense," Bansil said.

According to Hong, the new theory predicts a host of materials with the same photoemissive properties as SrTiO3.

"SrTiO3 presents the first example of a fundamentally new class of photocathode quantum materials. It opens new prospects for applications that require intense electron beams," she said.

The research team did not respond, either in its paper or in interviews, to whether high-energy electron beams would be used in weapons.

Professor He said the discovery emerged from their focus on a traditional technology, angle resolved photoemission spectroscopy (Arpes). Arpes is widely used to study electron structures in solid materials. It measures the energy and emission angle of photoelectrons.

"In the past few decades, physics and material scientists mainly used Arpes to study the electronic structures related to the optical, electrical and thermal properties. Our team adapted an unconventional configuration of Arpes, and measured another part that's more related to the photoelectric effect," He said.

"During the test we found the unusual photoemission properties of SrTiO3. Previously, quantum oxide materials represented by strontium titanate were mainly studied as substitutes for semiconductors, and are currently used in the fields of electronics and photocatalysis.

"The material will definitely be promising in the field of photocathode in the future."

Newsletter

Related Articles

Beautiful Virgin Islands
0:00
0:00
Close
Air India Pilot’s Mental Health Records Under Scrutiny
Google Secures Windsurf AI Coding Team in $2.4 Billion Licence Deal
Jamie Dimon Warns Europe Is Losing Global Competitiveness and Flags Market Complacency
South African Police Minister Suspended Amid Organised Crime Allegations
Nvidia CEO Claims Chinese Military Reluctance to Use US AI Technology
Hong Kong Advances Digital Asset Strategy to Address Economic Challenges
Australia Rules Out Pre‑commitment of Troops, Reinforces Defence Posture Amid US‑China Tensions
Martha Wells Says Humanity Still Far from True Artificial Intelligence
Nvidia Becomes World’s First Four‑Trillion‑Dollar Company Amid AI Boom
U.S. Resumes Deportations to Third Countries After Supreme Court Ruling
Excavation Begins at Site of Mass Grave for Children at Former Irish Institution
Iranian President Reportedly Injured During Israeli Strike on Secret Facility
EU Delays Retaliatory Tariffs Amid New U.S. Threats on Imports
Trump Defends Attorney General Pam Bondi Amid Epstein Memo Backlash
Renault Shares Drop as CEO Luca de Meo Announces Departure Amid Reports of Move to Kering
Senior Aides for King Charles and Prince Harry Hold Secret Peace Summit
Anti‑Semitism ‘Normalised’ in Middle‑Class Britain, Says Commission Co‑Chair
King Charles Meets David Beckham at Chelsea Flower Show
If the Department is Really About Justice: Ghislaine Maxwell Should Be Freed Now
NYC Candidate Zohran Mamdani’s ‘Antifada’ Remarks Spark National Debate on Political Language and Economic Policy
President Trump Visits Flood-Ravaged Texas, Praises Community Strength and First Responders
From Mystery to Meltdown, Crisis Within the Trump Administration: Epstein Files Ignite A Deepening Rift at the Highest Levels of Government Reveals Chaos, Leaks, and Growing MAGA Backlash
Trump Slams Putin Over War Death Toll, Teases Major Russia Announcement
Reparations argument crushed
Rainmaker CEO Says Cloud Seeding Paused Before Deadly Texas Floods
A 92-year-old woman, who felt she doesn't belong in a nursing home, escaped the death-camp by climbing a gate nearly 8 ft tall
French Journalist Acquitted in Controversial Case Involving Brigitte Macron
Elon Musk’s xAI Targets $200 Billion Valuation in New Fundraising Round
Kraft Heinz Considers Splitting Off Grocery Division Amid Strategic Review
Trump Proposes Supplying Arms to Ukraine Through NATO Allies
EU Proposes New Tax on Large Companies to Boost Budget
Trump Imposes 35% Tariffs on Canadian Imports Amid Trade Tensions
Junior Doctors in the UK Prepare for Five-Day Strike Over Pay Disputes
US Opens First Rare Earth Mine in Over 70 Years in Wyoming
Kurdistan Workers Party Takes Symbolic Step Towards Peace in Northern Iraq
Bitcoin Reaches New Milestone of $116,000
Biden’s Doctor Pleads the Fifth to Avoid Self-Incrimination on President’s Medical Fitness
Grok Chatbot Faces International Backlash for Antisemitic Content
Severe Heatwave Claims 2,300 Lives Across Europe
NVIDIA Achieves Historic Milestone as First Company Valued at $4 Trillion
Declining Beer Consumption Signals Cultural Shift in Germany
Linda Yaccarino Steps Down as CEO of X After Two Years
US Imposes New Tariffs on Brazilian Exports Amid Political Tensions
Azerbaijan and Armenia are on the brink of a historic peace deal.
Emails Leaked: How Passenger Luggage Became a Side Income for Airport Workers
Polish MEP: “Dear Leftists - China is laughing at you, Russia is laughing, India is laughing”
BRICS Expands Membership with Indonesia and Ten New Partner Countries
Weinstein Victim’s Lawyer Says MeToo Movement Still Strong
U.S. Enacts Sweeping Tax and Spending Legislation Amid Trade Policy Shifts
Football Mourns as Diogo Jota and Brother André Silva Laid to Rest in Portugal
×