New Laser Imaging Technique Unlocks Nanoscale Heat and Charge Transport in Diamond
A new laser-based imaging technique has been developed to study nanoscale heat and charge transport in ultrawide-bandgap semiconductors like diamond. By utilising a tabletop deep-ultraviolet (DUV) laser, researchers have achieved spatial resolutions of 287 nanometres, enabling detailed analysis of diamond’s transport behaviours. This breakthrough addresses the limitations of visible-light imaging methods and could revolutionise the design of high-efficiency power electronics and communication systems.
Study Reveals Unique Capabilities of the DUV Microscope
According to the study published in Physical Review Applied, the microscope generates high-energy DUV light to create interference patterns on the material’s surface, forming sinusoidal heating profiles. Researchers at JILA, led by Margaret Murnane and Henry Kapteyn, developed this innovative technique in collaboration with graduate students Emma Nelson, Theodore Culman and Brendan McBennett and industry partners from 3M. The study overcomes significant challenges in imaging ultrawide-bandgap materials, which cannot be probed with conventional visible light due to their large energy gaps.
Development and Validation of the DUV System
As reported by phys.org, the team designed the system by converting an 800-nanometre laser pulse into shorter wavelengths through nonlinear crystals. This process created a powerful DUV light source capable of forming nanoscale transient gratings on a material’s surface. The system was tested and refined over several years, including during the COVID-19 pandemic. Nelson emphasised that achieving precise alignment in the system was critical to generating accurate nanoscale patterns.
Breakthroughs in Diamond Analysis
The system was validated using thin gold films, where it successfully measured material properties such as elasticity and density. Once confirmed, the microscope was applied to diamond, allowing researchers to observe charge carrier diffusion and nanoscale heat transport without altering the material. The study revealed complex behaviours like ballistic and hydrodynamic effects, challenging traditional models of heat flow.
Implications for Advanced Electronics
The insights gained could shape the future of electronics by enhancing the understanding of nanoscale transport in ultrawide-bandgap materials. Researchers believe this innovation will advance the development of power electronics, communication systems, and quantum technologies.
For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.
A team of scientists has developed a new kind of self-healing circuit board that stays functional even after severe mechanical damage and can be reshaped or recycled entirely using heat. Infused with liquid metal and built using a polymer known as vitrimer, the new circuit boards could dramatically cut electronic waste and transform the durability of consumer electronics. Vitrimer retains the strength of traditional thermoset materials while allowing flexibility and repair, making it possible to reconfigure damaged boards without compromising electrical performance.
As per a study published in Advanced Materials on June 1, the boards were created by blending vitrimer with just 5% by volume of liquid metal droplets. This combination nearly doubled the material’s strain-at-break, or stretchability, compared to vitrimer alone. The embedded droplets are flexible as well, serving as flexible conductors in place of metal wiring used in traditional boards. Using a rheometer, tests showed the material was able to return to its original shape after heat-induced deformation ranging from 170°C to 200°C, which conventional epoxy-based thermosets cannot achieve.
Engineers also demonstrated that the material remains highly conductive and can recover its electrical function after being damaged. “Modern circuit boards simply cannot do this,” said Josh Worch, co-lead author of the study. His team designed the dynamic composite with the aim of building a circular economy around electronics. The design addresses a major environmental concern: most circuit boards today use thermosets that cannot be recycled and end up in landfills.
Electronic waste has more than doubled in 12 years, from 34 to 62 billion kilograms, as noted in a 2024 UN report. Despite containing valuable metals like gold, current boards are difficult to break down and reclaim due to the permanent nature of thermosetting plastics. The new vitrimer-based design, by contrast, allows for easy separation and reuse of materials. “Even if the board is damaged,” said Michael Bartlett, another co-lead author, “electrical performance will not suffer.”
More work needs to be done to improve the recovery of some elements, but the advance is a big step toward greener electronics, the researchers say. The technology could one day be in many different types of devices, from phones and laptops to wearables and TVs, changing the way devices are made, operated, and recycled.
For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.
German Scientists at GSI Helmholtzzentrum für Schwerionenforschung found a new superheavy isotope, 257Sg, named Seaborgium, which reveals unexpected details about the stability and nuclear fission. This study was published in Physical Review Letters and describes how this isotope, made by fusing chromium-52 with lead-206, survived for 12.6 milliseconds, longer than usual. The rare longevity and decay into 253Rf provide new indications of how K-quantum numbers or angular momentum impact the fission resistance. The findings fill in the gaps and give us an understanding of the effects of quantum shells in superheavy nuclei, which is crucial for preventing immediate disintegration.
Challenging Traditional Views on K-Quantum Numbers and Fission
As per the study by GSI, it challenges conservative views on how K-quantum numbers impact fission. Previously, it was found that the higher K values lead to greater fission hindrance, but after getting the findings from the GSI team, a more complex dynamic emerged. They found that K-quantum numbers offer hindrance to fission, but it is still ot known that it is how much, said Dr. Pavol Mosat, the study’s co-author.
Discovery of First K-Isomeric State in Seaborgium
An important milestone is the identification of the first K-isomeric state in seaborgium. In 259Sg, the scientists found that the conversion of the electron signal occurs 40 microseconds after the nuclear formation. This is clear evidence of the high angular momentum K-isomer. These states have longer lifetimes and friction in fission in a more effective way than their ground-state counterparts.
Implications for the Theorised Island of Stability
This discovery by the scientists provides key implications for the Island of stability, which has long been theorised. It is a region where superheavy elements could have comparatively long half-lives. If K-isomers are present in the still undiscovered elements such as 120, they can enable scientists in the detection of nuclei that would otherwise decay in just under one microsecond.
Synthesising 256Sg with Ultra-Fast Detection Systems
This team of German Scientists under GSI is now aiming to synthesise 256Sg, which might decay quicker than observed or predicted. Their success is dependent on the ultra-fast detection systems created by GSI, which are capable of capturing events within 100 nanoseconds. This continued research by the team may help in reshaping the search and studying the heaviest elements in the periodic table.
For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.
257Sg, seaborgium, K-isomer, superheavy, elements, nuclear stability, fission, GSI, TASCA, Physical Review Letters, element 120, island of stability
-
Sports3 years ago‘Storybook stuff’: Inside the night Bryce Harper sent the Phillies to the World Series
-
Sports1 year agoStory injured on diving stop, exits Red Sox game
-
Sports2 years agoGame 1 of WS least-watched in recorded history
-
Sports2 years agoMLB Rank 2023: Ranking baseball’s top 100 players
-
Sports4 years ago
Team Europe easily wins 4th straight Laver Cup
-
Environment2 years agoJapan and South Korea have a lot at stake in a free and open South China Sea
-
Sports2 years agoButton battles heat exhaustion in NASCAR debut
-
Environment2 years agoGame-changing Lectric XPedition launched as affordable electric cargo bike