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Laser harmony

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IMAGE: The laser constructed by the team of Dr. Stepanenki can be tuned in a similar way to tuning the radio to catch your favorite station. Only with femtosecond precision. PhD.
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Credit: IPC PAS/Grzegorz Krzyzewski
Would you like to capture a chemical transformation inside a cell live? Or maybe revolutionize microchips production by printing paths in a layer that has a thickness of just 100 nanometers? These and many other goals can now be achieved with the latest femtosecond laser created by a team of scientists led by Dr. Yuriy Stepanenko.
These days, there is a multitude of laser light sources. They each have their characteristics and different applications, such as observing stars, treating illnesses, and surface micro-machining. Our goal is to develop new ones, says Yuriy Stepanenko, head of the team of Ultrafast Laser Techniques at the Institute of Physical Chemistry of the Polish Academy of Sciences. We deal with sources ....

Mona Lisa , Bernard Piechal , Yuriy Stepanenko , Journal Of Lightwave Technology , Ultrafast Laser Techniques , Physical Chemistry , Polish Academy , Harmonic Mode Locking , Widely Tunable Repetition Rate , Lightwave Technology , Chemistry Physics Materials Sciences , Medicine Health , Technology Engineering Computer Science , மோனா லிசா , பெர்னார்ட் பைச்சல் , யூரி ஸ்தெப்பானெங்கோ , இதழ் ஆஃப் லைட்வேவ் தொழில்நுட்பம் , உடல் வேதியியல் , போலீஷ கலைக்கழகம் , ஹார்மோனிக் பயன்முறை பூட்டுதல் , லைட்வேவ் தொழில்நுட்பம் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் , மருந்து ஆரோக்கியம் , தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் ,

Preserving workers' hearing health by improving earplug efficiency

Credit: ÉTS
Noise exposure accounts for 22% of worldwide work-related health problems. Excessive noise not only causes hearing loss and tinnitus, but also increases the risk of cardiovascular diseases. To provide protection, workers normally wear earplugs. However, commonly available earplugs are often uncomfortable, since they don t fit everyone s ears equally well.
How could we improve the comfort and effectiveness of these earplugs? What aspects of the ear canal must be taken into account? To answer these questions, researchers from the École de technologie supérieure (ÉTS University) and the Institut de recherche en santé et sécurité du travail (IRSST) analyzed the varying structure of ear canals to find a correlation between their shapes and the effectiveness of three commonly-used models of earplugs. ....

Wits University , Hearing Speech , Technology Engineering Computer Science , Biomedical Environmental Chemical Engineering , ட்ச் பல்கலைக்கழகம் , கேட்டல் பேச்சு , தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் , உயிர் மருத்துவ சுற்றுச்சூழல் இரசாயன பொறியியல் ,

Detecting COVID-19 antibodies in 10-12 seconds

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IMAGE: An image of the COVID-19 test chip made by aerosol jet nanoparticle 3D printing.
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Credit: Advanced Manufacturing and Materials Lab, College of Engineering, Carnegie Mellon University
PITTSBURGH Researchers at Carnegie Mellon University report findings on an advanced nanomaterial-based biosensing platform that detects, within seconds, antibodies specific to SARS-CoV-2, the virus responsible for the COVID-19 pandemic. In addition to testing, the platform will help to quantify patient immunological response to the new vaccines with precision.
The results were published this week in the journal
Advanced Materials. Carnegie Mellon s collaborators included the University of Pittsburgh (Pitt) and the UPMC. ....

Jiang Gao , Rahul Panat , Mazahar Ali , Carnegie Mellon , Carnegie Mellon University , University Of Pittsburgh Pitt , College Of Engineering , College Of Engineering At Carnegie Mellon University , Hillman Cancer Center , Materials Lab , Shou Jiang Gao , Cancer Center , Advanced Manufacturing , Medicine Health , Technology Engineering Computer Science , Biomedical Environmental Chemical Engineering , Mechanical Engineering , Nanotechnology Micromachines , Research Development , ஜியாங் கொ , ராகுல் பனாட் , அசாஹா அலி , கார்னகி மெலந் , கார்னகி மெலந் பல்கலைக்கழகம் , பல்கலைக்கழகம் ஆஃப் பிட்ஸ்பர்க் குழி , கல்லூரி ஆஃப் பொறியியல் ,

Entangling electrons with heat

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IMAGE: False-colour electron microscope image of the sample, the green layers are graphene on top of the grey superconductor. The blue metal electrodes are used to extract the entangled electrons
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Credit: Aalto University
A joint group of scientists from Finland, Russia, China and the USA have demonstrated that temperature difference can be used to entangle pairs of electrons in superconducting structures. The experimental discovery, published in
Nature Communications, promises powerful applications in quantum devices, bringing us one step closer towards applications of the second quantum revolution.
The team, led by Professor Pertti Hakonen from Aalto University, has shown that the thermoelectric effect provides a new method for producing entangled electrons in a new device. Quantum entanglement is the cornerstone of the novel quantum technologies. This concept, however, has puzzled many physicists over the years, including Alb ....

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Perceiving prosthesis as lighter thanks to neurofeedback

Transmitting sensory signals from prostheses to the nervous system helps leg amputees to perceive prosthesis as part of their body. While amputees generally perceive their prostheses as heavy, this feedback helps them to perceive the prostheses as significantly lighter, ETH researchers have shown. ....

Stanisa Raspopovic , Department Of Health Sciences , Health Sciences , Medicine Health , Orthopedic Medicine , Trauma Injury , Technology Engineering Computer Science , துறை ஆஃப் ஆரோக்கியம் அறிவியல் , ஆரோக்கியம் அறிவியல் , மருந்து ஆரோக்கியம் , எலும்பியல் மருந்து , அதிர்ச்சி காயம் , தொழில்நுட்பம் பொறியியல் கணினி அறிவியல் ,