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Continuous non-invasive glucose sensing on the horizon with the development of a new optical sensor.

Researchers have developed a miniaturized optical sensor that can detect glucose levels in human blood plasma with comparable sensitivity to laboratory-based sensors. The device operates wirelessly using a coin battery and has demonstrated its viability in detecting glucose levels between 50-400mg/dL.

SourceARC Centre of Excellence for Transformative Meta-Optical Systems·JournalAdvanced Sensor Research·TypeExperimental study·DateMar 19, 2024

Would the highly sensitive transparent ultrasound transducer revolutionize biomedical imaging technology?

A novel transparent ultrasonic transducer (TUT) developed by POSTECH researchers offers exceptional optical transparency and maintains acoustic performance, surpassing conventional limitations. This breakthrough enables high-depth-to-resolution ratios for ultrasound imaging, with applications in various medical devices and fields.

SourcePohang University of Science & Technology (POSTECH)·JournalNature Communications·DateMar 10, 2024

Broadband buzz: Periodical cicadas' chorus measured with fiber optic cables

A new proof-of-concept study demonstrates the use of distributed fiber optic sensing to detect and analyze the sound of periodical cicadas. The technology shows promise for charting the populations of these famously ephemeral bugs, with potential applications in monitoring insect abundance across seasons and years.

SourceEntomological Society of America·JournalJournal of Insect Science·TypeExperimental study·DateNov 30, 2023

A new way to create germ-killing light

Researchers at Osaka University have created a new optical device that generates deep-UV light using second harmonic generation, killing germs while remaining harmless to humans. The device is more efficient and compact than previous options, paving the way for commercial applications.

SourceOsaka University·JournalApplied Physics Express·TypeExperimental study·DateSep 11, 2023

Controlling the source of electromagnetic waves enables control of the period of laser-induced periodic surface structures (LIPSS)

Controlling the source of electromagnetic waves enables control of the period of laser-induced periodic surface structures (LIPSS), increasing fabrication speed and accuracy. Researchers discovered that varying the substrate material affects the LIPSS period, allowing for more precise manipulation.

SourceHigher Education Press·JournalFrontiers of Optoelectronics·DateAug 15, 2023

Scientists edge toward scalable quantum simulations on a photonic chip

Researchers from the University of Rochester have made an important step toward developing computers advanced enough to simulate complex natural phenomena at the quantum level. They developed a new chip-scale optical quantum simulation system that could help make such a system feasible, using photonics-based synthetic dimensions.

SourceUniversity of Rochester·JournalNature Photonics·TypeComputational simulation/modeling·DateJun 29, 2023

New developments for high-speed internet from space enabled by coherent modulation and adaptive optics

A team of researchers demonstrated a 1 Terabit per second line-rate over a wireless distance of 53.42 km using advanced optical modulation formats. Adaptive optics mitigation technique improved received optical power, enabling high data-rates despite atmospheric turbulence.

The Good Fight: Advance in flexible photodetector could improve monitoring of greenhouse gases

Researchers have developed flexible photodetectors that can detect visible to long-wave infrared radiation, covering the full spectrum of greenhouse gases without complex optical components. The new detectors are simple and cost-effective to make, with production at room temperature.

SourceARC Centre of Excellence for Transformative Meta-Optical Systems·JournalAdvanced Functional Materials·TypeExperimental study·DateJun 20, 2023

Android-based application for photoacoustic tomography image reconstruction

A mobile application utilizing Python and a single-element ultrasound transducer has been developed for photoacoustic tomography (PAT) image reconstruction. The application successfully reconstructs high-quality images with signal-to-noise ratio values above 30 decibels, making it suitable for point-of-care diagnosis in low-resource se...

SourceSPIE--International Society for Optics and Photonics·JournalJournal of Biomedical Optics·DateApr 27, 2023

Scientists open door to manipulating ‘quantum light’

Researchers at the University of Sydney and the University of Basel have demonstrated the ability to manipulate and identify small numbers of interacting photons with high correlation. This achievement represents a significant step towards advancing medical imaging and quantum computing technologies.

SourceUniversity of Sydney·JournalNature Physics·TypeExperimental study·DateMar 20, 2023

CityU scholars unify color systems using prime numbers

Researchers from City University of Hong Kong developed a unified colour system based on prime numbers, called C<sub>235</sub>, which can represent various colours more efficiently than existing systems like RGB and CMYK. The new colour system has potential applications in designing energy-saving LCD systems and colourizing DNA codons.

SourceCity University of Hong Kong·JournalLight Science & Applications·TypeComputational simulation/modeling·DateMar 2, 2023

Researchers create first supermode optical resonator

The new optical resonator developed by Capasso's team provides precise control over the mode of light and enables multi-mode coupled light to exist within the resonator. This breakthrough could influence how resonators are understood and open doors for new capabilities, including fundamental physics experiments and manipulation of mate...

GHz burst mode femtosecond laser pulses can create unique two-dimensional (2D) periodic surface nanostructures

Researchers demonstrate the ability of GHz burst mode femtosecond laser pulses to create unique two-dimensional (2D) periodic surface nanostructures on silicon substrates. The GHz burst mode enhances ablation efficiency and quality compared to conventional single-pulse mode, enabling the formation of distinctive 2D LIPSS.

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateJan 24, 2023

Nanoparticles make it easier to turn light into solvated electrons

Scientists at Rice University, Stanford University, and UT Austin have developed a mechanism to generate solvated electrons through plasmon resonance, making it easier to turn light into these clean, zero-byproduct chemicals. This breakthrough could lead to new ways of driving chemical reactions and reducing greenhouse gas emissions.

SourceRice University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJan 18, 2023

A message that resonates

Researchers at the University of Tsukuba have developed an optoelectronic resonator that enhances the sensitivity of an electron pulse detector, allowing for ultrafast electronic characterization of proteins or materials. This breakthrough may aid in the study of biomolecules and industrial materials.

SourceUniversity of Tsukuba·JournalACS Photonics·DateDec 14, 2022

Optical magic: New flat glass enables optimal visual quality for augmented reality goggles

Researchers at Columbia University have invented a flat lens that exclusively focuses light of a selected color, appearing transparent until illuminated with the correct wavelength. The device overcomes challenges in conventional AR glasses, enabling unattenuated and undistorted vision of both real-world scenes and contextual information.

SourceColumbia University School of Engineering and Applied Science·JournalLight Science & Applications·DateSep 28, 2022

Arrayed chirality

A team of researchers from Osaka University used computer simulations to model the optical radiation force distribution induced by an interference pattern, enabling the fabrication of nano-sized structures with chiral properties. This technology has the potential to create new optical devices, such as chirality sensors.

SourceOsaka University·JournalScientific Reports·TypeComputational simulation/modeling·DateSep 28, 2022

Combing light with sharper teeth

The study reveals that noise sources in the micro resonator can cause the lines to be narrower than previously thought, enabling more precise measurements. By understanding this phenomenon, researchers can develop even more accurate devices, such as instruments measuring signals at light-years distances.

SourceChalmers University of Technology·JournalNature Communications·TypeExperimental study·DateSep 1, 2022

Advances in the design and manufacturing of novel freeform optics

Freeform optics have revolutionized the way we approach precision optical systems, enabling superior imaging in compact packages. Researchers have summarized the present state of art in advances, design methods, manufacturing, metrology, and applications. Key challenges include standard definitions, optimization complexities, and measu...

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateJul 7, 2022

Seeing photovoltaic devices in a new light

A team of researchers at Osaka University measured the photovoltaic properties of antimony sulfiodide:sulfide devices and discovered a novel effect. They found that changing the color of incident light from visible to ultraviolet induced a reversible change in output voltage, while leaving current unchanged.

SourceOsaka University·JournalAdvanced Functional Materials·TypeExperimental study·DateJul 5, 2022

Making colors out of gold and DNA

Researchers at Aalto University developed a method to produce colors using gold nanocylinders suspended in a gel, controlled by custom DNA molecules. The technique uses polarized light to transmit specific colors depending on the orientation of the nanoparticles.

SourceAalto University·JournalAdvanced Functional Materials·DateMay 31, 2022

Rice ‘metalens’ could disrupt vacuum UV market

Researchers at Rice University have created a 'metalens' that transforms long-wave UV-A into a focused output of vacuum UV radiation. The technology uses nanophotonics to impart a phase shift on incoming light, redirecting it and generating VUV without the need for specialized equipment.

SourceRice University·JournalScience Advances·TypeExperimental study·DateMay 5, 2022

Stanford engineers enable simple cameras to see in 3D

Researchers at Stanford University have developed a new approach to enable standard image sensors to capture light in three dimensions. The system uses acoustic resonance and piezoelectric properties of lithium niobate to modulate light, allowing for high-performance lidar capabilities in compact devices.

SourceStanford University·JournalNature Communications·DateMar 28, 2022

Strong magnets put new twist on phonons

Rice University scientists discovered that strong magnetic fields can manipulate the material's optical phonon mode, a phenomenon previously unseen. The effects were much stronger than expected by theory, revealing a new way of controlling phonons.

SourceRice University·JournalPhysical Review Letters·TypeExperimental study·DateFeb 15, 2022