Articles tagged with Applied Optics
A study led by Przemyslaw Nogly at PSI has detailed insight into the mechanism of a light-driven chloride pump in bacteria, revealing how light energy converts to kinetic energy and transports chloride ions inside cells. The pump uses two molecular gates to ensure one-way transport, with the process taking around 100 milliseconds.
Researchers at Penn State developed a computational optimizer to design a 3D unit cell with cube-shaped cavities that enables asymmetric transmission of linearly polarized light across a wide frequency range. The optimized design was successfully fabricated and tested, demonstrating robust optical properties.
Quantum entanglement is studied in attosecond laser laboratory experiments, where neutral hydrogen molecules are ionized using an attosecond pulse. The experiment reveals a competition between vibrational coherence and entanglement, demonstrating the breakdown of local realism.
Researchers at UMass Amherst developed a gear-shaped photonic crystal microring that increases light-matter interactions without sacrificing optical quality. The device boasts an optical quality factor 50 times better than previous records.
Femtosecond laser precision engineering enables micro/nano-structure creation with high resolution and dry processing. Key challenges include achieving small heat affected zones and ensuring sufficient processing speeds for industrial needs.
Scientists at Chalmers University of Technology discovered a way to create a stable resonator using two parallel gold flakes in a salty aqueous solution. The structure can be manipulated and used as a chamber for investigating materials and their behavior, with potential applications in physics, biosensors, and nanorobotics.
On-chip frequency shifters in the gigahertz range enable precise color shifting for high-speed optical communication. This innovation has significant implications for the development of quantum computers and future network infrastructure.
Researchers at Columbia University have developed a compact and power-efficient phase modulator that can control the phase of visible light waves. This breakthrough enables large-scale integration of devices for applications such as chip-scale LIDAR, AR/VR goggles, and quantum information processing chips.
The new method enables faster prototyping of customized optical components for various applications, including eyewear and telescopes. It achieves extremely smooth surfaces using basic equipment found in most labs.
Researchers at POSTECH demonstrate experimental demonstration of negative refraction at visible frequency for the first time, achieving high-resolution images beyond diffraction limit. The study uses a vertical hyperbolic metamaterial to exhibit negative refraction in entire visible domain, overcoming limitations of conventional materi...
The Stanford Computational Imaging Lab has developed a technique to reduce speckling distortion in holographic displays, while another paper proposes a method to realistically represent the physics of 3D scenes. The new system uses neural networks and camera-in-the-loop calibration for real-time adjustments.
Researchers at Harvard SEAS developed a new silicon coating that counters chromatic dispersion in transparent materials like glass. The ultra-thin coating uses precisely designed silicon pillars to capture and re-emitting red light, allowing slower-moving blue light to catch up.
Researchers have developed a method to study proteins at their physiological temperatures by applying microscopic pulsed heating. They found that a critical protein complex regulating cell motility and morphology exhibits cooperative regulation of actin-myosin interaction by drebrin E, which is temperature-dependent.
A new buoy-borne underwater dark field imaging system has been developed to expand marine plankton monitoring capabilities. The system features a high-quality imager with embedded computer and cloud computing-based deep learning algorithms for object detection and quantification.
La Trobe University researchers developed a smart microscope slide that can detect cancer cells using enhanced color contrast. The technology uses nanoscale modifications to distinguish cancer cells from normal tissue, making early diagnosis more efficient.
Researchers at KAUST developed bright red indium gallium nitride microlight-emitting diodes that emit light across the entire visible-light spectrum. The devices have a high output power of 1.76 milliwatts per square millimeter, outperforming previous devices.
Researchers at the University of Rochester have developed a time-domain single-pixel imaging technique that detects ultrafast light pulses with high accuracy and speed. The new method can capture 5 femtojoule pulses with temporal sampling sizes as low as 16 femtoseconds, outperforming existing methods.
Researchers at Chalmers University of Technology have developed a unique optical amplifier that offers high performance, is compact enough to integrate into a chip just millimeters in size, and does not generate excess noise. This breakthrough technology has the potential to revolutionize both space and fiber communication.
A team of researchers at Aarhus University aims to develop an optical sensor using terahertz light to decode the direction of tiny magnetic 'tornadoes' called skyrmions. Skyrmions offer a promising candidate for future bits in computer technology, requiring less power and generating less heat than current methods.
Researchers developed a precise stopwatch to count single photons, enhancing imaging technologies like forest mapping and disease diagnosis. The new time lens technology improves photon timing resolution by orders of magnitude.
Researchers at Harvard SEAS have demonstrated a new way to control polarized light using metasurfaces, enabling holographic images with an unlimited number of polarization states and manipulation in virtually infinite directions. This advancement could lead to applications in imaging, microscopes, displays, and astronomy.
Researchers at Aalto University have discovered that fibrous red phosphorous, when electrons are confined in its one-dimensional sub-units, shows large optical responses. The material demonstrates giant anisotropic linear and non-linear optical responses, as well as emission intensity.
Researchers developed a result-diversified automatic design method for freeform optics, generating various three-mirror systems with high imaging qualities. The method provides a brand new thought for fully automatic optical design, enabling exploration of solution spaces and changing the working mode in engineering applications.
Researchers from Aalto University have successfully combined virus particles, protein cages, and nanoparticles to create novel crystalline materials with tunable properties. These biohybrid superlattices exhibit enhanced optical, magnetic, electronic, and catalytic features.
The new center will foster NASA-related developments based on optical sciences and technology, enhancing the national aerospace science workforce. CAOSS will also develop partnerships with industry, NASA research centers, federal laboratories, and minority-serving colleges.
The University of California and Caltech are designing a 30-meter telescope called the California Extremely Large Telescope (CELT) to study distant galaxies and star formation. The telescope will have a segmented primary mirror made up of 1,080 small hexagonal mirrors, and its cost is estimated to be around $500 million.