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Spectral Control of Network Lasers Opens Opportunity for On-Chip Photonics
LONDON, Nov. 17, 2022 — Efficient spectral control of network lasers is possible and could lead to fast-switching, multifunctional light sources for on-chip photonic applications. Using experiments and mathematical models, researchers at Imperial College London demonstrated the ability to control the emission of network lasers, so that the laser emits only one desired color or color combination at a time. Network lasers are made from a mesh of nanoscale optical fibers that are fused together to form a web-like
Modeling Microsphere Effects on Interferometric Resolution
KASSEL, Germany, Nov. 10, 2022 — Though microspheres — microscale spherical particles that can be manufactured from natural and synthetic materials — are known to improve lateral resolution and enhance magnification in microscopic imaging, a generally accepted...
Gallium Nitride VCSEL Developer Inks Deal to Continue Joint Venture
WILMINGTON, Del., Oct. 24, 2022 — Ganvix Inc., a Delaware-based developer of gallium nitride (GaN) VCSELs, working with the Industrial Technology Research Institute (ITRI), a technology R&D institution based in Taiwan, completed development of its first blue GaN lasers. Upon the...
Laser Surface Modification Aims to Reduce Infection from Implants
WEST LAFAYETTE, Ind., Oct. 19, 2022 — To help prevent infections caused by orthopedic implants, Purdue University researchers developed a laser-assisted surface modification process that may improve the efficacy of the implanted device. Most ortho device-related infections occur because...
Nanoscale Imaging Captures Soft Matter in Vitro
BERKELEY, Calif., Oct. 17, 2022 — Researchers at Lawrence Berkeley National Laboratory (Berkley Lab) developed an imaging platform that enabled nondestructive spectroscopic imaging of soft materials with nanometer spatial resolution, under in vitro conditions and external stimuli....
Tool Path Optimization Bolsters Precision Machining of Freeforms
TOKYO, Oct. 12, 2022 — Researchers from Keio University developed a tool path generation method for driving an independently controlled fast tool servo (FTS) for freeform surface machining. Without necessity of trial and error, the method enabled rapid manufacturing of...
Nanofilms Optimize Raman Thermometry for Extreme Manufacturing
AMES, Iowa, Sept. 29, 2022 — Researchers at Iowa State University, Shenzhen University, and Shanghai University of Engineering Science demonstrated an approach to the thermal probing of nanomaterials in which the ratio of two resonance Raman peak intensities of a 2D material,...
Light Source Gives Quantum Info Processing a Sense of Direction
HARBIN, China, Sept. 21, 2022 — Researchers from Harbin Institute of Technology and Australian National University used bulk states in the continuum (BICs) to develop metasurfaces — doped with light-emitting molecules — that operate as compact sources of chiral light....
Nanotech, Deep Learning Combine to Detect Pediatric Tuberculosis
SEATTLE, Sept. 15, 2022 — A technique for diagnosing tuberculosis (TB) in children takes advantage of the optical properties of gold nanoparticles to detect the disease. The technique uses an artificial intelligence (AI) algorithm to enhance the sensitivity of the test....
Flow Cytometry Technique Shows Promise for Early Cancer Diagnosis
GUANGDONG, China, Sept. 8, 2022 — A digital droplet microfluidic flow cytometry technique could enable earlier recognition of tumor development and progress, by aiding in the detection of multiple microRNAs (miRNAs) in single circulating tumor cells (CTCs). Tumor-associated miRNAs...
Plasmonics-Based COVID-19 Test Delivers Results in POC Settings
NEW YORK, Aug. 17, 2022 — Researchers at Columbia Engineering and Rover Diagnostics, a Columbia Technology Ventures company, used plasmonic nanoparticles with compact optics to develop a real-time, multiplexed, reverse-transcriptase quantitative polymerase chain reaction...
Miniaturized Tweezer Traps Single Atoms for Quantum Exploration
GAITHERSBURG, Md., Aug. 11, 2022 — Scientists at the National Institute of Standards and Technology (NIST) and JILA, formerly the Joint Institute for Laboratory Astrophysics, developed a miniaturized optical tweezer that captured single atoms. The challenging task of single-atom...
Mechanoluminescent Glass-Ceramic Could Provide Readout of Structural Strain
WASHINGTON, D.C., Aug. 8, 2022 — A team at Friedrich Schiller University Jena has developed a glass-ceramic material that emits light in response to mechanical stress. With further development, the mechanoluminescent material could provide a means to detect and monitor mechanical...
Lasers Spur Gas Motion in Water to Boost Chemical Manufacturing
XI’AN, China, Aug. 4, 2022 — Researchers at Xi’an Jiaotong University have devised a potential solution for the self-transport of gas underwater using a femtosecond laser. The team created a superhydrophobic surface with a hollow microchannel less than 100 µm wide....
Light-Powered Nanomotors Perform as Ultrasmall Energy Converters
AUSTIN, Texas, July 21, 2022 — Researchers at the University of Texas (UT) have designed a solid-state, optical nanomotor that uses light to power functional devices at the nanoscale — without the challenges that hinder nanomotors operating in liquid environments. According...
Nonlinear Optical Sensor Avoids Precision/Speed Trade-Off
AMSTERDAM, June 29, 2022 — An optical measurement method devised by a team of AMOLF researchers aims to simplify and streamline the ability to capture measurements from signals that are barely larger than the noise contained in the same system. The newly introduced approach...
Microscopy Methods Pair to Advance Nanoscale Superresolution Imaging
PITTSBURGH, May 24, 2022 — Researchers combined stimulated Raman scattering (SRS) with expansion microscopy to develop a single microscopy technique that achieves superresolution vibrational imaging at the nanoscale. A team from Carnegie Mellon and Columbia universities...
Siemens, GlobalFoundries Unite Platforms to Verify Silicon Photonics
PLANO, Texas, May 19, 2022 — Siemens and GlobalFoundries (GF) extended their collaboration, shifting it into the silicon photonics market. Siemens Digital Industries Software’s Calibre nmPlatform enables designers to use the newest GF silicon photonics platform, GF...
Metalens Cuts Complexities for Semiconductor Manufacturing
HOUSTON, May 9, 2022 — Rice University researchers have developed a metalens that transforms incoming longwave UV light (UVA) into a focused output of vacuum UV (VUV) radiation. VUV is used in semiconductor manufacturing, photochemistry, and materials science....
Team Looks to the LWIR to Fabricate Achromatic Metalens
CHANGCHUN, China, May 9, 2022 — Researchers from the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences demonstrated a broadband achromatic metalens with a numerical aperture of 0.32. The demonstration stemmed from a general method,...
AR Coating Technique Streamlines 3D-Printed Micro-Optics
WASHINGTON, D.C., May 3, 2022 — Researchers at the University of Stuttgart have developed a low-temperature atomic layer deposition (ALD) technique for applying antireflective (AR) coatings to lens surfaces in multi-lens systems. The technique could reduce reflectivity and enhance...
Noninvasive Imaging Method Measures Below the Diffraction Limit
WASHINGTON, D.C., April 29, 2022 — A label-free microscopy technique developed by researchers at the University of Graz enables noninvasive, sub-diffraction-limit imaging of nanostructures. The all-linear, optical far-field measurement and imaging technique measures the position and...
Light-Driven Microdrones Offer Nanosensing, Motion Possibilities
WÜRZBURG, Germany, April 26, 2022 — Physicists at the University of Würzburg have used light to propel micrometer-size objects in an aqueous environment and control them precisely on a surface with all three degrees of freedom — two translational degrees and a rotational...
Microsize Molecular Machines Swarm for Drug Delivery
SAPPORO, Japan, April 25, 2022 — Scientists at Hokkaido University demonstrated light-manipulated microsize molecular machines, or robots, that performed cargo delivery through a swarming strategy to ultimately achieve a transport efficiency 5× greater than that of single...
Lithography Technique Precisely Controls Nanodevice Feature Sizes
HONG KONG, April 19, 2022 — Researchers at the University of Hong Kong (HKU) developed an approach for nanodevice fabrication to increase the efficiency of building nanostructures that require spatially different dimensions. The researchers devised and demonstrated a...
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