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Duke University News
OCT Luminary Figure Joseph Izatt Dies
DURHAM, N.C., April 9, 2024 — Joseph Izatt, the Michael J. Fitzpatrick Professor of Engineering and chair of Duke’s Department of Biomedical Engineering, passed away April 7. Joseph Izatt. Courtesy of Duke University. Izatt played a foundational role in the development of optical coherence tomography (OCT). His collaboration with Duke ophthalmology professor Cynthia Toth to improve the accuracy of examination and surgery of the eye led to the development of handheld OCT systems for infants and the first
Neurophos Raises $7.2M in Seed Round
AUSTIN, Texas, Dec. 15, 2023 — Neurophos, a spinout of Duke University and Metacept Inc. and incubator focused on creating metamaterials-based companies, raised $7.2 million in seed round funding to commercialize metamaterial and optical AI inference chips targeting data center...
Multimodal Microscopy Provides Window into Viruses’ Beginnings
DURHAM, N.C., Nov. 23, 2022 — To better understand how viruses breach the protective layers of cells that line the airways and gut, Duke University researchers used multimodal microscopy to capture real-time video footage of viruses as they approach their cellular targets. Using...
Widened 3D Field of View Enhances OCT Diagnostic Imaging
WASHINGTON, D.C., June 8, 2022 — Researchers at Duke University developed an optical coherence tomography (OCT) technique that delivers high contrast and high resolution over a wide, 3D field of view. The enhanced OCT technique, called 3D optical coherence refraction tomography (3D...
Photoacoustic System Enables Real-Time Neurovascular Imaging
DURHAM, N.C., May 27, 2022 — A photoacoustic imaging tool developed by Duke University researchers accommodates the need for both speed and comprehensive detail in neurovascular imaging. The imaging modality enables an approach to visualize whole-brain hemodynamics and...
Researchers Fool Autonomous Vehicles to Pinpoint Security Risks
DURHAM, N.C., March 30, 2022 — Tests showed that an attack strategy demonstrated by Duke University researchers fooled industry-standard autonomous vehicle sensors into believing nearby objects are closer and/or farther than they appear, without being detected. The work suggests...
Quantum Computing Technique Harnesses Noise
SEATTLE, Jan. 27, 2022 — Researchers at the University of Washington (UW) have developed optical computing hardware for AI and machine learning that is faster and more energy efficient than conventional electronics-based computers. The work also addresses another challenge:...
AI-driven Method Developed to Diagnose Neurodegenerative Diseases
DURHAM, N.C., May 28, 2021 — A combination of OCT, adaptive optics, and neural networks has the potential to enable better diagnosis and monitoring for eye and brain diseases, such as glaucoma, that damage neurons. The combination is part of an AI-drive process developed by...
Light and Heat Combined to Create Biocompatible Microparticles
DURHAM, N.C., March 16, 2020 — Using light and heat, researchers at Duke University developed a technique for manufacturing biocompatible microparticles for potential use in drug delivery, diagnostics, and tissue engineering. According to research scientist Stefan Roberts, the...
Butterfly Wing Nanostructures Achieve Ultrablack Coloration
DURHAM, N.C., March 13, 2020 — A team at Duke University is studying butterflies with wings that are 10 to 100 times darker than everyday black objects. As little as 0.06% of the light that hits the ultrablack butterfly wings is reflected back to the eye. This percentage is close...
Using Microwave Metamaterials in Machine Learning Speeds Object Recognition
DURHAM, N.C., Jan. 13, 2020 — A new approach to object identification, developed by researchers at Duke University and the Institut de Physique de Nice (INPHYNI), enables joint learning of optimal measurement strategies and a matching processing algorithm, and uses inferred...
Plasmonics-Based Light Detector Could Support Precision Agriculture
DURHAM, N.C., Nov. 27, 2019 — A new, broad-spectrum photodetector that can be implemented on a single chip has been developed at Duke University. The photodetector spans a range of light frequencies by using on-chip spectral filters created with electromagnetic materials. The...
Smart Microscope Teaches Itself Settings for Diagnosing Disease
DURHAM, N.C., Nov. 25, 2019 — Engineers at Duke University used machine learning to develop a microscope capable of adapting its lighting angles, colors, and patterns while teaching itself the optimal settings needed to complete a diagnostic task. In a proof-of-concept study,...
Inexpensive, Portable System Expands OCT's Reach in the Body
DURHAM, N.C., Nov. 15, 2019 — Researchers from Duke University have developed a way to use optical coherence tomography (OCT) in hard-to-reach areas of the body such as joints. The method may allow the technique to see use in further surgical and medical applications. The...
Machine Learning Speeds Metamaterial Design for Thermophotovoltaic Devices
DURHAM, N.C., Sept. 26, 2019 — A Duke University engineering team has used machine learning to design dielectric metamaterials that absorb and emit specific frequencies of terahertz (THz) radiation. Use of machine learning made it possible to calculate design requirements for the...
Computational Imaging Tools Improve Lateral OCT Resolution
DURHAM, N.C., Aug. 30, 2019 — A new technique called optical coherence refraction tomography (OCRT) is able to increase the resolution of OCT down to a single micrometer in all directions, even in a living patient.
New Technique Retrieves Color Images from Scattered Light
DURHAM, N.C., July 30, 2019 — Engineers at Duke University have developed a method for extracting a color image from a single exposure of light scattered through a mostly opaque material. The new approach overcomes the limitations of conventional optical memory effect techniques...
Improved Optical Multiplexing with Temporal DNA Barcodes
DURHAM, N.C., April 18, 2019 — In a new imaging technique developed at Duke University in collaboration with Oak Ridge National Laboratory, short strands of DNA were labeled with fluorescent, temporal “barcodes” for observing biochemical activity at the molecular...
With a Few Tweaks, a Near-Perfect Absorber Can Become a Time-Reversed Laser
DURHAM, N.C., Feb. 19, 2019 — With small adjustments, a near-perfect absorber of electromagnetic waves can be changed into a coherent perfect absorber (CPA), a device that absorbs coherent light and shows near-zero reflectance and high absorption. A CPA, also known as a...
Lens-Free, Multicolor Holography Technique Could Enable Compact 3D Displays
DURHAM, N.C., Jan. 28, 2019 — A holography technique based on computer-generated holograms (CHGs), developed by a team at Duke University, produces complex, multicolor holographic images without any bulky optical components. The researchers encoded a multicolor image onto a 300-...
Plasmonics Simplify Printing and Imaging in Color and Infrared
DURHAM, N.C., Dec. 15, 2016 — A new manufacturing technique promises to bring a simplified form of multispectral imaging into daily use. Using existing materials and production approaches that are scalable and inexpensive, Duke University researchers have found a way to print...
3D Data Captured with 2D Camera
DURHAM, N.C., Sept. 18, 2015 — With a few modifications and expanded processing capabilities, standard digital cameras can extract detailed 3D information from a single image. Developed at Duke University, the method does not sacrifice 2D still image quality. Meanwhile, it could...
Plasmonic Device Achieves 90-GHz Switching
DURHAM, N.C., July 27, 2015 — Able to flip on and off 90 billion times a second, a new plasmonic light emitter could form the basis of optical computing. "This is something that the scientific community has wanted to do for a long time," said Duke University professor Maiken...
Terahertz, IR Beams Detect Trace Gases at a Distance
DURHAM, N.C., Dec. 17, 2014 — A combination of IR and terahertz radiation (T-rays) is giving scientists a nose-up on toxic gases. This technology is able to sniff out even trace amounts of harmful gases — from chemical spill effects to nerve gas attacks — in the air...
Photon Emission Rate Enhanced in Fluorescent Molecules
DURHAM, N.C., Oct. 15, 2014 — Fluorescent molecules can be made to emit more photons by sandwiching them between metal nanocubes and a gold film. This film-coupled metal nanocube system features emitters embedded in the dielectric gap region. Its developers at Duke University...
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