Optical techniques are experimental and analytical methods that exploit the generation, manipulation, and detection of electromagnetic radiation in the ultraviolet, visible, and infrared ranges to probe material properties, structures, and dynamics. They encompass approaches such as absorption, fluorescence, Raman and elastic scattering measurements, interferometry, and imaging modalities that rely on well-defined light–matter interactions. These techniques enable quantitative characterization of refractive indices, absorption coefficients, energy level structures, molecular conformations, and nanoscale morphology, often with high spatial and temporal resolution. Optical techniques are widely integrated with spectroscopy, microscopy, and metrology platforms and can be implemented in both far-field and near-field configurations.
Optical microscopy is a key technique for understanding dynamic biological processes in cells, but observing these high-speed cellular dynamics accurately, at high spatial resolution, has long been a formidable task.
Optics & Photonics
Aug 23, 2025
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81
Holography—the science of recording and reconstructing light fields—has long been central to imaging, data storage, and encryption. Traditional holographic systems, however, rely on bulky optical setups and interference experiments, ...
Optics & Photonics
Aug 21, 2025
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88
Researchers have developed a technique to fold glass sheets into microscopic 3D photonic structures directly on a chip—a process they call photonic origami. The method could enable tiny, yet complex optical devices for data ...
Optics & Photonics
Aug 21, 2025
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92
Everyone who ever took a photo knows the problem: if you want a detailed image, you need a lot of light. In microscopy, however, too much light is often harmful to the sample—for example, when imaging sensitive biological ...
Optics & Photonics
Aug 20, 2025
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87
Optical frequency combs are specially designed lasers that act like rulers to accurately and rapidly measure specific frequencies of light. They can be used to detect and identify chemicals and pollutants with extremely high ...
Optics & Photonics
Aug 20, 2025
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175
Optical frequency combs, as a time and frequency "ruler," have important applications in precision ranging. Conventional dual-comb ranging schemes utilize the optical Vernier effect to achieve long-distance measurements, ...
Optics & Photonics
Aug 20, 2025
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88
Scientists have found a way to visualize delicate organs like the brain and heart by letting light into the tissues and exposing their inner workings, no dissection required. In their study published in Cell, Chinese researchers ...
Biomedical engineers at Duke University have developed a method to more precisely heat up gold nanoparticles to target and destroy cancerous tumors. Using imaging methods that combine light and sound to peer deeper into tissue, ...
Bio & Medicine
Aug 18, 2025
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35
If you've been to a routine eye exam at the optometrist's office, chances are you've had to place your chin and forehead up close to a bioimaging device.
Optics & Photonics
Aug 13, 2025
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44
For just over two years, a scalar magnetometer developed by Graz University of Technology (TU Graz) and the Space Research Institute (IWF) of the Austrian Academy of Sciences has been on its way to Jupiter as part of ESA's ...
Planetary Sciences
Aug 13, 2025
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35
