Optical Phased Array-Based Optical Tweezers Manipulate Cells without Damaging Them
Compared to bulk optical tweezers, integrated optical tweezers are compact and low-cost, making them practical for most research organizations. But so far, integrated optical tweezers have been of limited use in biological research, due to the very small standoff distances they provide.
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Imaging Technique Enables 20-nm Resolution on Standard Microscopes
A new expansion microscopy (ExM) technique from MIT makes it possible to use a conventional light microscope to generate high-resolution images at the nanoscale. The new ExM protocol, which achieves 20-fold expansion in just one step, provides a simple, inexpensive method that can be used by most biology labs to perform imaging at a resolution of about 20 nm.
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Photoacoustic Technique Captures Real-Time Anomalies in Microvasculature
By using a laser to generate ultrasound waves that reveal structural changes, photoacoustic tomography has shown its value in identifying disease conditions in the microvasculature, the tiny vessels that extend from major veins and arteries. To this point, however, the process has been too slow to capture this information in real time, limiting its value in clinical settings. That is now changing, thanks to a device developed at University College London that doctors could potentially hold right in their hands.
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Features
Fluorescence Microscopy, NIR Spectroscopy, Terahertz Imaging, and LED Illumination
Photonics Media is currently seeking technical feature articles on a variety of topics for publication in our magazine BioPhotonics. Please submit an informal 100-word abstract to Senior Editor Doug Farmer at [email protected], or use our online submission form www.photonics.com/submitfeature.aspx.
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