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Researchers use laser paintbrush to create miniature masterpieces

Researchers use laser paintbrush to create miniature masterpieces
eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.

Leningradskaya oblastUnited statesPermskiy krayVadim veikoPrem kumarVan goghGalina odintsovaYaroslava andreevaL van cuongOptical societyNorthwestern universityStarry nightEditor in chief prem kumarஒன்றுபட்டது மாநிலங்களில்பிரேம் குமார்வேன் கோக்

Researchers capture first 3D super-resolution images in living mice

Researchers capture first 3D super-resolution images in living mice
eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.

United statesPrem kumarStefan hellJoerg bewersdorfYale school of medicineOptical societyNorthwestern universityYale schoolMary graceEditor in chief prem kumarஒன்றுபட்டது மாநிலங்களில்பிரேம் குமார்ஸ்டீபன் நரகம்யேல் பள்ளி ஆஃப் மருந்துஒளியியல் சமூகம்வடமேற்கு பல்கலைக்கழகம்

Researchers set new resolution record for imaging the human eye

E-Mail IMAGE: The researchers customized this adaptive optics scanning light ophthalmoscope to improve the imaging resolution by strategically blocking light in various locations of the instrument. Using less light is an advantage. view more Credit: Johnny Tam, National Eye Institute WASHINGTON Researchers have developed a noninvasive technique that can capture images of rod and cone photoreceptors with unprecedented detail. The advance could lead to new treatments and earlier detection for retinal diseases such as macular degeneration, a leading cause of vision loss. We are hopeful that this technique will better reveal subtle changes in the size, shape and distribution of rod and cone photoreceptors in diseases that affect the retina, said research team leader Johnny Tam from the National Eye Institute. Figuring out what happens to these cells before they are lost is an important step toward developing earlier interventions to treat and prevent blindness.

United statesPrem kumarJohnny tamNational institutes of health clinical centerNational eye instituteOptical societyNational institutes of healthIntramural research programNorthwestern universityNational eyeNational institutesEditor in chief prem kumarChemistry physics materials sciencesஒன்றுபட்டது மாநிலங்களில்பிரேம் குமார்ஜானி டாம்

Highly efficient metasurface poised to improve communication and biosensing

E-Mail IMAGE: Researchers created a new plasmonic metasurface that sandwiches fluorescent dye molecules between a gold film and 100-nanometer-wide silver cubes. When light hits this structure, it excites localized surface plasmons, which. view more Credit: Maiken H. Mikkelsen, Duke University WASHINGTON Researchers have created a new plasmonic metasurface that achieves record high light efficiency over the entire centimeter-scale metasurface. The advance makes the new nanostructured thin film practical for use in a variety of applications from light-based communication to fluorescence-based biosensing. The major obstacles for using plasmonic structures for practical applications is that they are either too inefficient or their nanoscale properties aren t easily scalable to larger sizes, said research team leader Maiken H. Mikkelsen from Duke University. We designed and optimized a plasmonic metasurface that overcomes both of these limitations.

United statesPrem kumarMaikenh mikkelsenOptical societyDuke universityNorthwestern universityEditor in chief prem kumarChemistry physics materials sciencesஒன்றுபட்டது மாநிலங்களில்பிரேம் குமார்ஒளியியல் சமூகம்டியூக் பல்கலைக்கழகம்வடமேற்கு பல்கலைக்கழகம்ஆசிரியர் இல் தலைமை பிரேம் குமார்வேதியியல் இயற்பியல் பொருட்கள் அறிவியல்

Researchers demonstrate nondestructive mid-infrared imaging using entangled photons

Loading video. VIDEO: This 3D animation shows the volume scan of a 900 μm thick structure, consisting of three layers of alumina ceramics. This structure cannot be sufficiently analyzed with commercial systems at. view more Credit: Aron Vanselow and Sven Ramelow, Humboldt-Universität zu Berlin WASHINGTON Researchers have shown that entangled photons can be used to improve the penetration depth of optical coherence tomography (OCT) in highly scattering materials. The method represents a way to perform OCT with mid-infrared wavelengths and could be useful for non-destructive testing and analysis of materials such as ceramics and paint samples. OCT is a nondestructive imaging method that provides detailed 3D images of subsurface structures. OCT is typically performed using visible or near-infrared wavelengths because light sources and detectors for these wavelengths are readily available. However, these wavelengths don t penetrate very deeply into highly scattering or

United statesMecklenburg vorpommernAron vanselowPrem kumarSven ramelowOptical societyResearch centerNorthwestern universityNon destructive testing gmbhEditor in chief prem kumarஒன்றுபட்டது மாநிலங்களில்மெக்லென்பர்க் வோர்பொம்மேர்ன்பிரேம் குமார்ஒளியியல் சமூகம்ஆராய்ச்சி மையம்வடமேற்கு பல்கலைக்கழகம்