Researchers at the University of California, Riverside (UC Riverside) and the University of Texas at Austin demonstrated the use of nontoxic silicon nanocrystals to convert low-energy photons into high-energy ones. The use of nontoxic materials for photon upconversion could help advance the development of photodynamic treatments for cancer. Ultraviolet (UV) light can form free radicals that can attack cancer tissue. However, it does not travel deep enough into tissues to generate therapeutic radicals close to the cancer site. 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For the...Photonics.com 7/2/2018PHOTONICS BUYERS' GUIDE CATEGORIESElectro-Optic CrystalsInfrared GlassCrystalline QuartzMagneto-Optic GlassCOMPANIESLaCroix Precision OpticsOptics that Defend, Build, Cure and Discover The LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have placed LaCroix Precision Optics...Photonics Buyers' GuideOhara Corporation, Western OfficeOhara manufactures precision optical glasses: strip/slab, cut/molded blanks, pressings, high homogeneity blanks, fine gobs, polished ball lenses, near-UV transmitting i-Line glass, ceramic...Photonics Buyers' GuideGlass Fab Inc.A History of Quality Since 1974 Glass Fab Inc. has met customers' stringent specifications by providing fabricated parts made of optical glass, filter glass, fused quartz and fused silica, low...Photonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...Photonics Buyers' Guide