The unique properties of quantum dots allow them to be optimized for voltage sensing and for light-controlled electrical activation of cells.Dr. Elena Molokanova, Joseph A. Bartel, Dr. Weiwen Zhao, Dr. Imad Naasani, Dr. Michael J. Ignatius, Dr. Joseph A. Treadway, Dr. Alex Savtchenko, Invitrogen Corp.Quantum dots are transforming life sciences imaging because of their extraordinary photostability, brightness, broad excitation, narrow emission, long fluorescence lifetimes and multiplexing capability. The nanometer-scale inorganic crystals contain a few hundred to a few thousand atoms of a semiconductor material, and their behavior is governed by the laws of quantum physics. Quantum dots are not quite a molecule, although they have discrete electronic energy levels, and they are not a bulk semiconductor, either, although they demonstrate spin-orbit coupling and have large dielectric...Read full articleRelated content from Photonics MediaArticlesTiny Quantum Dot Sensors Solve Big IR Application ProblemsAs a second quantum revolution begins, many mysteries remain in the quantum realm. Perhaps this is unsurprising given the notoriously confounding properties of this new frontier. However, as time...Photonics Spectra November 2022 IssueA Multiphoton Microscope Enables Portable 3D Biological ImagingFor decades, optical microscopy has provided the mechanism with which to image cells and tissue for the purposes of cancer research, digital pathology, and the study of the brain. Samples are...BioPhotonics Sep/Oct 2022 IssueIllumination Advancing Fluorescence Microscopy in Life Sciences, Medical RealmsIn many academic research and medical settings, microscopy and imaging have transitioned from using traditional lamp illumination, such as mercury and Xenon lamphouses, to solid-state LED...BioPhotonics Sep/Oct 2023 IssueSpectral Monitoring Reveals the Health of River and Lake EcosystemsRivers represent just a small fraction of the water on Earth’s surface, but they serve as vital natural resources for numerous cities and communities worldwide. River systems supply food and...BioPhotonics Jul/Aug 2022 IssueProductsNucleus™ Automated MicroscopesThe Nucleus™ microscopy platform provides a complete set of interchangeable hardware modules and software tools, making it ideal for OEMs and lab managers engaged in fluorescence cellular...Promoted Content November 2023 IssueOEM-Ready Microscope SubsystemsThe Nucleus™ microscopy platform provides a complete set of interchangeable hardware modules and software tools, making it ideal for OEMs and lab managers engaged in fluorescence cellular...Promoted Content February 2024 Issue380-nm Laser ModuleThe IQ1C195(380-210) from Power Technology is a continuous wave high-power 380-nm laser diode module for high-end analytical and scientific applications, such as bioanalysis, fluorescence, and Raman...BioPhotonics.com March 2024 IssueUltra-Precision Microscopy DemoThe Nucleus™ microscopy platform provides a complete set of interchangeable hardware modules and software tools, making it ideal for OEMs and lab managers engaged in fluorescence cellular...Promoted Content March 2024 IssuePhotonics Handbook ArticlesDetectors: Guideposts on the Road to SelectionAny number of medical, industrial, and analytical applications requires the detection of light. Chemiluminescence, bioluminescence, fluorescence, and atomic absorption are just a few, and all require...Photonics HandbookThin-Film Coatings: A Buyers' GuideWhat are thin-film coatings? The purpose of any optical thin-film coating is to modify the transmittance and reflectance properties of the substrate material to which they are applied. Most coatings...Photonics HandbookOptical System Design: Keeping the Coatings in MindAn optical coating engineer is frequently confronted with a difficult specification for a coating. Often the difficulty in the specification results from the particular form of the optical system. If...Photonics HandbookFluorescence Lifetime Imaging: Choosing the Best ApproachThe term fluorescence is often applied as a synonym for photoluminescence, although luminescence actually covers fluorescence and phosphorescence. Both of these terms describe the process of...Photonics HandbookWhite PapersIs a DIY Microscope for You?For some advanced microscopy and nanoscopy techniques it becomes necessary to modify existing instrumentation or build an instrument from scratch. This article helps readers determine whether a...Photonics.com 4/20/2023Optimum Order Sorting Filters for SpectrometersLearn how linear variable filters can be used in a compact spectrometer to provide optimum order sorting.Photonics.com 2/28/2024Laser Light Engine Output StabilityIn this white paper, Dr. Iain Johnson, Lumencor’s Director of Technical Support, tests Lumencor’s laser-based CELESTA Light Engine for consistency, power, and stability using continuous wave...Photonics.com 1/10/2024Multiband Optical Filters Are Telecom Networks' MultitaskersThe ability to combine more than one spectral band into a single optical filter can enable flexibility of system design and reduce the number of components and the costs needed to achieve a desired...Photonics.com 8/16/2023WebinarsHigh-Resolution Measurement of Film Thickness and Refractive Index for Silicon Photonics and Planar Waveguide ApplicationsSilicon photonics and planar waveguide technologies have become integral components in the rapidly evolving landscape of optical communication, sensing, and integrated photonics. Planar waveguides...Photonics.com 12/6/2023Expanding Capabilities with Optimized NIR Confocal ImagingFluorescence microscopy historically has been dominated by blue, green, and red imaging. Although this limitation is acceptable for some applications, multiplexing and deep tissue imaging suffer with...Photonics.com 10/27/2021Wavelength-Selective Optical Filters: Providing More Signal and Less Background to PCR InstrumentsEngineers face many unique challenges when creating polymerase chain reaction (PCR) instrumentation. These challenges are seen in both the qualitative detection of nucleic acid sequences, using...Photonics.com 7/7/2022Simplifying Fluorescence Microscopy Using Next-Generation Laser TechnologyKonstantin Birngruber and Max Eisele introduce TOPTICA's next-generation laser technology by highlighting multicolor light engines for standard fluorescence microscopy, as well as TOPTICA's...Photonics.com 10/26/2021Photonics Dictionary TermsfluorophoreA fluorophore is a molecule or a portion of a molecule that has the ability to emit light upon excitation by an external energy source, such as ultraviolet or visible light. The process by which a...Photonics Dictionaryoptical filterAn optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical filters are used to control the spectral content of light in various...Photonics Dictionarydichroic mirrorA dichroic mirror, also known as a dichroic beamsplitter or interference filter beamsplitter, is an optical device that selectively reflects or transmits light based on its wavelength. Dichroic...Photonics Dictionaryultraviolet fiber opticsUltraviolet (UV) fiber optics refers to optical fibers that are designed and optimized for the transmission of ultraviolet light, which is electromagnetic radiation with wavelengths shorter than...Photonics DictionaryMediaApplied Scientific InstrumentationEstablished in 1990, Applied Scientific Instrumentation is a reknown American company committed to the advancement of science. ASI products have been thoroughly tested and evaluated in numerous labs...Photonics.com 5/2/2022CELESTA Light Engine - Customer Success StorySolving MERFISH challenges for Spatial TranscriptomicsPhotonics.com 1/9/2024What's the Difference Between Anti-Reflective and Anti-Glare - North American Coating LaboratoriesA common question we receive here at North American Coating Laboratories is “what is the difference between an anti-glare process and an anti-reflective process?”. This video will answer your...Photonics.com 8/1/2022About AlluxaGet a tour of our factory and the inside scoop on everything Alluxa has to offer.Photonics.com 9/30/2019Photonics Buyers' Guide CategoriesX-Ray CoatingsPhotomultiplier Tube DetectorsQuantum DotsA quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties...Fluorescence MicroscopesCompaniesLaCroix Precision OpticsThe LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have guided LaCroix Precision Optics to become the premier precision optics...Photonics Buyers' GuideAvantier Inc.Avantier Inc. is an unparalleled leader in providing innovative imaging systems solutions and optical systems solutions. We offer advance precision custom optical design, optical engineering...Photonics Buyers' GuideShanghai Optics Inc.ISO 9001 & ISO 13485 certified and D&B DUNS # 113515303 Shanghai Optics is an unparalleled custom system solution provider offering advance precision custom optical design, engineering,...Photonics Buyers' GuideMLD Technologies LLCExperts In Thin-film Coating Design We practice a design-before-quote approach to help customers refine specifications and minimize technical risk. We understand how coated optical elements...Photonics Buyers' Guide