DOUG FARMER, SENIOR EDITOR [email protected]An optical mapping system has demonstrated that hydroxychloroquine (HCQ) can cause arrhythmia in animals, so researchers and clinicians are cautious about its effectiveness as a treatment of COVID-19 in people. Previously, HCQ, a less toxic form of chloroquine (CQ), has been prescribed to those with malaria and various autoimmune conditions and has showed some promise in reducing COVID-19 symptoms in a limited number of cases. Images show the voltage surface on a rabbit heart with and without HCQ. Without the drug (normal), the electrical activation spreads homogeneously, while with HCQ,...Read full articleRelated content from Photonics MediaArticlesLight Therapy Could Soon Treat Cardiac ArrhythmiaHeart disease is the leading cause of death in the developed world. Sudden cardiac death is triggered by the breakdown of a normal periodic heart rhythm, also known as the sinus rhythm. The emergence...BioPhotonics May/Jun 2023 IssueFlow Cytometry Uncovers Predictive Biomarker for Severe COVIDUsing image-based flow cytometry, researchers at the Technical University of Munich (TUM) identified a biomarker for predicting how serious a COVID-19 infection will be. They also developed a rapid...BioPhotonics.com December 2023 IssueAI, Lasers Automate Rapid Sorting and Analysis of Live CellsTo realize the potential of personalized medicine and overcome crisis situations like the recent pandemic, labs need an efficient way to isolate living cells for analysis and testing. The ability to...BioPhotonics May/Jun 2024 IssueLabel-Free Imaging Shows Dynamics of Intracellular Cargo TransportUntil now, scientists have relied on fluorescence microscopy techniques to study intracellular cargo transport, a vital process to maintaining essential cellular functions. However, the effects of...BioPhotonics Jan/Feb 2024 IssueProductsShortpass FiltersThe SP870 and SP910 from Midwest Optical Systems, Inc. are shortpass optical filters designed for passing multiple wavelengths with a broad-spectrum camera. The SP870 filters can be used in...Photonics.com 6/20/2024Optical Filter SetsThe Newport™ ODiate® Fluorescent Filter Sets from MKS Instruments are single band optical filter sets designed for wavelength ranges of common fluorophores used in fluorescent imaging. The...BioPhotonics.com October 2024 IssueLEDiL Optics KitThe New Energy LEDiL Optics Kit (NELOK) from NewEnergy consists of a single LED mounted on a printed circuit board and attached to a heatsink along with 15 lenses, three each from five lens families....Photonics Spectra November 2023 IssueBandpass FiltersThe ADVANTECH™ hard coat bandpass filters from Andover Corp. offer steep slopes, high light transmission, durability, and long life for demanding applications. The filters provide...BioPhotonics May/Jun 2023 IssuePhotonics Handbook ArticlesDigital Still Cameras: The Changing Face of ImagingThe digital camera represents an integration of optics, mechanics and electronics consisting of three layers (Figures 1a, b and c). The top and the middle layers are printed circuit boards (PCBs),...Photonics HandbookNano-Optics: New Rules for Optical ComponentsWhen physical structures get very small — on the order of molecular or atomic sizes with one or more dimensions on the nanoscale — their behavior and interactions with energy, including...Photonics HandbookNano-Optics Technology: Optical AlchemyOptics today needs alchemy, and the forces that motivate microchip technology are a key reason why. Today, light can transmit and process digital information as well as electricity can — in...Photonics HandbookLens Aberrations: Avoiding Defects in ImageryA lens collects light from a point on an object and focuses it to a corresponding conjugate point on an image. Under most conditions, the lens fails at this task because of some error in the...Photonics HandbookWhite Papers“Fingerprint” vs Handheld Raman Applications and the Different Optical Filters That Enable ThemRaman spectroscopy is a powerful non-invasive, non-contact tool capable of identifying molecular constituents of samples. Wavelength selective optical filters are used to block the dominant Rayleigh...Photonics.com 4/28/2023Accuracy in Optical DesignAnswering some common questions new users of optical design and analysis software have are “How accurate are the results?” or “Can I trust the results I get?” and discussing the importance of...Photonics.com 9/29/2023AstronomyExtremely durable coatings withstand humidity changes and extreme temperature fluxes and remain spectrally accurate in center wavelength (CWL) and band pass adherence. All filters are manufactured...Photonics.com 8/20/2024What Is the Modulation Transfer Function?The modulation transfer function, or MTF, is a parameter used to evaluate the performance of a lens. MTF provides a quantitative and standardized way to characterize optical systems, so the metric is...Photonics.com 8/7/2023Webinars3D Printing Enables Agile Design for OCT Systems and ApplicationsOptical coherence tomography (OCT) is a biomedical optical imaging technique that uses low coherence interferometry to resolve backscattered light by depth. It has become a widely used technique for...Photonics.com 1/22/2021Novel SWIR Detectors and Imagers Approaching the Thermodynamic Detection LimitPhoton detectors are now at the heart of many modern scientific, medical, industrial and security systems. These detectors, whether single-element or imaging arrays, are often the performance...Photonics.com 4/9/2015Automation in Microscopy Captures the Whole SampleKevin McCarthy explores recent advancements in motion control technology that improve the image quality, throughput, size, and cost of digital imaging systems. At the heart of many life science and...Photonics.com 1/22/2021Retinal Imaging with Adaptive Optics Optical Coherence TomographyWhen imaging the living human eye, even if a person has perfect vision, blur caused by ocular aberrations of the eye limits resolution. This blur rapidly fluctuates due to a number of factors, such...Photonics.com 9/25/2024Photonics Dictionary Termson-board opticsOn-board optics refers to optical systems integrated into devices or platforms for various purposes, such as imaging, navigation, communication, and sensing. These systems are crucial in a wide range...Photonics Dictionaryintensified charge-coupled device cameraAn intensified charge-coupled device (ICCD) camera is an advanced imaging device that combines the capabilities of both an image intensifier and a charge-coupled device (CCD) sensor to achieve...Photonics Dictionaryelectron multiplication charge-coupled device cameraAn EMCCD (electron-multiplying charge-coupled device) camera is a type of scientific camera specifically designed for low-light imaging applications that require high sensitivity and fast readout...Photonics DictionaryCCD cameraA CCD camera, or charge-coupled device camera, is a type of digital camera that utilizes a CCD image sensor to capture and record images. CCD cameras are widely used in various applications,...Photonics DictionaryMediaPhotonic Silicon & 3-D Printable Optics - LIGHT MATTERS 04.03.2013-Shrinking OCT -Photonic Logic Gate -Intravascular OCT This week on Light matters: bulk silicon emits visible light, 3-D printable optics are open sourced, a European project aims to shrink light...Photonics.com 4/3/2013Laser Classroom & Spaghetti SERS - LIGHT MATTERS 09.04.2013-Spaghetti SERS -Light Heart -Laser Classroom This week on Light Matters: a spaghetti-like surface makes for stronger SERS sensors, light might replace electricity blasts to restore healthy...Photonics.com 9/4/2013Introduction to OptometricsLearn about the team behind Efficiency Replicated. Experience. Trust. Partnership. We are your diffractive optics design solution partner.Photonics.com 10/25/2023About AlluxaGet a tour of our factory and the inside scoop on everything Alluxa has to offer.Photonics.com 9/30/2019Photonics Buyers' Guide CategoriesContrast Enhancement FiltersTelescope Accessories and SuppliesLaser LensesConcave and Convex Spherical MirrorsConcave and convex spherical mirrors are types of curved mirrors that have surfaces shaped like segments of spheres. These mirrors are commonly used in optics for various applications, including...CompaniesShanghai 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' GuideReynard CorporationReynard Corporation has been a premier supplier of custom optics and thin-film coatings to a global customer base since 1984. Reynard focuses on manufacturing the highest quality products with...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' 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