Non-contact sensing system based on GaN optoelectronic chip

As the global spread of COVID-19becomesarapidly19 becomes a rapidly evolvingcrisis,thedevelopmentofcontactlesssharedevolving crisis, the development of contactless shared interactivedisplaysisanurgentiinteractive displays is an urgent issuetoreducetheriskofssue to reduce the risk of viralandbacterialcrosscontaminationduetotheuseofviral and bacterial cross contamination due to the use of touchtouch -operatedshareduserterminals.Here,weoperated shared user terminals. Here, we experimentallydemonstrateacontactlessuserterminalexperimentally demonstrate a contactless user terminal fabricatedwithamonolithicGaNOptoelectronicsystemfabricated with a monolithic GaN Optoelectronic system (MGOS),which(MGOS), which integratesthetransmitterandreceiverintointegrates the transmitter and receiver into asinglechip.a single chip. TheinherentspectralemissionThe inherent spectral emission-responsivenessresponsiveness overlapofGaNQWdiodesgivesthedeviceauniqueabilityoverlap of GaN QW diodes gives the device a unique ability todetectlighttransmittedbydiodesthatsharethesameQWto detect light transmitted by diodes that share the same QW structure.WhentheGaNtransmstructure. When the GaN transm itteremitslighttoitter emits light to illuminateanexternalobject,theintegratedGaNreceiverilluminate an external object, the integrated GaN receiver candetectthereflectedlightencodingtheinformationandcan detect the reflected light encoding the information and converttheopticalsignalintoanelectricalsignal,sothatconvert the optical signal into an electrical signal, so that thenonthe non--contactuserterminalhastheabilitytouselcontact user terminal has the ability to use lightforight for bidirectionaldatacommunication.Comparedtotraditionalbidirectional data communication. Compared to traditional handwritingsystems,theseterminalsoperateascontactlesshandwriting systems, these terminals operate as contactless informationentrydevicesthatcanhelpreducepotentialinformation entry devices that can help reduce potential crosscross--contaminationduetocontactwithhandwritingcontamination due to contact with handwriting terminals,providepterminals, provide precautionstokeeptheenvironmentrecautions to keep the environment clean,andhelppreventvirustransmission.clean, and help prevent virus transmission.

[Nursing strategies for the facial skin injuries caused by wearing medical-grade protective equipment].

For effective resistance to virus attack and infection and reducing virus transmission chance, it is extremely important for the medical staff and related workers to have their own safe protection. The paper summarizes the occurrence causes, common locations, and prevention ways about the device related pressure ulcers on the face resulted from wearing medical-grade protective equipment for a long working time. The paper proposes the prevention and nursing strategies for device related pressure ulcers and other related skin injuries during application of medical-grade protective equipment. The paper aims to provide reference for the prevention and nursing of device related pressure ulcers and related skin diseases for clinical medical staff, especially to the respectable personnel in front line of fighting against coronavirus disease 2019.