Results 61 to 70 of about 157,825 (301)

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

open access: yesAdvanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang   +7 more
wiley   +1 more source

Blue light-emitting diode based on ZnO

open access: yes, 2005
A near-band-edge bluish electroluminescence (EL) band centered at around 440 nm was observed from ZnO p-i-n homojunction diodes through a semi-transparent electrode deposited on the p-type ZnO top layer.
Chichibu, Shigefusa F.   +7 more
core   +1 more source

Hybrid remote quantum dot/powder phosphor designs for display backlights [PDF]

open access: yes, 2017
Quantum dots are ideally suited for color conversion in light emitting diodes owing to their spectral tunability, high conversion efficiency and narrow emission bands.
Abé, Sofie   +4 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Association of light emitting diodes (LED) devices with premature aging: a cross-sectional descriptive study

open access: yesJournal of the Pakistan Medical Association
Objective: To assess the relationship between light-emitting diode device usage and premature aging. Method: The cross-sectional, descriptive study was conducted from October 2023 to May 2024 after approval from the ethics review committee of Pakistan
Sadia Rehman   +5 more
doaj   +1 more source

Nonlinear Quantum Dot Light Emitting Diode Dynamics and Synchronization with Optoelectronic Feedback

open access: yesمجلة علوم ذي قار, 2023
We studies a three-variable dimensionless model for a quantum dot light emitting diode (QD-LED) subject to optoelectronic feedback (OEFB). In dependence of the feedback strength and delay-time we analyze complex bifurcation scenarios for the intensity ...
Methag Abdalwahed Kadim   +9 more
doaj   +1 more source

Anti-bunched photons from a lateral light-emitting diode

open access: yes, 2011
We demonstrate anti-bunched emission from a lateral-light emitting diode. Sub-Poissonian emission statistic, with a g$^{(2)}$(0)=0.7, is achieved at cryogenic temperature in the pulsed low-current regime, by exploiting electron injection through shallow ...
Beere, Harvey E.   +6 more
core   +1 more source

Optical nanolithography using a scanning near-field probe with an integrated light source [PDF]

open access: yes, 2008
An ultracompact near-field optical probe is described that is based on a single, integrated assembly consisting of a gallium nitride (GaN) light-emitting diode (LED), a microlens, and a cantilever assembly containing a hollow pyramidal probe with a ...
Adawi, Ali M.   +4 more
core   +2 more sources

Bacterial Hybrid Light‐Emitting Diodes

open access: yesAdvanced Materials
AbstractPhoton down‐converting filters with fluorescent proteins (FPs) are a new frontier in the quest for rare‐earth‐free and non‐toxic color filters for white light‐emitting diodes. There are, however, concerns related to the FP purification costs and lack of FP recyclability/reuse.
Sara Ferrara   +3 more
openaire   +3 more sources

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

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