Lighting

Access our comprehensive library of technical briefs on lighting, from engineering experts at NASA and major government, university, and commercial laboratories.

Briefs : Lighting
New Kind of Ultraviolet LED Could Lead to Portable, Low-Cost Devices

Commercial uses for ultraviolet (UV) light are growing, and now a new kind of LED under development at The Ohio State University could lead to more portable and low-cost uses of the technology. The patent-pending LED creates a more precise wavelength of UV light than today’s...

Briefs : Lighting
New Family of Tiny Crystals Glow Bright in LED Lights

Minuscule crystals that glow different colors may be the missing ingredient for white LED lighting that illuminates homes and offices as effectively as natural sunlight.

Briefs : Lighting
Fine-Tuning Emissions From Quantum Dots

Tiny particles of matter called quantum dots, which emit light with exceptionally pure and bright colors, have found a prominent role as biological markers. In addition, they are realizing their potential in computer and television screens, and have promise in solid-state lighting. New research at MIT...

Briefs : Lighting
Atomic-Scale Investigations Solve Key Puzzle of LED Efficiency

From the high-resolution glow of flat screen televisions to light bulbs that last for years, light-emitting diodes (LEDs) continue to transform technology. The celebrated efficiency and versatility of LEDs and other solid-state technologies including laser diodes and solar...

Briefs : Lighting
Nanometer-Scale Material Can Speed Up and Squeeze Light

In a process comparable to squeezing an elephant through a pinhole, researchers at Missouri University of Science and Technology have designed a way to engineer atoms capable of funneling light through ultra-small channels. Their research is the latest in a series of recent findings related...

Briefs : Lighting
New Technique Could Improve Optical Devices

Amulti-university research team has used a new spectroscopic method to gain a key insight into how light is emitted from layered nanomaterials and other thin films. The technique, called energy-momentum spectroscopy, enables researchers to look at the light emerging from a thin film and determine...

Briefs : Lighting
DNA and Quantum Dots – All That Glitters is Not Gold

Ateam of researchers at the National Institute of Standards and Technology (NIST) has shown that by bringing gold nanoparticles close to the dots and using a DNA template to control the distances, the intensity of a quantum dot's fluorescence can be predictably increased or decreased. This...

Briefs : Lighting
Spectrally Tunable Lighting Source Enables Color Rendering Evaluation

Solid-state lighting (SSL) is increasingly being introduced into the market and it is expected that many of the light sources currently used for general illumination will be replaced by light-emitting diodes (LEDs) in the future. As the spectra of LED sources are dissimilar to...

Briefs : Lighting
New MicroLEDs Achieve Ultra-High Light Intensity

InfiniLED’s latest MicroLEDs (μLEDs) have produced record optical beam intensity. This new device is capable of producing up to 1mW of light from a single 20μm pixel at 405nm. This is equivalent to a light output density of more than 300 W/cm2 — the high cm2 est recorded for a commercially...

Briefs : Lighting
Chips That Can Steer Light

If you want to create a moving light source, you have a few possibilities. One is to mount a light emitter in some kind of mechanical housing — the approach used in, for example, theatrical spotlights, which stage hands swivel and tilt to track performers. Another possibility, however, is to create an array of light...

Briefs : Lighting
Photons Emitted by Quantum Dots Can be Made Indistinguishable Through Quantum Frequency Conversion

An international collaboration led by researchers from the NIST Center for Nanoscale Science and Technology has demonstrated the ability to make photons emitted by quantum dots at different frequencies identical to each other by shifting their...

Briefs : Lighting
Self-Assembled Monolayers Create P-N Junctions in Graphene Films

The electronic properties of graphene films are directly affected by the characteristics of the substrates on which they are grown or to which they are transferred. Researchers are taking advantage of this to create graphene p-n junctions by transferring films of the promising...

Briefs : Lighting
New Platform Developed to Measure and Exploit Optomechanical Interactions

Researchers from the NIST Center for Nanoscale Science and Technology and Caltech have developed a new design platform for measuring and exploiting strong interactions between light confined in a nanoscale structure and an adjacent nanomechanical system. The versatile...

Briefs : Lighting
Researchers Develop New Method to Light Roundabouts

Roundabouts, also known as traffic circles, are increasing in number across the U.S. These intersections generally increase traffic throughput while reducing the severity of automobile accidents. However, as relatively new traffic features, modern roundabouts are sometimes described as...

Briefs : Lighting
NASA Tests LED Lights in Plant Growth Experiments for Deep Space Missions

What kind of food will astronauts eat and what is the best way to grow it during deep space exploration missions? A group of plant biologists is seeking the answers as it works on one of NASA’s Advanced Exploration Systems (AES) Habitation Projects at Kennedy Space...

Briefs : Lighting
Measurement Advance Using LEDs Could Speed Innovation in Solar Devices

A new versatile measurement system devised by researchers at the National Institute of Standards and Technology (NIST) accurately and quickly measures the electric power output of solar energy devices, capabilities useful to researchers and manufacturers working to develop...

Briefs : Lighting
LED Technology Holds Most Promise To Save Energy and the Environment

Today's light-emitting diode light bulbs have a slight environmental edge over compact fluorescent lamps, and that gap is expected to grow significantly as technology and manufacturing methods improve in the next five years. So says a recent report from the Department of...

Briefs : Lighting
Efficient Optical Spectroscopy of Single Solid-State Quantum Emitters

Devices such as light-emitting diodes (LEDs) and lasers are typically based upon the accumulated emission from a large number of gas phase atoms, ions in solids, electron-hole pairs in semiconductors, or other fluorescence centers. In such macroscopic devices, the behavior of...

Briefs : Lighting
'Metamaterials,' Quantum Dots Show Promise for New Technologies

Researchers are edging toward the creation of new optical technologies using "nanostructured metamaterials" capable of ultra-efficient transmission of light, with potential applications including advanced solar cells and quantum computing.

Briefs : Lighting
New Technique Allows Simulation of Noncrystalline Materials

A multidisciplinary team of researchers at MIT and in Spain has found a new mathematical approach to simulating the electronic behavior of noncrystalline materials, which may eventually play an important part in new devices including solar cells, organic LED lights, and printable,...

Briefs : Lighting
Colorful Light Could Be Used For Radiation Detection

A team of nanomaterials researchers at Sandia National Laboratories has developed a new technique that could make radiation detection in cargo and baggage more effective and less costly for homeland security inspectors. Known as spectral shape discrimination (SSD), the method takes advantage...

Briefs : Lighting
Bright Future for GaN Nanowires

The gallium nitride nanowires grown by PML scientists may only be a few tenths of a micrometer in diameter, but they promise a very wide range of applications, from new light-emitting diodes and diode lasers to ultra-small resonators, chemical sensors, and highly sensitive atomic probe tips.

Briefs : Lighting
Full-Scale, Self-Emissive, Blue and Green Microdisplays Based on Micro-LED Arrays

These displays could play crucial roles in ultra-portable products such as next-generation pico-projectors and in emerging fields such as biophotonics and optogenetics.

Texas Tech University and III-N Technology, Inc., Lubbock, TX,
and
...
Briefs : Lighting
Controlling the Composition and Structure of Nanowires for LED Applications

Nanowires — microscopic fibers that can be “grown” in a lab — have a variety of potential applications, including LEDs and sensors. A team of MIT researchers has found a way of precisely controlling the width and composition of these tiny strands as they grow,...

Briefs : Lighting
Micro-Cavity Arrays

It was not too long ago that basic science lectures began with the three forms of matter: gases, liquids and solids—and somewhere along the line plasmas were occasionally added to the list. But to be precise, a plasma is an ionized gas; thus, a subset of the big three. But this subset has coexisted with the other forms...

Briefs : Lighting
Retail Merchandise Tracking System

Looking for an item in a large department store or mall can be like searching for a needle in a haystack, but that could change thanks to a hybrid location identification system that uses radio frequency transmitters and overhead LED lights, suggested by a team of researchers from Penn State and Hallym...

Briefs : Lighting
Quantum Dot Light Enhancement Substrate
Quantum Dot Light Enhancement Substrate

A cost-competitive solution for increasing the light extraction efficiency of organic light-emitting diodes (OLEDs) with efficient and stable color rendering index (CRI) for solid-state lighting (SSL)...

Quantum Dot Light Enhancement Substrate
Briefs : Lighting
Quantum Dot Light Enhancement Substrate

Acost-competitive solution for increasing the light extraction efficiency of organic light-emitting diodes (OLEDs) with efficient and stable color rendering index (CRI) for solid-state lighting (SSL) was developed and demonstrated. Solution processable quantum dot (QD) films were integrated into OLED...

Briefs : Lighting
Dark Red Luminescent Material for LEDs

The use of a material development method known as high-throughput experimentation (HTE), which allows for the screening of large composition areas of complex material systems, has led to the discovery of a dark red luminescent material for light-emitting diodes (LEDs). The new luminescent material can be...

Briefs : Energy
Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting

Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high-cost materials such as indium tin oxide (ITO) or indium zinc oxide (IZO) as the transparent...

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