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New Milestone in Laser Bonding
The demand for lightweight construction and economic efficiency has led to R&D efforts in metal-plastic combinations. Although primarily driven by the automotive industry, this has become an increasingly important topic for other industries as well. By using a high-power short-pulse laser it is possible to establish a simple joint with a very high loadability.
Photonics Spectra, October 2016
Femtosecond Lasers Power New Approaches in Optogenetics
One of the most active and exciting areas in neuroscience is the use of optogenetics to unravel how neural pathways in the brain process and transmit information. Optogenetics involves the use of light-sensitive opsins — a special class of...
Photonics Spectra, November 2016
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Optical Materials of Tomorrow
From silicon photonics and quantum dots to metamaterials and carbon nanotubes, innovative materials promise a faster, brighter and more integrated future. While some materials have already enjoyed a measure of commercial success, for others, the...
Photonics Spectra, November 2016
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In Vitro Diagnostics, Immunology Spurring Advances in Flow Cytometry
Cells are the building blocks of organisms. From yeast and bacteria to elephants and whales, cells are the fundamental units of both biological structure and function. They have long been the subject of intense study: to better understand how they...
Photonics Spectra, November 2016
Quantum Cascade Laser Breakthrough for Advanced Remote Detection
The atoms in a molecule can bend, stretch and rotate with respect to one another, and these excitations are largely optically active. Most molecules, from simple to moderately complex, have a characteristic absorption spectrum in the 3- to...
Photonics Spectra, November 2016
A High-Resolution View of the Universe
Under ideal circumstances, the resolution of an optical system is limited by the diffraction of light waves. This diffraction limit, the maximum resolution a telescope can achieve, improves linearly with the telescope’s aperture. However, the...
Photonics Spectra, November 2016
Laser Welding Joins the Lightweighting Trend
To return the Cadillac brand to the global prestige luxury stage, General Motors threw as much as it could — 13 materials in all — into the sedan’s body to make it the lightest vehicle in its class. And then to join this...
Photonics.com, September 2016
Machine Vision Helps Adhesive Trend Stick in Auto Industry
Business has been getting stickier for Ron Weber, president of USS Vision, a Livonia, Mich., machine vision integration and automated inspection system firm. As automakers race to meet federal regulations that call for higher fuel-efficiency...
Photonics.com, September 2016
Two-Photon Polymerization: Additive Manufacturing From the Inside Out
The 20th century was an era of revolutionary materials science development, as plastics, semiconductors and biomaterials were introduced, and established materials such as metals and ceramics were significantly upgraded. These new and improved...
Photonics.com, September 2016
Member Exclusive
Great Strides in Optical Fabrication
In 2018, a six-and-a-half-meter mirror made up of 18 hexagonal segments will quietly unfurl 1.5 million km from Earth, marking the end of years of intense research and refining of optics fabrication techniques. In the silence of space, the James...
Photonics Spectra, October 2016
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Two-Dimensional MEMS Arrays Pave Way for Mobile Spectrometers
In the field of near-infrared (NIR) spectroscopy, a system that combines portability with the accuracy and functionality of high-performance laboratory systems would significantly enhance real-time analysis. The development of small handheld...
Photonics Spectra, October 2016
Maximum Exposure: Ray-Tracing Software Optimizes Reflector Design
The concentrated solar market is often overshadowed by photovoltaic (PV) panels, yet the market segment is expected to grow by nearly 20 percent annually through 2020. Concentrated solar power — or CSP — has unique performance advantages...
Photonics Spectra, October 2016
3D Displays Get Closer but Face Hurdles
For viewers, a trip into the third dimension is getting cheaper and more satisfying. It also could be getting a lot nearer, driven by changes in photonics, optics and the market. Further out lies the possibility of 3D displays that mimic what is...
Photonics Spectra, October 2016
THz Photonics: Delivering Fiber Data Rates on Radio Channels
The development of THz devices, operating at fiber optic wavelengths, could soon cover the last available part of the spectrum — millimeter/submillimeter frequencies — tackling the problem of bandwidth requirements for mobile end-user connectivity.
Photonics.com, September 2016
For Compactness and Ruggedness, Linear Variable Filters Fit the Bill
Spectroscopic optical applications have conventionally utilized dispersive elements such as diffraction gratings and, less commonly, prisms to separate light into its constituent wavelengths for spectral interrogation. Gratings have the advantage in...
Photonics Spectra, September 2016
Member Exclusive
For MEMS Displays, Projections of Success
When it comes to microelectromechanical systems (MEMS)-based displays, what’s old is new — and now the only game in town. The old, and now only, technology involves projectors, which exploit MEMS chips to create images by bouncing light off either...
Photonics Spectra, September 2016
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Testing the Limits of Excimer Lasers: Annealing for Advanced Displays
Low-temperature polycrystalline silicon is increasingly used as the thin-film transistor material on the glass backplanes of high-performance displays, particularly for smartphones. These thin films are fabricated on large glass panels that then are...
Photonics Spectra, September 2016
Ensuring Accurate Quantitative Image Analysis
Quality control in materials inspection requires the ability to detect and quantify both minute surface imperfections, and those beneath the surface. Inspection is often conducted with digital imaging microscopy setups; however, such images are...
Photonics.com, September 2016
Innovation in Surface Tracking Opens Doors to Raman Imaging Applications
Scientists dream of being able to probe variations in the chemical composition and structure of materials without any form of sample preparation. Raman spectroscopy, a noncontact, nondestructive analysis tool that yields information on the chemical,...
Photonics Spectra, September 2016
Achieving Optimum LED Performance With Quantum Dots
The use of quantum dots in combination with LEDs shows huge potential benefits for the lighting industry. The versatility and tunability of quantum dots can offer solutions when optimizing luminaire design for peak performance.
Photonics.com, September 2016
Beacons of the Photonics Industry
As part of the annual Reader issue, Photonics Spectra is unveiling a new recognition program called The Beacons. Selected from nominations put forth by you, our readers, the distinction is reserved for those in the industry who have made significant...
Photonics Spectra, August 2016
Integrated Photonics: A Tale of Two Materials
With its suitability for monolithic integration for optics and photonics, silicon has been widely hailed as the material of the future. But graphene — with its capacity for signal emission, transmission and detection — could be the next...
Photonics Spectra, August 2016
Image Processing Interprets the Modern World
From the moment we wake up and open our eyes, we are processing images. It is this image processing that enables us to successfully complete tasks from the mundane to those that are undertaken only by the gifted professionals trained to make...
Photonics Spectra, August 2016
Member Exclusive
Optical Metrology Breaks Barriers
At one time, the diffraction limit, half the wavelength of light, acted as a cutoff to optical measurement. That’s no longer the case. Superresolution techniques now allow optical metrology well below that point in the XY direction, while...
Photonics Spectra, August 2016
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Simulation, Experiment Unite Graphene and Plasmonics
Ever since a single-atom-thick film of graphite was first successfully synthesized back in 2004, graphene has been on a decade-long ride through applications ranging from photovoltaics and next-generation batteries to electronics.
Photonics Spectra, August 2016
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