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Surface Plasmon Resonance: Smartphone Senses Temperature
Introducing Surface Plasmon Resonance Surface plasmon resonance (SPR) is an optical detection technique commonly used to study biomolecular interactions. SPR is highly-sensitive to changes in the ...
The Light Bulb: From Arc to Incandescent to Fluorescent to LED
Introduction The invention and utilization of artificial light was crucial to the development of civilization because it enabled humans to extend the length of the day. Today, certain light bulbs are ...
Semiconductor Nanowire Photodetectors and Lasers
Nanowires are truly one-dimensional structures that are long in one direction and short on the lateral dimension. This dimensional reduction gives rise to interesting new phenomena such as quantized ...
Laser Eye Surgeries: Excimer, Ultrafast and State of the Art
Understanding the emergence of New Developments Laser eye surgeries such as LASIK are used to treat a number of eye conditions including retinal tears and detachments, macular degeneration, and glaucoma. ...
Photodiodes: Detecting Photons with Electrons
Photoelectronic devices combine the vast use of electronics for processing information with the detection and the manipulation of light. Devices such as photodiodes are useful for detecting incoming light ...
Variable-Focus Adaptive Lenses for Presbyopia Correction
Introduction to Presbyopia As we grow older the lens of the eye becomes much more rigid, hindering the ability to properly focus light onto the retina. This condition, presbyopia, affects approximately two ...
Charge Coupled Devices and CMOS Sensors for Superior Imaging
Imaging tools help us see into the world that is not possible with our naked eyes. It was with the invention of the microscope and the telescope that big frontiers in science were reached. We unlocked the ...
Beam Profiling Systems and Their Applications
Beam profiling systems are an essential technology to ensure the quality and uniformity of lasers. Beam profilers measure the optical spatial intensity of an input laser beam, providing information about ...
Optical Myography: Detecting Hand Posture by Looking at Forearm
Optical myography is a technique that visually inspects the human forearm to determine the hand posture. Hand posture is a communication element as important as the language itself. Human hand gesture ...
Optical Vehicle to Vehicle Communication System: How It Works
Vehicle-to-vehicle (V2V) communication system enables vehicles to wirelessly exchange information about their speed, location, and traffic information. The technology behind V2V communication allows ...