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Accent on Applications News
Radiation-Hardened Cameras Aid in Nuclear Generator Refueling
Feb 1, 2002 — During a refuel outage of a nuclear power plant, all of the fuel assemblies in the reactor core are either replaced or moved to other locations in the core. Each of these fuel assembly moves, which may number more than 1000, must be verified by technicians who view the process with binoculars from the refueling bridge. The process not only is difficult, but also increases the potential for radiation exposure. A fuel assembly inspection system mounted in the reactor vessel examines fuel...
Spectroscopy Technique Reveals Strange Chemistry of a Frozen World
Feb 1, 2002 — Recent data from the Near Infrared Mapping Spectrometer aboard the Galileo spacecraft may support the hypothesis of a subsurface ocean on some of the jovian moon surfaces, such as Europa. Specifically, reflection spectra from the surface of this...
The Cathedral of St. Peter: A Work in Progress
Feb 1, 2002 — Architectural scholar Stephen Murray said that, in Gothic architecture, buildings are viewed as a triumphal process, every advance in technology resulting in a bigger building. St. Peter's Cathedral at Beauvais was the last -- and perhaps the...
Automation Comes to Beam Profiling
Jan 1, 2002 — The beam focusability factor, or M2, which is one of the most widely accepted values for establishing laser beam quality, involves a difficult and time-consuming process to quantify a single beam profile. However, if you're a manufacturer of Nd:YAG...
Diffractive Optic Monitors Float Glass Quality
Jan 1, 2002 — Laser measurement techniques are commonly used to monitor the thickness of float glass, but these approaches are subject to error because they use only one pair of reflected spots. A new laser technique using a diffractive optical element promises...
Lamp Reflectors Illuminate Tiny Chips
Jan 1, 2002 — As equipment companies such as JVC and Aurora migrate toward high-density 8-in.-diameter wafer sizes, chip sizes are becoming smaller and more difficult to illuminate. This creates new problems for optical designers. The dual-paraboloid design of...
Laser Technique Monitors Calcium
Jan 1, 2002 — Changes in cellular calcium concentration affect physiological activities such as muscular contraction and neural transmission, but researchers have been unable to resolve the mechanisms of transmission using chemical, electrical and mechanical...
Lasers Create Fashions to Dye For
Jan 1, 2002 — The garment industry has traditionally been a labor-intensive business that has profited relatively little from advances in photonics technology. However, a novel application of a CO2 laser is making an impression with clothing manufacturers such as...
Runway Light Calibration
Jan 1, 2002 — Each time an airplane touches down on a runway, it leaves a little bit of itself behind. A single 747, for example, deposits 7.5 lb of rubber whenever it lands. This rubber accumulates over time and can produce a film that coats landing lights,...
Infrared Diode Laser Excites Visible Fluorophores
Dec 1, 2001 — Many diagnostic and biological tests use antibodies or DNA probes, called markers, that bond to specific biological structures and fluoresce when excited by a specific optical wavelength. Typically, the fluorophores emit at a frequency longer than...
Laser Technique Analyzes Pharmaceuticals
Dec 1, 2001 — Lot consistency is a major concern in pharmaceutics. Constant testing of batches of tablets and capsules as they emerge from the production line ensures that patients receive a regular dosage that falls with-in a standard deviation of 5...
Single-Pixel Sensor Revs Up Mirrors
Dec 1, 2001 — Gentex makes about 7 million auto-dimming mirrors each year for major auto manufacturers. Despite these impressive numbers, the company is always looking for "major improvement in system cost and manufacturing," said Joe Stam, the company's lead...
Three-CCD Camera Captures Novelty Images
Dec 1, 2001 — For several years, amusement parks have been snapping photos of thrill seekers as they take the plunge on rides with names such as Traumatizer, Mind Eraser and Oblivion. The expressions of glee or terror captured in these prints make popular...
Microdisplays Keep Pilots Informed
Nov 1, 2001 — F-15E fighter aircraft control sophisticated systems such as advanced radar, tactical navigation, high-frequency communications and weapons. System designers organize the information that inundates the pilot by creating graphical displays such as...
More Cookies per Minute
Nov 1, 2001 — Pepperidge Farm has been using robotics for various manufacturing applications since the 1980s and has 85 robots in its production lines. However, most products are still hand-placed in paper cups from moving conveyor belts, and the cups...
Nd:YAG Lasers Simulate Lightning Strikes in Ecological Experiments
Nov 1, 2001 — Researchers at the Laboratorio de Química de Plasmas y Estudios Planetarios at the Universidad Nacional Autónoma de México are using laser-simulated lightning strikes to help them understand what happened to the Earth's atmosphere 4.5 billion to 2.2...
Photonics Maps Ground Zero
Nov 1, 2001 — Four days after the World Trade Center was annihilated in the worst terrorist attack in history, EarthData International was capturing images and using lasers to map the devastation. Digital and thermal cameras and lidar mapping produce stark...
16 Megapixels Drive Camera Back
Oct 1, 2001 — Traditional full-frame image sensors did not offer Phase One's professional camera customers the photoresponse that they required for their work. The traditional CCD's polysilicon gate structure absorbs too many of the incoming photons, which makes...
Bellows Improves Laser Resonator Seals
Oct 1, 2001 — The stability and reliability of the argon-ion laser has made it a workhorse for a range of applications from writing masks for semiconductor circuits to measuring the flow rate of cell protoplasm. As countless subtle improvements continue to...
Chip Rotation Doesn't Disorient Vision System
Oct 1, 2001 — Imaging integrated circuits is a simple enough task for today's machine vision technology, but problems emerge when a vision system also must identify microscopic details on slightly skewed dies at near-blinding speeds. It is not uncommon for...
In Situ Spectrometers Deliver Fast Solution
Oct 1, 2001 — Most pharmaceutical laboratories operate on limited time. Once patented, a new drug substance must navigate development and clinical trials before its manufacturer can see a return on its investment. The more sales made during the remaining life of...
Ordinary CCDs Survive Radiation Environments
Oct 1, 2001 — Charged with the responsibility of cleaning up one of the country's most dangerous toxic waste dumps, CH2M Hill Hanford Group began looking for inexpensive video camera systems that could resist flammable gas and radioactive environments. The...
Ambulance Mechanics Get an Eyeful
Sep 1, 2001 — Instant cameras, initially, were a boon to the auto repair industry, allowing mechanics who venture into unfamiliar territory to retrace their steps by reconstructing each phase of...
Sapphire Probes the Ocean’s Depths
Sep 1, 2001 — In vents in the seafloor of the Juan de Fuca Ridge off the coast of British Columbia and Washington state, a community of organisms thrives amid a seething cauldron of superheated ...
Stargazing for Better Communications
Sep 1, 2001 — For many reasons, it is not a trivial task to wire older buildings with optical fiber. Economic and physical obstacles combine to prevent many businesses from having access to high...
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June 2024
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