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Microscopy News
Cavity-Enhanced Evanescent Waves Trap Microparticles
Aug 1, 2006 — Like surfers riding an ocean swell, micron-size particles respond to light and can be trapped and arranged in regular patterns. However, it has been difficult to produce a strong enough optical interaction to achieve this micromanipulation over large areas. Now scientists at the University of St. Andrews in the UK have demonstrated a potential solution, using a dielectric resonator and a prism coupler to create Fabry-Perot-like cavity modes that increase the force exerted by evanescent...
Confocal Raman Microscopy Studies Drug-Membrane Interactions
Aug 1, 2006 — Investigating drug-membrane interactions, such as a drug’s ability to pass through a membrane or to bind to proteins within it, helps researchers understand the effects of drugs on membrane functions. Christopher B. Fox, Robert A. Horton and Joel M....
Near-Field Technique Spectrally Maps Nanoparticles and Viruses
Aug 1, 2006 — Apertureless near-field scanning optical microscopy produces high-resolution optical images by irradiating with a laser an atomic force microscope (AFM) probe in proximity to a sample to create a concentrated near-field spot of illumination at the...
New Imaging Method Uses Helium Atoms
EUGENE, Ore., Aug. 1, 2006 -- A newly devised nozzle fitted with a pinhole-sized capillary has allowed researchers to distribute helium atoms with x-ray-like waves on randomly shaped surfaces. The technique could power the development of a new microscope for nanotechnology,...
Oligomeric Derivatives Yield Efficient Blue OLED
Aug 1, 2006 — In the pursuit of better blue-emitting materials for organic LEDs (OLED), scientists in China have fabricated emitters based on derivatives of oligo(phenylenevinylene) that display CIE color coordinates of (0.154, 0.255) and a luminous efficiency of...
Optical Limiting in Metal Nanowires Studied
Aug 1, 2006 — Optical limiters transmit low-intensity but block high-intensity light, making them suitable for use in applications such as the protection of sensors and the human eye from laser radiation. In the pursuit of alternative material for such devices,...
Planar Waveguide Transmits Mid-Infrared Radiation
Aug 1, 2006 — Because so many molecules have unique spectral signatures in the mid-infrared — generally defined as those wavelengths between several microns and several tens of microns — the evolution of integrated mid-IR components would be beneficial for the...
Portable Fiber Laser Cleans Ancient Tomb
Aug 1, 2006 — The conservation of an Egyptian tomb is a delicate, painstaking process. Dirt must be removed without damaging the fragile surfaces of the walls. In some cases, the grime is attached so firmly to the surface that even conventional hand-cleaning...
Technique Combines Atomic Force Microscopy with Near-Field Optical Imaging
Aug 1, 2006 — As increasing attention is given to manipulating the structure and function of nanoscale materials, there is a simultaneously growing need for an improved understanding of nanoscale physics. Although optical microscopy has been a valuable tool for...
Biotech Startup Granted $1.65M for 'Molecular Beacon'
ATLANTA, July 31, 2006 -- A company co-founded by a Georgia Institute of Technology researcher has received a $1.65 million federal grant to develop and commercialize a nanoscale sensor called a “molecular beacon” for the detection and diagnosis of diseases including cancer....
FEI Launches Helios NanoLab DualBeam
CHICAGO, July 31, 2006 -- FEI Co. of Hillsboro, Ore., is launching its Helios NanoLab DualBeam focused ion beam and scanning electron microscope at Microscopy and Microanalysis 2006, being held this week in Chicago. The Helios NanoLab features a new ultrahigh-resolution...
'Magnetic Semiconductors' Built, Atom by Atom
IOWA CITY, Iowa, & PRINCETON, N.J., July 28, 2006 -- By using a new technique to replace atoms in a semiconductor with metal atoms -- one atom at a time using a scanning tunneling microscope -- scientists have assembled a magnetic semiconductor. The first-of-its-kind achievement could speed the...
Kania Named President, CEO of FEI Co.
Jul 25, 2006 — FEI Co. of Hillsboro, Ore., announced today that Don R. Kania has been named president, CEO and a FEI board member by its board of directors. Kania, PhD, most recently has been president and COO of metrology and process equipment maker Veeco...
Scientists Turn Graphite into Graphene
EVANSTON, Ill., July 24, 2006 -- Researchers have developed a way to turn graphite into graphene, one-atom-thick sheets of carbon that can be mixed into other materials such as glass and ceramics to manipulate properties such as strength and thermal conductivity. The method,...
Light Shed on Superfluidity
CAMBRIDGE, Mass., July 21, 2006 -- For the first time, scientists have directly observed the transition of a gas to a superfluid, a form of matter closely related to the superconductors that allow electrical currents to travel without resistance. Such observations may help solve...
Asylum Research Expands Operations in the UK
Jul 12, 2006 — Asylum Research of Santa Barbara, Calif., a manufacturer of atomic force microscopes (AFMs) and other advanced scientific instrumentation, has formed Asylum Research UK Ltd., a company that will distribute and support its AFM products in the UK and...
Ultrasharp Single-Atom Tips Could Improve Microscopy
EDMONTON, Alberta, July 12, 2006 -- New ultrasharp, single-atom tips created through a unique process could improve electron microscopy to a level that would make solutions possible to research problems currently just out of reach, its developers said. Scientists from the...
'Fantastic Voyage' to Approach Sci-Fi Realm
LEICESTER, England, July 7, 2006 -- A three-nation consortium is planning a "fantastic voyage" to explore empty space -- with potential benefits that have previously been explored only in science fiction. The program, Nanocase, will use the ultrahigh vacuum atomic force microscope...
'Nanoshells' Meter Measures pH in Living Cells
HOUSTON, Texas, July 6, 2006 -- Using unique nanoparticles that convert laser light into useful information, scientists have created the first nanosized pH meter. The discovery presents biologists with the first potential means of measuring accurate pH changes in real-time, inside...
Siskiyou 2006 Lab Products Catalog Released
Jul 6, 2006 — Siskiyou Corp. has released its 2006 catalog of laboratory mechanical components, life science research products and photonics components. Included are new one-piece flexure-based optical mounts, a single-mode fiber coupler, a high-speed optical...
Cryogenic Laser Photolithography Finds Quantum Dot Registration
Jul 1, 2006 — In quantum dot information processing, it is critical to be able to register the position of a single quantum dot with respect to the antinode of a defect (missing hole) in a photonic crystal to create strong coupling and cavity quantum...
Feedback-Based Imaging Enables Miniature Scanning Confocal Microscopes
Jul 1, 2006 — As part of their work toward the development of a handheld scanning confocal microscope, researchers at Institut Femto-ST (Franche-Comté Electronique Mecanique Thermique et Optique — Sciences et Technologies) at Université de Franche-Comté in...
Fourier Transform Infrared Spectroscopy Exposes Self-Assembly
of Mesoporous Thin Films
Jul 1, 2006 — The low index of refraction and ultralow dielectric constant of mesoporous ceramic thin films make the materials of interest for a variety of applications in optics and electronics. Now a spectroscopic technique has demonstrated the ability to...
FRET FILTERS
Jul 1, 2006 — Available from Omega Optical is the FRET technical application note “Optimizing Filter Sets for FRET Applications.” Downloadable from the company Web site, the four-page document begins with an overview of the Förster resonance energy transfer...
Measuring 3-D Semiconductor Packaging
Jul 1, 2006 — Since the early 1900s, science and industry professionals have been using optical measurement and inspection for a clearer view of their products for research, development and manufacturing. These techniques of observing, measuring and analyzing...
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July 2024
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