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Microscopy News
Optical Techniques Reveal Clues about Ancient ‘Comb Jelly’ Embryos
Jun 1, 2007 — The Meishucun assemblage of fossils in southwestern Shaanxi, China, documents the beginnings of the Cambrian explosion of animals roughly 540 million years ago — a period in which the diversity of skeletonized metazoans (multicellular animals that are more advanced than sponges) rose markedly and rapidly. A current understanding of the earliest radiation of the Cambrian development largely comes from the study of disconnected microscopic skeletal components — or “small shelly fossils” — that...
Photonics for Art’s Sake
Jun 1, 2007 — Art may be for art’s sake, but that doesn’t mean that paintings and other works of art can’t benefit from photonic-based tools and equipment. For example, the challenge of preserving and restoring artwork from the past and present is made easier by...
Reflection of Multilayered Surfaces Measured
Jun 1, 2007 — Beetles’ rigid forewings, called elytra, often display multilayered structures and iridescent metallic colors. As one might imagine, their refractive index proves hard to measure accurately. To help address this challenge, Joseph A. Noyes and...
Short Laser Pulses Facilitate Hybrid CARS Technique
Jun 1, 2007 — Although not a widespread disease, anthrax remains a central concern for many microbiologists because of its potential use as a bioweapon. Conventional spectroscopic methods, such as infrared absorbance and Raman, as well as surface-enhanced Raman...
Surprising Superconductor Behavior Mapped at Nanoscale
PRINCETON, N.J., June 1, 2007 -- A customized microscope has allowed the observation that patches of superconductivity can exist in ceramic superconductors at higher temperatures than previously thought, a discovery that may help improve scientific understanding of resistance-free...
Ultrabroadband Light Source Helps Pinpoint Structure of Organic Semiconductors
Jun 1, 2007 — Organic semiconductor materials — used to make photovoltaic cells, LEDs and similar devices — can be quickly and efficiently made but often have surfaces composed of both amorphous and crystalline material states. They would perform better if they...
Ultrafast Laser Achieves Quill-like Writing
Jun 1, 2007 — Lasers have been used for years to inscribe words and other designs. But things are starting to get a little fancy. By using ultrashort light pulses on transparent materials such as silica glass, researchers have achieved a calligraphic style of...
Veeco Instruments, Leica Microsystems Ally for Research
Jun 1, 2007 — Veeco Instruments Inc. of Woodbury, N.Y., a supplier of nanoscience instrumentation, and Leica Microsystems GmbH of Wetzlar, Germany, a manufacturer of optical microscopy imaging systems, have formed a collaboration to improve research techniques in...
Physicists, Radiologists Team to Improve PET Scans
CHICAGO, May 31, 2007 -- Electronics are being developed for identifying subatomic particles in high-energy accelerators that may also enable radiologists to detect cancer at an earlier, more curable stage. "The electronics needs in medical imaging look very closely...
Study Urges Nano Oversight
WASHINGTON, May 23, 2007 -- Although the general public continues to know little to nothing about nanotechnology -- the manipulation of matter on an atomic scale -- the number of consumer products containing some aspect of it has now surpassed 450 and is increasingly rapidly,...
Photosensitizers Use IR Source
SOCORRO, N.M., May 16, 2007 -- A new agent to treat certain cancers uses the unique light-emitting properties of specific nanoparticles to deliver tiny, yet therapeutic, dosages of antibodies and reactive oxygen to individual tumor cells or clusters of cells, without affecting...
Gooch & Housego Buys Sifam
ILMINSTER, England, May 11, 2007 -- Optical components and systems manufacturer Gooch & Housego plc announced this week it has acquired Sifam Fibre Optics Ltd. for £5 million (about $10 million) in a cash-and-stock deal. Sifam manufactures passive and active fiber-optic...
London Nanotech Center Appoints Co-Director
May 11, 2007 — The London Centre for Nanotechnology (LCN) announced it has appointed David McComb, PhD, reader in materials characterization at Imperial College London, as its co-director. McComb will lead LCN, a nanotech joint venture between Imperial and...
’Breaking Barriers’ 2007 CLEO/QELS Theme
BALTIMORE, Md., May 10, 2007 -- New optics concepts and phenomena that rely on 20th-century optics are recently becoming part of researchers’ fundamental tools, said Ben Stein, a senior science writer and editor at the American Institute of Physics who moderated a panel,...
’Breaking Barriers’ 2007 CLEO/QELS Theme
BALTIMORE, Md., May 10, 2007 -- New optics concepts and phenomena that rely on "classical" optics are recently becoming part of researchers’ fundamental tools, said Ben Stein, a senior science writer and editor at the American Institute of Physics who moderated a panel, "New...
Agilent Technologies Creates Unit
May 1, 2007 — Agilent Technologies Inc. of Santa Clara, Calif., has announced its establishment of the Materials Science Solutions unit within its Life Sciences and Chemical Analysis business. The unit will concentrate on the development of a microscopy and...
Annealing and Activating Silicon Nanowires with a Laser
May 1, 2007 — In electronics, smaller is almost always better. That has been further illustrated by a recent study on annealing silicon nanowires by University of California, Berkeley, researchers in collaboration with Nanosys Inc. of Palo Alto, Calif. Silicon...
Are Quantum Dots on the Brink of Their Big Break?
May 1, 2007 — The period at the end of this sentence would be colossal next to a quantum dot — like a flea clinging to a good-size dog. As many as a million quantum dots could perhaps fit within the narrow confines of this circle: o. In other words, quantum...
Identifying Atoms by Feel
May 1, 2007 — Atomic force microscopes (AFMs) and other scanning probe devices can map surfaces on an atomic scale but have not been able to distinguish one type of atom from another using purely mechanical means. Now researchers have used an AFM to identify...
Laser Heat Forms Nanobubbles
May 1, 2007 — Boiling water was thought to be a well-understood phenomenon until we entered the age of nanomaterials. Now the concept of nanobubbles, which collect on a surface when it is heated to boiling, is under study. A team from the National Institute of...
Light Controls Actuators
May 1, 2007 — For years, chemists have tried to make materials that change shape in directed ways, but, for the most part, they have succeeded only in creating materials that move in a disorderly fashion. If materials are too rigid, they may break easily, and if...
Nanoscale ‘Pins’ Enhance SERS
May 1, 2007 — Surface-enhanced Raman spectroscopy (SERS) is still a young technique, but it shows promise for elemental and chemical analysis in the semiconductor and biology fields, among others. It has been well established that using silver or gold nanoscale...
Science Student Scores with Spectrograph
May 1, 2007 — It’s safe to assume that the average teenager has, at best, only a vague idea of what a spectrograph is, never mind how the precision instrument really works. But 17-year-old Mary Masterman, a senior at Westmoore High School in Oklahoma City, is...
Seeing Smaller Features with Surface Plasmons
May 1, 2007 — Imaging using surface plasmon resonance — electron oscillations induced by light at a metal/dielectric interface — can reveal hidden features such as minute changes in biochemical structures. However, surface plasmon resonance imaging can be fuzzy...
Selecting the Appropriate Optical Mount
May 1, 2007 — When engineers are choosing optics, a common mistake they make is overlooking the integration of optical mounts into their systems. There are a variety of mounts available for holding lenses, prisms, mirrors, filters and other optical components....
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July 2024
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