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Researchers ‘Nanoweld’ by Applying Light to Aligned Nanorods in Solid Materials

By Guest PostMarch 9, 2013Scienceabsorb, fibers, gold nanorods, heat, infrared spectrum, jason bochinski, joe tracy, krystian kozek, laura clarke, light, light wavelengths, mechanical characteristics, melt, nanometers, nanoparticles, nanoscale, nm, north carolina state university, polymers, researcher, resilient nanofibers, sigma xi, somsubhra maity, wavelengths, weld, wie chen wu

Researchers from North Carolina State University have developed a way to melt or “weld” specific portions of polymers by embedding aligned nanoparticles within the materials. Their technique, which melts fibers along a chosen direction within a material, may lead to stronger, more resilient nanofibers and materials.

Physicists Jason Bochinski and Laura Clarke, with materials scientist Joe Tracy, placed specifically aligned gold nanorods within a solid material. Gold nanorods absorb light at different wavelengths, depending upon the size and orientation of the nanorod, and then they convert that absorbed light directly into heat. In this case, the nanorods were designed to respond to light wavelengths of 520 nanometers (nm) in a horizontal alignment and 800 nm when vertically aligned. Human beings can see light at 520 nm (it looks green), while 808 nm is in the near infrared spectrum, invisible to our eyes. (more…)

New Opportunities for Crystal Growth

By Guest PostMarch 6, 2013Scienceberkeley lab, characterization, crystal growth, crystal growth facility, crystal is unique, crystal purification, doe, edith bourret courchesne, emit gamma, energy resolution, enriched uranium, fibers, formation of snowflake, germanium crystals, growth, luminosity, material scientist, nanocrystals, new opportunities, nnsa, nuclear materials. plutonium, polycrystalline form, scintillation properties, semiconductor germanium, single crystals, source of radiation, synthesis of crystals, thin epitaxial films, trial and error, united states, useful crystals

Berkeley Lab Facility Provides Unique Capabilities for the Synthesis of New Crystals and Materials

Talk with material scientist Edith Bourret-Courchesne about what it takes to grow and develop useful crystals and a word you will hear repeated often is “patience.” As the leader of a unique crystal growth facility at Lawrence Berkeley National Laboratory (Berkeley Lab) dedicated to the synthesis of crystals and new materials, patience is more than a virtue, it’s a necessity.

“The growth of every crystal is unique, like the formation of a snowflake, and since we work with compounds that have never before been crystallized the processes by which we grow our crystals are also unique,” she says. “As a result, a lot of our research is aimed at understanding why something didn’t work.” (more…)

Virus Caught in the Act of Infecting a Cell

By Guest PostJanuary 12, 2013Health, Scienceaustin, bacterium, bo hu, cryo electron tomography, ct scan, e coli, experimental evidence, feelers, fibers, genetic, genetic material, head, human hair, ian molineux, image, infect, infect a cell, infected cell membrane, infection, infection process, jun liu, protein, protein path, robot like process, structure, t7, texas, thickness, university, ut health, viral dna, virus, visualize, william margolin

About the video: watch an animation showing the changes in the structure of a T7 virus as it infects an E. coli bacterium.

AUSTIN, Texas — The detailed changes in the structure of a virus as it infects an E. coli bacterium have been observed for the first time, report researchers from The University of Texas at Austin and The University of Texas Health Science Center at Houston (UT Health) Medical School this week in Science Express. (more…)

Electrically Spun Fabric Offers Dual Defense Against Pregnancy, HIV

By Guest PostDecember 5, 2012Healthafrica, against, antibodies, antivirals, bill, cameron ball, condom, contraception, drugs, electrospinning, emily krogstad, fibers, fluid jet, gates foundation, gels, geometry, gooey solution, heat sensitive molecules, hiv, hiv expert, hiv infection, kim woodrow, melinda, nanometer scale, pills, pregnancy, protect, sexually transmitted disease, sexually transmitted infection, sperm, tablets, Technology, thanyanan chaowanachan, treat hiv, university, vaccine, Washington

The only way to protect against HIV and unintended pregnancy today is the condom. It’s an effective technology, but not appropriate or popular in all situations.

A University of Washington team has developed a versatile platform to simultaneously offer contraception and prevent HIV. Electrically spun cloth with nanometer-sized fibers can dissolve to release drugs, providing a platform for cheap, discrete and reversible protection. (more…)

Bacteria Make Thrift a Habit

By Guest PostAugust 26, 2010Scienceamino acids, bacteria, bacterial protein, bacterium, balance function, curli, daniel smith, e coli, economic cost, escherichia coli, fibers, flagellu, glycine, illness, matthew chapman, mbio, metabolic, microbes, proteins, smith and chapman, ssga, university of michigan

ANN ARBOR, Mich.— In these lean times, smart consumers refuse to pay a lot for throwaway items, but will shell out a little more for products that can be used again and again. The same is true of bacteria and other microbes, researchers at the University of Michigan have learned.

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Tag Archives: fibers

Researchers ‘Nanoweld’ by Applying Light to Aligned Nanorods in Solid Materials

New Opportunities for Crystal Growth

Virus Caught in the Act of Infecting a Cell

Electrically Spun Fabric Offers Dual Defense Against Pregnancy, HIV

Bacteria Make Thrift a Habit