Molecular ruler sets bacterial needle length
When a salmonella bacterium attacks a cell, it uses a nanoscopic needle to inject it with proteins to aid the infection. If the needle is too short, the cell won't be infected. Too long, and the needle breaks. ...
Israeli wins chemistry Nobel for quasicrystals (Update 3)
Israeli scientist Dan Shechtman was awarded the Nobel Prize in chemistry on Wednesday for a discovery that faced skepticism and mockery, even prompting his expulsion from his U.S. research team, before it ...
Vaccine-delivery patch with dissolving microneedles eliminates 'sharps,' boosts protection
A new vaccine-delivery patch based on hundreds of microscopic needles that dissolve into the skin could allow persons without medical training to painlessly administer vaccines - while providing improved immunization ...
Laser-powered 'needle' promises pain-free injections
From annual flu shots to childhood immunizations, needle injections are among the least popular staples of medical care. Though various techniques have been developed in hopes of taking the "ouch" out of ...
Needle beam could eliminate signal loss in on-chip optics
(Phys.org)—An international, Harvard-led team of researchers have demonstrated a new type of light beam that propagates without spreading outwards, remaining very narrow and controlled along an unprecedented ...
Archaeologists uncover oldest prehistoric town in Europe
Researchers peek at the forgotten component of light
(Phys.org) —Physicists from FOM institute AMOLF have for the first time simultaneously measured the electrical and magnetic fields of light. With such a measurement scientists can better understand the ...
Nanorod-assembled order affects diffusion rate and direction
Some of the recent advancements in nanotechnology depend critically on how nanoparticles move and diffuse on a surface or in a fluid under non-ideal to extreme conditions. Georgia Tech has a team of researchers ...
Device may inject a variety of drugs without using needles
Getting a shot at the doctor’s office may become less painful in the not-too-distant future.
Preparing a homogenous haystack
(PhysOrg.com) -- What if you could turn the whole haystack into needles? Instead of hunting for one item, youd have 10 billion of the desired items laid out neatly in front of you. Thats what researchers ...
On quills and needles: Prickly porcupine is a muse for future medical devices
Researchers from Brigham and Women's Hospital (BWH) have uncovered how North American porcupine quills easily penetrate tissues and why, once lodged in flesh, they are often difficult to remove.
New technique scales up nanofiber production
(PhysOrg.com) -- A new spin on an old technology will give scientists and manufacturers the ability to significantly increase their production of nanofibers, according to researchers at North Carolina State University.
Scientists target mess from Christmas tree needles
The presents are unwrapped. The children's shrieks of delight are just a memory. Now it's time for another Yuletide tradition: cleaning up the needles that are falling off your Christmas tree.
Nano-needles can force medicine into cells, even when they resist taking it
Physicist Pawel Sikorski and his group are making beds of nails on a miniature scale – a plate covered in nano-needles designed to puncture individual cells.