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By Guest PostJuly 1, 2016Health, Sciencejoseph fox, randall duncan, tissue, tissue mimetic hydrogel, vibration, vibratory culture, vocal cords, xinqiao jia

Team to create realistic model of human vocal cords

Our vocal cords, two multilayered folds of tissue located above the trachea, produce voice when air passes between them and sets them into vibration. (more…)

Canal between Ears Helps Alligators Pinpoint Sound

By Guest PostApril 26, 2014Nature, Scienceakw tihange, alligators, bastian schiller, christopher robert, daphne soares, daria knoch, eardrum, euratom vertrag, gehirnprozesse, kernkraftwerk tihange, lehren aus fukushima, lorena gianotti, university of maryland, vibration, workplace relationships

COLLEGE PARK, Md. – By reptile standards, alligators are positively chatty. They are the most vocal of the non-avian reptiles and are known to be able to pinpoint the source of sounds with accuracy. But it wasn’t clear exactly how they did it because they lack external auditory structures.

In a new study, an international team of biologists shows that the alligator’s ear is strongly directional because of large, air-filled channels connecting the two middle ears. This configuration is similar in birds, which have an interaural canal that increases directionality. (more…)

Portable Diagnostics Designed To Be Shaken, Not Stirred

By Guest PostMay 12, 2012Scienceashutosh shastry, asymmetrical surface, audio speaker, blood, energy, hannah hickey, karl bohringer, lotus effect, lotus leaf, medical researcher, menlo park, Nanotechnology, portable diagnostics, rough surface, saliva, smartphone, todd duncombe, university of washington, vibration, vibration frequency, water sample, yegan erdem

As medical researchers and engineers try to shrink diagnostics to fit in a person’s pocket, one question is how to easily move and mix small samples of liquid.

University of Washington researchers have built and patented a surface that, when shaken, moves drops along certain paths to conduct medical or environmental tests.

“This allows us to move drops as far as we want, and in any kind of layout that we want,” said Karl Böhringer, a UW professor of electrical engineering and bioengineering. The low-cost system, published in a recent issue of the journal Advanced Materials, would require very little energy and avoids possible contamination by diluting or electrifying the samples in order to move them. (more…)

Researchers Capture First-Ever Images of Atoms Moving in a Molecule

By Guest PostMarch 8, 2012Scienceanthony dichiara, atmospheric gases, atoms, atoms nuclei, cosmin blaga, diffraction pattern, electron, emily sistrunk, energy, femtoseconds, flash bulb, kaikai zhang, laser induced electron diffraction, lied, louis dimauro, molecular motion, molecule, n2, nitrogen, o2, ohio state university, oxygen, pierre agostini, quadrillionths of a second, quantum trajectory, quantum world, real time image, scattered electron signal, solid material, terry a miller, ultrafast camera, vibration

COLUMBUS, Ohio – Using a new ultrafast camera, researchers have recorded the first real-time image of two atoms vibrating in a molecule.

Key to the experiment, which appears in this week’s issue of the journal Nature, is the researchers’ use of the energy of a molecule’s own electron as a kind of “flash bulb” to illuminate the molecular motion. (more…)

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Canal between Ears Helps Alligators Pinpoint Sound

Portable Diagnostics Designed To Be Shaken, Not Stirred

Researchers Capture First-Ever Images of Atoms Moving in a Molecule