Pennsylvania State University

Acoustic tweezers can position tiny objects

(PhysOrg.com) -- Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough to place on a chip, ...

dateAug 28, 2009 in Nanomaterials
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SAD affects many through winter months

For many, the changing of the seasons means cozy dark evenings of winter and enjoying holiday light displays. But perhaps for you, the shortening of the days signals a time when you feel down, sad or withdrawn. You may notice ...

dateFeb 18, 2011 in Psychology & Psychiatry
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