14 Current news of American Institute of Physics

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Mechanism of dengue virus entry into cells

19-02-2014

Dengue fever, an infectious tropical disease caused by a mosquito-borne virus, afflicts millions of people each year, causing fever, headache, muscle and joint pains and a characteristic skin rash. In some people the disease progresses to a severe, often fatal, form known as dengue hemorrhagic ...

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Designing an acoustic diode

Novel design for a device that would transmit sound in 1-way may lead to brighter, clearer ultrasound images and improve diagnosis and therapy

05-11-2013

Most people know about ultrasound through its role in prenatal imaging: those grainy, grey outlines of junior constructed from reflected sound waves. A new technology called an "acoustic diode," envisioned by researchers in China's Nanjing University, may dramatically improve future ultrasound ...

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Measuring blood sugar with light

29-10-2013

One of the keys to healthful living with Type 1 and Type 2 diabetes is monitoring blood glucose (sugar) levels to ensure they remain at stable levels. People can easily and reliably do this at home using electronic devices that read sugar levels in a tiny drop of blood. Now a team of German ...

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Salmonella sensing system

A new approach to detecting food contamination enables real-time testing of food and processing plant equipment

22-10-2013

As anyone who has ever consumed bacteria-contaminated food and experienced "food poisoning" can tell you, it's a miserable experience. Yet it's an all-too-common one, with foodborne illnesses making 1 in 6 Americans -- or 48 million people -- sick each year. Of these people sickened, 128,000 end ...

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Computer model predicts red blood cell flow

15-08-2013

Adjacent to the walls of our arterioles, capillaries, and venules -- the blood vessels that make up our microcirculation -- there exists a peculiar thin layer of clear plasma, devoid of red blood cells. Although it is just a few millionths of a meter thick, that layer is vital. It controls, for ...

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Capturing live tumor cells in the blood

12-08-2013

Tumor cells circulating within a patient's bloodstream can carry cancer from a primary tumor site to distant sites of the body, spreading the disease. Now a team of researchers in China has developed a new microfluidic chip that can quickly and efficiently segregate and capture live circulating ...

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Near-atomically flat silicon could help pave the way to new chemical sensors

30-10-2012

Silicon is the workhorse of the electronics industry, serving as the base material for the tiny transistors that make it possible for digital clocks to tick and computers to calculate. Now scientists have succeeded in creating near-atomically flat silicon, of the orientation used by the ...

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Virus detector harnesses ring of light in 'whispering gallery mode'

27-08-2012

By affixing nanoscale gold spheres onto a microscopic bead of glass, researchers have created a super-sensor that can detect even single samples of the smallest known viruses. The sensor uses a peculiar behavior of light known as "whispering gallery mode," named after the famous circular gallery ...

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Elemental and magnetic imaging using X-rays and a microscope

15-06-2012

A team of researchers has developed a new microscope that can image the elemental and magnetic properties of a wide range of energy-important materials that are used in devices such as solar cells and solid-state lighting. The imager is based on a technique known as X-ray excited luminescence ...

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New way of detecting concealed radioactive material

University of Maryland researchers propose method to sniff out dirty bombs via the electromagnetic breakdown of air

15-11-2010

Researchers at the University of Maryland have proposed a scheme for detecting a concealed source of radioactive material without searching containers one by one. Detection of radioactive material concealed in shipping containers is important in the early prevention of "dirty" bomb construction. ...

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