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Environmentally friendly lignin nanoparticle 'greens' silver nanobullet to battle bacteria

15-Jul-2015

North Carolina State University researchers have developed an effective and environmentally benign method to combat bacteria by engineering nanoscale particles that add the antimicrobial potency of silver to a core of lignin, a ubiquitous substance found in all plant cells. The findings introduce ...

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Penn engineers show how 'perfect' materials begin to fail

10-Jun-2015

Crystalline materials have atoms that are neatly lined up in a repeating pattern. When they break, that failure tends to start at a defect, or a place where the pattern is disrupted. But how do defect-free materials break?Until recently, the question was purely theoretical; making a defect-free ...

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New sensing tech could help detect diseases, fraudulent art, chemical weapons

03-Jun-2015

From airport security detecting explosives to art historians authenticating paintings, society's thirst for powerful sensors is growing. Given that, few sensing techniques can match the buzz created by surface-enhanced Raman spectroscopy (SERS).Discovered in the 1970s, SERS is a sensing technique ...

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New technique speeds nanoMRI imaging

Multiplexing technique for nanoscale magnetic resonance imaging cuts normal scan time from two weeks to two days

01-Jun-2015

NanoMRI is a scanning technique that produces nondestructive, high-resolution 3-D images of nanoscale objects, and it promises to become a powerful tool for researchers and companies exploring the shape and function of biological materials such as viruses and cells in much the same way as ...

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One step closer to a single-molecule device

28-May-2015

Under the direction of Latha Venkataraman, associate professor of applied physics at Columbia Engineering, researchers have designed a new technique to create a single-molecule diode, and, in doing so, they have developed molecular diodes that perform 50 times better than all prior designs. ...

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Nanotubes with 2 walls have singular qualities

Rice University lab calculates unique electronic qualities of double-walled carbon nanotubes

20-Apr-2015

Rice University researchers have determined that two walls are better than one when turning carbon nanotubes into materials like strong, conductive fibers or transistors.Rice materials scientist Enrique Barrera and his colleagues used atomic-level models of double-walled nanotubes to see how they ...

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Solving molybdenum disulfide's 'thin' problem

Research team increases material's light emission by twelve times

01-Apr-2015

The promising new material molybdenum disulfide (MoS2) has an inherent issue that's steeped in irony. The material's greatest asset - its monolayer thickness - is also its biggest challenge.Monolayer MoS2's ultra-thin structure is strong, lightweight, and flexible, making it a good candidate for ...

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DNA origami could lead to nano 'transformers' for biomedical applications

Tiny hinges and pistons hint at possible complexity of future nano-robots

07-Jan-2015

If the new nano-machines built at The Ohio State University look familiar, it's because they were designed with full-size mechanical parts such as hinges and pistons in mind. The project is the first to prove that the same basic design principles that apply to typical full-size machine parts can ...

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Researchers discover boron 'buckyball'

16-Jul-2014

The discovery 30 years ago of soccer-ball-shaped carbon molecules called buckyballs helped to spur an explosion of nanotechnology research. Now, there appears to be a new ball on the pitch. Researchers from Brown University, Shanxi University and Tsinghua University in China have shown that a ...

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The world's smallest, fastest nanomotor

22-May-2014

Researchers at the Cockrell School of Engineering at The University of Texas at Austin have built the smallest, fastest and longest-running tiny synthetic motor to date. The team's nanomotor is an important step toward developing miniature machines that could one day move through the body to ...

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