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2-D electronics take a step forward

Researchers at Rice University and Oak Ridge National Laboratory have advanced on the goal of two-dimensional electronics by controlling the growth of uniform atomic layers of molybdenum disulfide. The material is a semiconductor, one of three needed to make functioning 2-D electronic components.

SourceRice University·JournalNature Materials·DateJun 10, 2013

Cicadas get a jump on cleaning

Researchers discovered cicadas can use jumping droplets to remove contaminants from their wings, offering an alternative to conventional self-cleaning methods. This phenomenon works without relying on external forces or gravity.

SourceDuke University·JournalProceedings of the National Academy of Sciences·DateApr 29, 2013

Silicone liquid crystal stiffens with repeated compression

Rice University researchers have discovered that the liquid crystal phase of silicone becomes significantly stiffer when subjected to repeated compression. This breakthrough could lead to new strategies for self-healing materials, as well as biocompatible materials that mimic human tissues. The stiffening effect is reversible and occur...

SourceRice University·JournalNature Communications·DateApr 29, 2013

What's between a slip and a slide?

A new study from the University of Sheffield used a test machine to measure friction on tennis court surfaces, finding that sand particle size affects clay court friction, particularly when wet. The research aims to create international standards for court surfaces to inform players about court conditions and improve player safety.

SourceUniversity of Sheffield·JournalProceedings of the Institution of Mechanical Engineers Part P Journal of Sports Engineering and Technology·DateMar 27, 2013

Ultra-precision positioning

Researchers developed a novel rotary actuator that delivers more torque than previous devices, achieving four-fold improvements in loading torque and accuracy. The device uses piezoelectric material and a clamp with a changeable clamping radius to optimize power and control.

SourceAmerican Institute of Physics·JournalReview of Scientific Instruments·DateMar 25, 2013

Novel materials shake ship scum

Researchers have created a material that uses physical movement to knock away bacteria, reducing drag and improving energy efficiency on ships. The innovative solution avoids toxic chemicals often found in traditional antibacterial paints.

SourceDuke University·JournalAdvanced Materials·DateJan 31, 2013

'Molecular levers' may make materials better

Scientists have discovered a new type of molecular lever that can accelerate chemical reactions 1000 times faster than other molecules. This breakthrough has the potential to engineer more efficient materials with improved mechanical and thermal properties.

SourceDuke University·JournalNature Chemistry·DateDec 23, 2012

Stretchable electronics

Stretchable electronics are being developed to enhance device durability and functionality. Bingqing Wei's research group has made significant progress in creating scalable, stretchable power sources for flexible electronics using carbon nanotube macrofilms, polyurethane membranes and organic electrolytes.

SourceUniversity of Delaware·JournalNano Letters·DateDec 14, 2012

From microns to centimetres

University of Toronto researchers have developed a device that can create three-dimensional, functional tissues through a precise and controlled process. The technology uses biomaterials to form a 'mosaic hydrogel' sheet, onto which cells are seeded in specific placements, mimicking natural cell placement in living tissues.

SourceUniversity of Toronto·JournalAdvanced Materials·DateJul 31, 2012

Smart Materials get SMARTer

Researchers at University of Pittsburgh and Harvard University created self-regulating microscopic materials that can continuously sense and regulate temperature. The new material, called SMARTS, offers a customizable way to trigger chemical reactions on cue and reproduce stable feedback loops found in biological systems.

SourceUniversity of Pittsburgh·JournalNature·DateJul 11, 2012

Orangutan nest building shows high degree of sophistication

A new study by researchers at the University of Manchester found that orangutans build nests with a high degree of sophistication, using strong branches for structural parts and weaker ones for linings. The apes' choice of branch was dictated by its diameter and rigidity, indicating possible knowledge of mechanical properties.

SourceUniversity of Manchester·JournalProceedings of the National Academy of Sciences·DateApr 17, 2012

Center for Innovative Metal Processing created

The Penn State Applied Research Laboratory and Sciaky, Inc. have established the Center for Innovative Metal Processing through Direct Digital Deposition as a Manufacturing Demonstration Facility. The center aims to provide an advanced design and simulation tool in a shared network for industry participants to evaluate the technology.

New Notre Dame study examines density stratification on microorganisms in aquatic ecosystems

Researchers at the University of Notre Dame have found that density stratification has a significant impact on small organisms in aquatic ecosystems. Organisms near pycnoclines experience reduced risk of predation, affording a competitive advantage, which can lead to an accumulation of particles and alter environmental processes.

SourceUniversity of Notre Dame·JournalProceedings of the National Academy of Sciences·DateMar 6, 2012

Plasmas torn apart

Researchers Auna Moser and Paul Bellan observed a surprising phenomenon in lab experiments that provides clues to the origin of solar flares. The discovery reveals a connection between kink instability and Rayleigh-Taylor instability, which are two distinct phenomena occurring at different scales.