Currently, tissue engineering has been limited to growing small pieces of tissue, because larger dimensions reduce the oxygen supply to the cells in the center of the tissue.
June 18, 2015
Nicky Ashwell has become the first UK user to receive what the makers call “the world’s most lifelike hand” — the Stepper bebionic small. The myoelectric device uses miniaturized components designed to provide true-to-life movements, mimicking the functions of a real hand.
The Bebionic small hand works using sensors triggered by the user’s muscle movements that connect to individual motors in each finger and microprocessors.… read more
June 18, 2015
UC Berkeley researchers have developed a low-cost, easy method of biocontainment of bacteria to contain accidental spread of genetically modified organisms (GMOs). The used a series of lock-and-key genetic mutations (in addition to the GMO mutations) that render the microbe inactive unless the right molecule (the key) is added to to the expressed protein to enable its viability.
The work appears this week in the journal ACS Synthetic… read more
An exotic property that could warp the electronic structure of a material to reduce heat buildup and improve performance in ever-smaller computer components has been observed for the first time in X-ray studies with at the Stanford Synchrotron Radiation Lightsource (SSRL) at the Department of Energy’s SLAC National Accelerator Laboratory.
Heat is an obstacle to packing more computing power into ever-smaller devices; excess heat can cause devices to… read more
June 17, 2015
The first on-chip visible light source using graphene as a filament has been developed by a team of scientists from Columbia Engineering, Seoul National University (SNU), and Korea Research Institute of Standards and Science (KRISS).
The scientists attached small strips of graphene to metal electrodes, suspended the strips above the silicon substrate, and passed a current through the filaments to cause them to heat… read more
ETH Zurich and Technion researchers have developed an elastic “nanoswimmer” polypyrrole (Ppy) nanowire about 15 micrometers (millionths of a meter) long and 200 nanometers thick that can move through biological fluid environments at almost 15 micrometers per second. To propel the nanowire “tail,” two hinged ferromagnetic nickel sections of the wire undulate, controlled by an oscillating magnetic field, causing the tail to allow also undulate and move forward.
The nanoswimmers… read more
As hemp makes a comeback in the U.S. after a decades-long ban on its cultivation, scientists are reporting that fibers from the plant can pack as much energy and power as graphene, long-touted as the model material for supercapacitors, according to David Mitlin, Ph.D.
Supercapacitors are energy storage devices that have huge potential to transform the way future electronics are powered. Unlike today’s rechargeable batteries, which sip up energy… read more
German and U.S. researchers have decoded natural continuously spoken speech from brain waves and transformed it into text — a step toward communication with computers or humans by thought alone.
Their “Brain-to-Text” system recorded signals from an electrocorticographic (ECoG)* electrode array located on relevant surfaces of the frontal and temporal lobes of the cerebral cortex of seven epileptic patients, who participated voluntarily in the study during their… read more
According to Samir Mathur. professor of physics at The Ohio State University, the recently proposed idea that black holes have “firewalls” that destroy all they touch is wrong. He believes that a black hole converts anything that touches it into a hologram — a near-perfect copy of itself that continues to exist just as before.
June 15, 2015
A decade of work at Johns Hopkins has yielded a computer program that predicts, with far more accuracy than current methods, which mutations are likely to have the largest effect on the activity of the “dimmer switches” (which alter the cell’s gene activity) in DNA — suggesting new targets for diagnosis and treatment of many diseases.
June 15, 2015
Researchers in Canada and the U.K. have sequenced and assembled de novo (from the ground up) the full genome of a living organism, the bacteria Escherichia Coli, using Oxford Nanopore’s MinION device, a genome sequencer that can fit in the palm of your hand.
The findings, published today in the journal Nature Methods, provide proof of concept for the new genome sequencer technology.
The researchers expect to use… read more
June 12, 2015
Sergiu Pasca, M.D., of Stanford University and colleagues have developed “human cortical spheroids” — miniature cultured 3-D structures that grow and function much like the cortex of the brain of the person from whom they were derived.
These “organoids” (3-D complexes of cells that function like an organ) buzz with neuronal network activity. Cells talk with each other in circuits, much as they do in our brains.… read more
Researchers at Missouri University of Science and Technology have developed a “no-ink” color printing process using nanomaterials, with features visible only with the aid of a high-powered electron microscope.
The researchers describe their printing method in an open-access article in the latest issue of Nature Publishing Group’s Scientific Reports and illustrate their technique by reproducing the Missouri S&T athletic logo on a nanometer-scale surface.… read more
June 11, 2015
University of Cincinnati and university and industry partners have developed a technology for tunable window tinting that dynamically adapts for brightness, color temperatures (such as blueish or yellowish light), and opacity (to provide for privacy while allowing 90 percent or more of the light in), adjustable by the user.
According to the researchers, these “smart windows” are would be simple to manufacture, making them affordable for business… read more
June 11, 2015
Cornell University engineers have created a functional, synthetic immune organoid (a lab-grown ball of cells with some of the features of a normal organ) that produces antibodies. The engineered organ has implications for everything from rapid production of immune therapies to new frontiers in cancer or infectious disease research.
The first-of-its-kind immune organoid was created in the lab of Ankur Singh, assistant professor of mechanical and aerospace engineering, who applies… read more