Mechanical Engineering

Results 81 - 100 of 326.

Physics - Mechanical Engineering - 28.06.2017
A levitated nanosphere as an ultra-sensitive sensor
A levitated nanosphere as an ultra-sensitive sensor
Sensitive sensors must be isolated from their environment as much as possible to avoid disturbances.

Life Sciences - Mechanical Engineering - 14.06.2017
Using Light to Reach Higher Precision in Cell Mechanic Research
Using Light to Reach Higher Precision in Cell Mechanic Research
Not only muscle cells, but also all other cell types continually generate forces in the human body. An interdisciplinary cooperation of biologists and physicists including Heidelberg researcher Ulrich Schwarz now succeeded in performing high-resolution measurements of cell forces using light to switch them on and off in a controlled manner.

Health - Mechanical Engineering - 31.05.2017
Motor neuron disease discovery offers new insights into potential treatment targets
Motor neuron disease discovery offers new insights into potential treatment targets
Scientists have discovered how certain forms of motor neuron disease begin and progress at cellular and molecular levels, revealing potential new ways to slow down or even stop this process. The team are already working closely with pharmaceutical companies to use this knowledge to develop new treatments for motor neuron disease and other neurodegenerative conditions.

Mechanical Engineering - Mathematics - 23.05.2017
New way to test self-driving cars could cut 99.9 percent of validation costs
ANN ARBOR?Mobility researchers at the University of Michigan have devised a new way to test autonomous vehicles that bypasses the billions of miles they would need to log for consumers to consider them road-ready. The process, which was developed using data from more than 25 million miles of real-world driving, can cut the time required to evaluate robotic vehicles' handling of potentially dangerous situations by 300 to 100,000 times.

Physics - Mechanical Engineering - 17.05.2017
Testing Quantum Technologies
Scientists from Freie Universität, University of Innsbruck, University of Cologne, and University of Sydney Developed New Method ' 123/2017 from May 17, 2017 Together with colleagues from Germany, Austria, and Australia, scientists from Freie Universität Berlin developed a new method for investigating quantum mechanical processes, and they tested their method experimentally.

Mechanical Engineering - 11.05.2017
Structure and mechanics of aegagropilae fiber network
Structure and mechanics of aegagropilae fiber network
Abstract Fiber networks encompass a wide range of natural and manmade materials. The threads or filaments from which they are formed span a wide range of length scales: from nanometers, as in biological tissues and bundles of carbon nanotubes, to millimeters, as in paper and insulation materials. The mechanical and thermal behavior of these complex structures depends on both the individual response of the constituent fibers and the density and degree of entanglement of the network.

Physics - Mechanical Engineering - 10.05.2017
Unbreakable quantum entanglement
Unbreakable quantum entanglement
Einstein's "spooky action at a distance" persists even at high accelerations, researchers of the Austrian Academy of Sciences and the University of Vienna were able to show in a new experiment. A source of entangled photon pairs was exposed to massive stress: The photons' entanglement survived the drop in a fall tower as well as 30 times the Earth's gravitational acceleration in a centrifuge.

Mechanical Engineering - Physics - 11.04.2017
Shoe-string theory: Science shows why shoelaces come untied
Shoe-string theory: Science shows why shoelaces come untied
!- Start of DoubleClick Floodlight Tag: Please do not remove Activity name of this tag: UCB001CP Retargeting URL of the webpage where the tag is expected to be placed: http://unknown This tag must be placed between the A new study by mechanical engineers at UC Berkeley finally shows why your shoelaces may keep coming untied.

Life Sciences - Mechanical Engineering - 30.03.2017
Motor Neurons Tell Blood Vessels Where To Go
Motor Neurons Tell Blood Vessels Where To Go
Heidelberg Neuroscientists have identified a critical regulator for blood vessel growth in the developing embryonic spinal cord. The research group under the direction of Dr Carmen Ruiz de Almodóvar of the Heidelberg University Biochemistry Center discovered that special nerve cells known as motor neurons control this process.

Mechanical Engineering - Chemistry - 20.03.2017
Light-controlled gearbox for nanomachines
Light-controlled gearbox for nanomachines
Rewarded with a Nobel Prize in Chemistry in 2016, nanomachines provide mechanical work on the smallest of scales.

Mechanical Engineering - 07.03.2017
How cracks are hot and cool: a burning issue for paper
How cracks are hot and cool: a burning issue for paper
Abstract Material failure is accompanied by important heat exchange, with extremely high temperature - thousands of degrees - reached at crack tips. Such a temperature may subsequently alter the mechanical properties of stressed solids, and finally facilitate their rupture. Thermal runaway weakening processes could indeed explain stick-slip motions and even be responsible for deep earthquakes.

Physics - Mechanical Engineering - 06.02.2017
Stars align in test supporting 'spooky action at a distance'
Stars align in test supporting ‘spooky action at a distance’
Quantum entanglement may appear to be closer to science fiction than anything in our physical reality. But according to the laws of quantum mechanics - a branch of physics that describes the world at the scale of atoms and subatomic particles - quantum entanglement, which Einstein once skeptically viewed as 'spooky action at a distance,' is, in fact, real.

Mechanical Engineering - Physics - 18.01.2017
Nanoparticles improve melting and solidification for manufacturing processes
Adding nanoscale particles of aluminum oxide increases the depth of the melting zone (MZ) in nickel and decreases the size of the heat-affected zone (HAZ). The bottom right image shows how even at higher temperatures the heat affected zone doesn't grow very large. I n an advance that could lead to improved manufacturing, a new study by UCLA researchers shows that adding nanoparticles to metals during the melting process allows for better control during melting.

Physics - Mechanical Engineering - 17.01.2017
Lighting up ultrathin films
Lighting up ultrathin films
Based on a study of the optical properties of novel ultrathin semiconductors, LMU researchers have developed a method for rapid and efficient characterization of these materials. Chemical compounds based on elements that belong to the so-called transition metals can be processed to yield atomically thin two-dimensional crystals consisting of a monolayer of the composite in question.

Mechanical Engineering - Health - 15.09.2016
Touchscreens may improve motor skills in toddlers
A new study by researchers from King's College London and Birkbeck, University of London, has found that toddlers who use touchscreens may show improved fine motor control abilities. The use of touchscreens has increased rapidly in recent years, with statistics showing that in the UK alone, the number of touchscreen devices in the family home has increased from 7 per cent in 2011 to 71 per cent in 2014.

Mechanical Engineering - Electroengineering - 05.08.2016
Shape-changing metamaterial developed using Kirigami technique
Shape-changing metamaterial developed using Kirigami technique
Engineers from the University of Bristol have developed a new shape-changing metamaterial using Kirigami, which is the ancient Japanese art of cutting and folding paper to obtain 3D shapes. Metamaterials are a class of material engineered to produce properties that don't occur naturally. Currently metamaterials are used to make artificial electromagnetic and vibration absorbers and high-performance sensors.

Mechanical Engineering - Chemistry - 01.08.2016
Method opens a window on how stress and strain affect battery performance
CHAMPAIGN, Ill. — Batteries that charge faster and have greater capacity could boost portable electronic devices and electric cars. A new method to simultaneously test stress and strain in battery electrodes gives researchers a window into the mechanical, electrical and chemical forces within lithium-ion batteries.

Law - Mechanical Engineering - 21.07.2016
Leonardo da Vinci’s irrelevant? scribbles mark the spot where he first recorded the laws of friction
A new detailed study of notes and sketches by Leonardo da Vinci has identified a page of scribbles in a tiny notebook as the place where Leonardo first recorded the laws of friction.

Computer Science - Mechanical Engineering - 09.05.2016
Big Thinking in Small Pieces: Computer Guides Humans in Crowdsourced Research
The Knowledge Accelerator, uses a machine-learning program to sort and organize information. Getting a bunch of people to collectively research and write a coherent report without any one person seeing the big picture may seem akin to a group of toddlers producing Hamlet by randomly pecking at typewriters.

Life Sciences - Mechanical Engineering - 02.05.2016
Researchers improve understanding of ’Silly Putty’ protein that could improve bioengineered tissues
New insights into the characteristics of collagen, the protein that provides structure and stability for cells but which also stretches like Silly Putty, could help scientists design techniques for regenerating tissues. Collagen is an essential protein for living tissue. It forms the stiff scaffolding that provides structure and stability for tissues and the cells within them.