Popular Science articles about Physics & Chemistry

A Fermilab scientist works on the laser beams at the heart of the Holometer experiment. The Holometer will use twin laser interferometers to test whether the universe is a 2-D hologram.

Key to speed? Elite sprinters are unlike other athletes -- deliver forceful punch to ground

Ken Clark, researcher in the SMU Locomotor Performance Laboratory, observes a world-class sprinter as she runs at top speed on the lab's custom high-speed force treadmill that allows the lab's researchers to capture and analyze hundreds of footfalls at precisely controlled speeds.The world's fastest sprinters have unique gait features that account for their ability to achieve fast speeds, according to two new studies from Southern Methodist University, Dallas.

Introducing the multi-tasking nanoparticle

Kit Lam and colleagues from UC Davis and other institutions have created dynamic nanoparticles (NPs) that could provide an arsenal of applications to diagnose and treat cancer. Built on an...

Symphony of nanoplasmonic and optical resonators produces laser-like light emission

This is the hybrid optoplasmonic system showing the operation of amplification.By combining plasmonics and optical microresonators, researchers at the University of Illinois at Urbana-Champaign have created a new optical amplifier (or laser) design, paving the way for power-on-a-chip applications.

Tilted acoustic tweezers separate cells gently

This is a schematic illustration of working principle and device structure for a tilted-angle standing surface acoustic wave-based cell-separation device.Precise, gentle and efficient cell separation from a device the size of a cell phone may be possible thanks to tilt-angle standing surface acoustic waves, according to a team of...

Singaporean university launches world's 1st ZigBee-based inter-satellite comms system

This image depicts VELOX-I before and after deployment and a picosatellite.Engineers at the Nanyang Technological University in Singapore have successfully piloted the world's first ZigBee-based inter-satellite communication system.

Water window imaging opportunity

Ever heard of the water window? It consists of radiations in the 3.3 to 4.4 nanometre range, which are not absorbed by the water in biological tissues. New theoretical findings...

A breakthrough in imaging gold nanoparticles to atomic resolution by electron microscopy

This is a visualization of the atomic structure of the Au68 gold nanoparticle determined by electron microscopy. The colored spheres denote gold atoms in different crystal shells around the central axis (red). The background shows a collection of real-life electron microscopy data from which the single structure shown was reconstructed.Nanometre-scale gold particles are intensively investigated for application as catalysts, sensors, drug delivery devices, biological contrast agents and components in photonics and molecular electronics. Gaining knowledge of their atomic-scale structures,...

Seeing a molecule breathe

For the first time, chemists have succeeded in measuring vibrational motion of a single molecule with a femtosecond time resolution. The study reveals how vibration of a single molecule differs...

Bubbling down: Discovery suggests surprising uses for common bubbles

Princeton researchers have discovered that bursting bubbles can push tiny droplets of a surface material down into a base liquid as well as sending them into the air above. The finding has important implications for science and industries that are concerned with mixing liquid solutions. From right, Howard Stone, the Donald R. Dixon '69 and Elizabeth W. Dixon Professor of Mechanical and Aerospace Engineering, and graduate student Jie Feng observe bubbles in a tank.Anyone who has ever had a glass of fizzy soda knows that bubbles can throw tiny particles into the air. But in a finding with wide industrial applications, Princeton researchers...

Organic photovoltaic cells of the future

Researchers develop method to screen organic materials for organic photovoltaic cells by charge formation efficiency.Organic photovoltaic cells -- a type of solar cell that uses polymeric materials to capture sunlight -- show tremendous promise as energy conversion devices, thanks to key attributes such as...

Sorting cells with sound waves

Researchers from MIT, Pennsylvania State University, and Carnegie Mellon University have devised a new way to separate cells by exposing them to sound waves as they flow through a tiny channel. Their device, about the size of a dime, could...

Duality principle is 'safe and sound'

Decades of experiments have verified the quirky laws of quantum theory again and again. So when scientists in Germany announced in 2012 an apparent violation of a fundamental law of...

Competition for graphene

This is an illustration of a MoS2/WS2 heterostructure with a MoS2 monolayer lying on top of a WS2 monolayer. Electrons and holes created by light are shown to separate into different layers.A new argument has just been added to the growing case for graphene being bumped off its pedestal as the next big thing in the high-tech world by the two-dimensional...

A glucose meter of a different color provides continuous monitoring

Professor Paul Braun and graduate student Chunjie Zhang developed a continuous glucose-monitoring system that changes color when glucose levels rise.University of Illinois engineers are bringing a touch of color to glucose monitoring.

Physics research removes outcome unpredictability of ultracold atomic reactions

Probability density -- given by the radius of the surface points to the origin -- of an Efimov trimer state at different three-body geometries that are characterized by the polar angle -- indicated by the trimer legends. The azimuthal angle characterizes the permutation of three atoms. The key feature in the probability density is that unlike ordinary molecular binding that mostly has a single geometry, the Efimov trimer covers have a broad range of geometries. The atoms in such states behave more like in a fluid drop.Findings from a physics study by a Kansas State University researcher are helping scientists accurately predict the once unpredictable.

Biomimetic photodetector 'sees' in color

This image depicts Naomi Halas.Rice University researchers have created a CMOS-compatible, biomimetic color photodetector that directly responds to red, green and blue light in much the same way the human eye does.

Researchers develop models to study polyelectrolytes, including DNA and RNA

Researchers from North Carolina State University have developed a novel and versatile modeling strategy to simulate polyelectrolyte systems. The model has applications for creating new materials as well as for studying polyelectrolytes, including DNA and RNA.Researchers from North Carolina State University have developed a novel and versatile modeling strategy to simulate polyelectrolyte systems. The model has applications for creating new materials as well as for...

Turning waste from rice, parsley and other foods into biodegradable plastic

Your chairs, synthetic rugs and plastic bags could one day be made out of cocoa, rice and vegetable waste rather than petroleum, scientists are now reporting. The novel process they...

The power of salt

Where the river meets the sea, there is the potential to harness a significant amount of renewable energy, according to a team of mechanical engineers at MIT.

MIPT and RAS scientists made an important step towards creating medical nanorobots

This illustration shows nanoparcticles producing logical calculations.Researchers from the Institute of General Physics of the Russian Academy of Sciences, the Institute of Bioorganic Chemistry of the Russian Academy of Sciences and MIPT have made an important...

Laser makes microscopes way cooler

Ph.D. students Giovanni Guccione (left) and Harry Slatyer examine their gold coated nanowire probe in the Quantum Optics Laboratory at the Australian National University.Laser physicists have found a way to make atomic-force microscope probes 20 times more sensitive and capable of detecting forces as small as the weight of an individual virus.

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