Drizzling honey on toast can produce mesmerizing, meandering patterns, as the syrupy fluid ripples and coils in a sticky, golden thread. Dribbling paint on canvas can produce similarly serpentine loops and waves. The patterns created by such viscous fluids can be reproduced experimentally in a setup known as a “fluid mechanical sewing machine,” in which an overhead nozzle deposits a thick fluid onto a moving conveyor belt.
Google is trying to shake up the wireless phone industry with a low-priced service designed to pressure major carriers into making it more affordable for people to get online and use Google's services. The service, called "Project Fi," debuted Wednesday, about two months after Google revealed its plans to expand its ever-growing empire into providing wireless connections for smartphones.
JM Science offers a variety of light source lamps for a wide range of instruments. The atomic absorption lamps (AA Lamps) for spectroscopy instrumentation are priced for budget-conscience laboratories where AA spectroscopy instrumentation is used. The AA Lamps provide stable light output over the entire lamp life.
Imagine shrinking tubes and beakers down to the size of a credit card. When engineers figured out how to do that two decades ago, they enabled complex tests to be performed with tiny "lab on a chip" technology. But until now, there has been no way to accurately measure the size of the tiny vessels they created. Now, scientists at NIST have found a potential solution to this longstanding manufacturing issue.
As baby boomers age, the number of people diagnosed with Parkinson's disease is expected to increase. Patients who develop this disease usually start experiencing symptoms around age 60 or older. Currently, there's no cure, but scientists are reporting a novel approach that reversed Parkinson's-like symptoms in rats. Their results, published in ACS Nano, could one day lead to a new therapy for human patients.
Ever since computers have been small enough to be fixtures on desks and laps, their central processing has functioned something like an atomic Etch A Sketch, with electromagnetic fields pushing data bits into place to encode data. Unfortunately, the same drawbacks and perils of the mechanical sketch board have been just as pervasive in computing.
A fully extended strand of human DNA measures about five feet in length. Yet it occupies a space just one-tenth of a cell by wrapping itself around histones to form a dense hub of information called chromatin. Access to these meticulously packed genes is regulated by post-translational modifications, chemical changes to the structure of histones that act as on-off signals for gene transcription.
The old adage that a chain is only as strong as its weakest link certainly applies to the risk organizations face in defending against cybersecurity threats. Employees pose a danger that can be just as damaging as a hacker. Iowa State Univ. researchers are working to better understand these internal threats by getting inside the minds of employees who put their company at risk.
Scientists have, for the first time, captured live images of the process of taste sensation on the tongue. The international team imaged single cells on the tongue of a mouse with a specially designed microscope system.
Researchers from North Carolina State Univ. have discovered that electron spin brings a previously unknown degree of order to the high entropy alloy nickel iron chromium cobalt (NiFeCrCo), and may play a role in giving the alloy its desirable properties.
Metallic glass, a class of materials that offers both pliability and strength, is poised for a friendly takeover of the chemical landscape. Yale Univ. engineers have found a unique method for designing metallic glass nanostructures across a wide range of chemicals. The process will enable the fabrication of an array of new materials, with applications for everything from fuel cells to biological implants.
Engineers at the Univ. of California, San Diego have discovered a method to increase the amount of electric charge that can be stored in graphene. The research may provide a better understanding of how to improve the energy storage ability of capacitors for potential applications in cars, wind turbines and solar power.
Enzymes, the micro machines in our cells, can evolve to perform new tasks when confronted with novel situations. But what if you want an enzyme to do an entirely different job—one that it would never have to do in a cell? In a recent report published in ACS Central Science, researchers show that they can mimic nature and perform evolution in a test tube, developing enzymes that can perform brand-new chemical reactions.
Modern research has found no simple, inexpensive way to alter a material’s thermal conductivity at room temperature. That lack of control has made it hard to create new classes of devices that use phonons, rather than electrons or photons, to harvest energy or transmit information. Phonons have proved hard to harness.
Light can come in many frequencies, only a small fraction of which can be seen by humans. Between the invisible low-frequency radio waves used by cell phones and the high frequencies associated with infrared light lies a fairly wide swath of the electromagnetic spectrum occupied by what are called terahertz, or sometimes submillimeter, waves.