NIST microfluidic device for synthesizing and analyzing polymers and other complex liquids.
A new type of microfluidic device that can help industry to optimize paints, coatings for microelectronics and specialty polymers has been developed by National Institute of Standards and Technology (NIST) researchers. The device is made of a chemically durable plastic that is resistant to many common organic solvents. It was fabricated with a rapid prototyping method also developed at the agency.
Described in the Aug. 18 issue of the Journal of the American Chemical Society,* such devices can be used to make specialty polymers in small amounts, or to rapidly change polymer ingredients so that the impact of expensive additives on material behavior can be systematically analyzed. This is becoming important as more specialty polymers use designer elements for applications in nanotechnology and biotechnology.
Devices typically measure about half the size of a credit card and are made with a technique called "frontal photopolymerization." The NIST researchers adapted the technique to fabricating microfluidic devices. Ultraviolet light was shined through patterned "stencils" into a liquid layer of a chemical called thiolene. Areas exposed to the light harden into a solid polymer while unexposed areas remain liquid and can be flushed away, leaving relatively deep channels capable of handling thicker fluids than current lab-on-a-chip devices.
Jelly with memory – predicting the leveling of com-mercial paints
15.12.2017 | Fraunhofer-Institut für Produktionstechnik und Automatisierung IPA
Fraunhofer researchers develop measuring system for ZF factory in Saarbrücken
21.11.2017 | Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences