Sentences with word «micromotors»

As part of the same manufacturing process, these roll - up micromotors can be lined with platinum.

Nanoengineers at the University of California, San Diego have designed enzyme - functionalized micromotors that rapidly zoom around in water, remove carbon dioxide and convert it into a usable solid form.

As a next step, researchers are planning to make carbon - capturing micromotors that can be propelled by water.

Image: Joana Vasconcelos Garden of Eden 2008 Plastic flowers, synchronous micromotors, compact fluorescent lamps, discs in transparent polychrome acrylic, electrical system, Lycra, PVC, MDF variable dimensions, module 40 cm heightHV33473 © Joana Vasconcelos 2010 The pre-eminent Portuguese artist of her generation Vasconcelos came to public attention for her display at the Venice Biennale in 2005.

The micromotors aren't ready for use in humans yet — obvious problems include avoiding unintended pregnancies — but the researchers hope to move the system into clinical use in the «near future.»

Next, using magnets, they guide the sperm «micromotors» into tumor cell spheroids growing in a dish, they report on the preprint server arXiv.

A micromotor covered with the enzyme carbonic anhydrase zips through water rapidly converting dissolved carbon dioxide to the bicarbonate ion, which can then be precipitated as calcium carbonate.

This membrane acts as a kind of mould which, when wetted briefly in water and then hand - shaken (yes, hand - shaken) from side to side in ethanol, sets and releases multiple self - rolled graphene oxide tubes — the basic building block of our micromotors.

But the real breakthrough, and the focus of the paper published in Small with lead author Luis Baptista - Pires, is the innovative, almost playfully simple production method used to build these micromotors.

«We're excited about the possibility of using these micromotors to combat ocean acidification and global warming,» said Virendra V. Singh, a postdoctoral scientist in Wang's research group and a co-first author of this study.

The team explained that the micromotors» autonomous movement induces efficient solution mixing, leading to faster carbon dioxide conversion.

The fast and continuous motion of the micromotors in solution makes the micromotors extremely efficient at removing carbon dioxide from water, said researchers.

The micromotors have an outer polymer surface that holds the enzyme carbonic anhydrase, which speeds up the reaction between carbon dioxide and water to form bicarbonate.

The micromotors are essentially six - micrometer - long tubes that help rapidly convert carbon dioxide into calcium carbonate, a solid mineral found in eggshells, the shells of various marine organisms, calcium supplements and cement.

However, the use of hydrogen peroxide as the micromotor fuel is a drawback because it is an extra additive and requires the use of expensive platinum materials to build the micromotors.

In their experiments, nanoengineers demonstrated that the micromotors rapidly decarbonated water solutions that were saturated with carbon dioxide.

When released in water solutions containing as little as two to four percent hydrogen peroxide, the micromotors reached speeds of more than 100 micrometers per second.

The micromotors were just as effective in a sea water solution and removed 88 percent of the carbon dioxide in the same timeframe.

Within five minutes, the micromotors removed 90 percent of the carbon dioxide from a solution of deionized water.

«In the future, we could potentially use these micromotors as part of a water treatment system, like a water decarbonation plant,» said Kevin Kaufmann, an undergraduate researcher in Wang's lab and a co-author of the study.

To fuel the micromotors in water, researchers added hydrogen peroxide, which reacts with the inner platinum surface of the micromotors to generate a stream of oxygen gas bubbles that propel the micromotors around.