. 24/7 Space News .
NANO TECH
New technique produces tunable, nanoporous materials
by Staff Writers
Chicago IL (SPX) Oct 30, 2017


Left and center: Magnetite- and gold-based nanoparticles self-assemble into lattice-like structures. Right: Individual gold and magnetite based nanoparticles.

A collaborative group of researchers including Petr Kral, professor of chemistry at the University of Illinois at Chicago, describe a new technique for creating novel nanoporous materials with unique properties that can be used to filter molecules or light. They describe their research in the journal Science.

Nanoparticles are tiny particles made up of a central solid core to which molecules called ligands are often attached. Nanoparticles can self-assemble into lattice-like formations that have unique optical, magnetic, electronic and catalytic properties.

Experimentalists led by Rafal Klajn, professor of chemistry at the Weizmann Institute of Science in Israel and corresponding author on the paper, produced thin lattice structures made up of two kinds of nanoparticles: one with a magnetite core and another with a gold core.

In order to form these thin, lattice-like structures, nanoparticles self-assembled within a layer of drying solvent floating on another liquid in which the particles are insoluble.

"The self-assembly mechanisms in the thin solvent layer differ from those at work when nanoparticles are allowed to self-assemble in bulk solvents," Kral explained.

The experimentalists also developed a technique for chemically etching out one of the two types of nanoparticles from the self-assembled lattice-like structures. The resulting material had tiny, regularly spaced holes.

The experimentalists then turned to Kral's theoretical chemistry group, which included Lela Vukovic, assistant professor of chemistry at the University of Texas at El Paso, to help them understand how these lattices formed.

Kral and Vukovic used atomistic molecular dynamics simulations to model exactly how the two different nanoparticles self-assembled into the thin, lattice-like structures. They found that depending on the type of liquids used in this process, nanoparticles self-assemble into different structures.

"Based on the known properties of the nanoparticles and the different liquid surfaces they were placed onto, we were able to predict how and why different lattices formed," said Kral, whose group has extensively studied how nanoparticles interact to form complex superstructures.

Research paper

NANO TECH
Jumping nanoparticles
Vienna, Austria (SPX) Oct 26, 2017
In 1827, the English botanist Robert Brown made an observation of seemingly little importance that would turn out to play a central role in the development of the atomic theory of matter. Looking through the objective of a microscope, he noticed that pollen grains floating in water were constantly jiggling around as if driven by an invisible force, a phenomenon now known as Brownian motion ... read more

Related Links
University of Illinois at Chicago
Nano Technology News From SpaceMart.com
Computer Chip Architecture, Technology and Manufacture


Thanks for being there;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Monthly Supporter
$5+ Billed Monthly


paypal only
SpaceDaily Contributor
$5 Billed Once


credit card or paypal


Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

NANO TECH
Plants and psychological well-being in space

Spacewalkers fix robotic arm in time to grab next cargo ship

NASA develops and tests new housing for in-orbit science payloads

Russia's space agency says glitch in manned Soyuz landing

NANO TECH
NASA awards launch contracts for Landsat 9 and Sentinel-6A

It's a success! Blue Origin conducts first hot-fire test of BE-4 engine

ESA role in Europe's first all-electric telecom satellite

Lockheed Martin Launches Second Cycle of 'Girls' Rocketry Challenge' in Japan

NANO TECH
Solar eruptions could electrify Martian moons

MAVEN finds Mars has a twisted tail

Mine craft for Mars

Opportunity spends the week imaging Perseverance Valley

NANO TECH
Space will see Communist loyalty: Chinese astronaut

China launches three satellites

Mars probe to carry 13 types of payload on 2020 mission

UN official commends China's role in space cooperation

NANO TECH
Myanmar to launch own satellite system-2 in 2019: vice president

Eutelsat's Airbus-built full electric EUTELSAT 172B satellite reaches geostationary orbit

Turkey, Russia to Enhance Cooperation in the Field of Space Technologies

SpaceX launches 10 satellites for Iridium mobile network

NANO TECH
Turning a material upside down can sometimes make it softer

Selective memory makes data caches 50 percent more efficient

Laser beams for superconductivity

Electrode materials from the microwave oven

NANO TECH
New NASA study improves search for habitable worlds

From Comets Come Planets

A star that devoured its own planets

Astronomers find potential solution into how planets form

NANO TECH
Haumea, the most peculiar of Pluto companions, has a ring around it

Ring around a dwarf planet detected

Helicopter test for Jupiter icy moons radar

Solving the Mystery of Pluto's Giant Blades of Ice









The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.