Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



TECH SPACE
On-the-go ultrahigh vacuum storage systems
by Staff Writers
Washington DC (SPX) Dec 11, 2015


A group of researchers developed a new portable UHV sample storage system to securely transport samples between light source facilities via high-speed train in Japan. Image courtesy of Fuji city. For a larger version of this image please go here.

The train to Tsukuba, Japan often carries workers with briefcases and travelers with overnight bags, but recently a group of scientists took an unusual bit of luggage on board: a suitcase with an ultrahigh vacuum chamber to store air-sensitive clusters of platinum metal. The clusters are of special interest because they're expected to improve catalytic activities such as automotive exhaust reactions and electrochemical reactions.

The researchers wanted to study how the clusters interact with the surface of different materials and how their sizes affect the behavior - both effects which can be observed using a technique called polarization-dependent total reflection fluorescence (PRTF) X-ray absorption fine-structure spectroscopy (XAFS). The technique requires powerful X-rays which can only be produced in a select few light source facilities.

The problem for the research team was that labs capable of XAFS measurements are far from the labs with the atomically precise cluster deposition system needed to make the clusters. The platinum clusters are also extremely air-sensitive, and are harmed by exposure to the atmosphere.

To outmaneuver these challenges, researchers from Toyota Central R and D Labs, Hokkaido University, and AVC Co. collaborated to develop an ultrahigh vacuum (UHV) storage system. As they report in AVS' Journal of Vacuum Science and Technology A, their "suitcase under UHV conditions" makes it much easier to carry and transport samples from one scientific facility to another via public transportation.

Among its key features, the system is designed to be accessible by two different sample manipulation systems. "The sample can receive a flag-style sample plate via a pincer-grip type of wobble stick and a 'key' type of tip-transfer rod," explained Yoshihide Watanabe, the paper's lead author and program manager of the Quantum Controlled Catalysis Program at the Frontier Research Center, part of Toyota Central R and D Labs in Aichi, Japan.

Samples are protected from vibration during transport inside the "special travel suitcase" and outfitted with vacuum conditions within the sample chamber guaranteed to last at least 72 hours, during which time an ion pump is powered by battery.

As many as three samples can be stored and transported at the same time. "Our vertically arrayed design minimizes the required diameter," said Watanabe. "And our compact sample holder 'stacker' enables a reduction in the size of the portable UHV sample storage system for public transportation."

The significance of the group's work is that their portable UHV sample storage system now makes it possible to easily transfer samples between the cluster deposition chamber and PTRF-XAFS measurement chamber under UHV conditions.

Samples for this work were prepared at Toyota Central R and D Labs in Nagakute, Japan, while the PRRF-XAFS measurements were performed at the Photon Factory at the Institute of Materials Structure Science in Tsukuba, Japan.

The distance between these facilities is roughly 400 kilometers (248.5 miles), so the group put their system to the test via high-speed train. "It's possible to travel with the system by high-speed train, bus, and taxi, but it would probably be difficult to travel with it via airplane because of the high level of security checks before boarding," Watanabe noted. "But it's a great advantage to be able to carry three samples at once via high-speed train to reduce the travel time involved."

The group's system will be useful for materials analysis using synchrotron X-ray or particle beams for other air-sensitive materials after minor remodeling. The "key and keyhole" sample manipulating system, which is equipped with a 90-degree rotation lock supported by a coiled spring, enables flexible manipulation and then quick, easy release of the sample holder.

"We anticipate that our portable UHV sample storage system with a key and keyhole sample manipulating system will find widespread use as a standard system for UHV XAFS measurements - enabling experiments at any light source in the world," said Watanabe.

The article "Portable ultrahigh-vacuum sample storage system for polarization-dependent total-reflection fluorescence x-ray absorption fine structure spectroscopy," is authored by Yoshihide Watanabe, Yusaku F. Nishimura, Ryo Suzuki, Hiromitsu Uehara, Tomoyuki Nimura, Atshushi Beniya, Noritake Isomura, Kiyotaka Asakura and Satoru Takakusagi. It will be published in the Journal of Vacuum Science and Technology A on Dec. 8, 2015 (DOI: 10.1116/1.4936344).


Thanks for being here;
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 Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

.


Related Links
American Institute of Physics
Space Technology News - Applications and Research






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

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

Previous Report
TECH SPACE
Penn researchers make thinnest plates that can be picked up by hand
Philadelphia, PA (SPX) Dec 09, 2015
Scientists and engineers are engaged in a global race to make new materials that are as thin, light and strong as possible. These properties can be achieved by designing materials at the atomic level, but they are only useful if they can leave the carefully controlled conditions of a lab. Researchers at the University of Pennsylvania have now created the thinnest plates that can be picked up and ... read more


TECH SPACE
Gaia's sensors scan a lunar transit

SwRI scientists explain why moon rocks contain fewer volatiles than Earth's

All-female Russian crew starts Moon mission test

Russian moon mission would need 4 Angara-A5V launches

TECH SPACE
Mars Mission Team Addressing Vacuum Leak on Key Science Instrument

Letter to Mars? Royal Mail works it out for British boy, 5

European payload selected for ExoMars 2018 surface platform

ExoMars has historical, practical significance for Russia, Europe

TECH SPACE
Australia seeks 'ideas boom' with tax breaks, visa boosts

Orion's power system to be put to the test

The Ins and Outs of NASA's First Launch of SLS and Orion

Aerojet Rocketdyne tapped for spacecraft's crew module propulsion

TECH SPACE
China's indigenous SatNav performing well after tests

China launches Yaogan-29 remote sensing satellite

China's scientific satellites to enter uncharted territory

China to launch Dark Matter Satellite in mid-December

TECH SPACE
Getting Into the Flow on the ISS

Orbital to fly first space cargo mission since 2014 explosion

Russian-US Space Collaboration Intact Despite Chill in Bilateral Ties

ISS EarthKAM ready for student imaging request

TECH SPACE
Orbital cargo ship blasts off toward space station

Virgin Galactic Welcomes 'Cosmic Girl' To Fleet Of Space Access Vehicles

DXL-2: Studying X-ray emissions in space

Arianespace selected to launch Azerspace-2/Intelsat 38 satellites

TECH SPACE
What kinds of stars form rocky planets

Half of Kepler's giant exoplanet candidates are false positives

Exiled exoplanet likely kicked out of star's neighborhood

Neptune-size exoplanet around a red dwarf star

TECH SPACE
Penn researchers make thinnest plates that can be picked up by hand

World's tiniest temperature sensor can track movement from inside cement

Researchers discover mother of pearl production process

In-Space Manufacturing Prototype




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - 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. Privacy Statement