Navigation Links
Nano-oils keep their cool
Date:2/1/2012

Rice University scientists have created a nano-infused oil that could greatly enhance the ability of devices as large as electrical transformers and as small as microelectronic components to shed excess heat.

Research in the lab of Rice materials scientist Pulickel Ajayan, which appears in the American Chemical Society journal ACS Nano, could raise the efficiency of such transformer oils by as much as 80 percent in a way that is both cost-effective and environmentally friendly.

The Rice team headed by lead authors Jaime Taha-Tijerina, a graduate student, and postdoctoral researcher Tharangattu Narayanan focused their efforts on transformers for energy systems. Transformers are filled with mineral oils that cool and insulate the windings inside, which must remain separated from each other to keep voltage from leaking or shorting.

The researchers discovered that a very tiny amount of hexagonal boron nitride (h-BN) particles, two-dimensional cousins to carbon-based graphene, suspended in standard transformer oils are highly efficient at removing heat from a system.

"We don't need a large amount of h-BN," Narayanan said. "We found that 0.1 weight percentage of h-BN in transformer oil enhances it by nearly 80 percent."

"And at 0.01 weight percentage, the enhancement was around 9 percent," Taha-Tijerina said. "Even with a very low amount of material, we can enhance the fluids without compromising the electrically insulating properties."

Taha-Tijerina, who was employed by a transformer manufacturer in Mexico before coming to Rice, said others working on similar compounds are experimenting with particles of alumina, copper oxide and titanium oxide, but none of the compounds has the combination of qualities exhibited by h-BN.

Narayanan said the h-BN particles, about 600 nanometers wide and up to five atomic layers thick, disperse well in oil and, unlike highly conductive graphene, are highly resistant to electricity. With help from co-author Matteo Pasquali, a Rice professor of chemical and biomolecular engineering and of chemistry, the team determined that the oil's viscosity another important quality is minimally affected by the presence of the nanoparticle fillers.

"Our research shows that with new materials and innovative approaches, we can add enormous value to applications that exist today in industry," said Ajayan, Rice's Benjamin M. and Mary Greenwood Anderson Professor in Mechanical Engineering and Materials Science and of chemistry. "Thermal management is a big issue in industry, but the right choice of materials is important; for transformer cooling, one needs dispersants in oils that take heat away, yet remain electrically insulating. Moreover, the two-dimensional nature of the fillers keeps them stable in oils without settling down for long periods of time."


'/>"/>
Contact: David Ruth
david@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Related biology technology :

1. Clionsky Neuro Systems (CNS-Neuro) Announces Publication of Study Finding Elderly Patients Unable to Recognize Their Memory Loss
2. In new quantum-dot LED design, researchers turn troublesome molecules to their advantage
3. The Japanese Cancer Association and Debiopharm Group™ Present Doctors Arakawa and Kurokawa With the 2011 JCA-Mauvernay Award for Their Innovative and Outstanding Research in the Field of Cancer
4. Some Patients Paying for Their Prostate Cancer Surgery for the Rest of Their Lives
5. Amgen Staff Volunteer Efforts Result in $5,000 For Each of Their Favorite Nonprofits
6. Tumor Marker Diagnostic Technologies: Assessment of Current and Emerging Technologies, And Their Potential Market Applications
7. Cadmium selenide quantum dots degrade in soil, releasing their toxic guts, study finds
8. The Pontifical Council for Culture and NeoStem Announce Steps Forward in their Partnership to Advance Adult Stem Cell Research
9. Life Technologies Employees Give Back to Their Communities During Eighth Annual Global Volunteer Day
10. Biological molecules select their spin
11. Grifols and Talecris Announce the Outside Date of Their Merger Agreement has been Extended to June 30, 2011
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2016)... ... , ... Supplyframe, the Industry Network for electronics hardware design ... Located in Pasadena, Calif., the Design Lab’s mission is to bring together inventors ... and brought to market. , The Design Lab is Supplyframe’s physical representation of ...
(Date:6/23/2016)... 2016  Blueprint Bio, a company dedicated to identifying, ... community, has closed its Series A funding round, according ... "We have received a commitment from Forentis Fund ... to meet our current goals," stated Matthew Nunez ... to complete validation on the current projects in our ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... regulatory and technical consulting, provides a free webinar on Performing Quality ... 13, 2016 at 12pm CT at no charge. , Incomplete investigations are still ...
(Date:6/22/2016)... , June 22, 2016 Cell Applications, ... allow them to produce up to one billion ... lot within one week. These high-quality, consistent stem ... preparing cells and spend more time doing meaningful, ... a proprietary, high-volume manufacturing process that produces affordable, ...
Breaking Biology Technology:
(Date:4/15/2016)... , April 15, 2016 ... "Global Gait Biometrics Market 2016-2020,"  report to their ... ) , ,The global gait biometrics market ... 13.98% during the period 2016-2020. Gait ... which can be used to compute factors that ...
(Date:3/31/2016)... -- Genomics firm Nabsys has completed a financial  restructuring under ... M.D., who returned to the company in October 2015. ... including Chief Technology Officer, John Oliver , Ph.D., ... Vice President of Software and Informatics, Michael Kaiser ... Bready served as CEO of Nabsys from 2005-2014 and ...
(Date:3/22/2016)... Ontario , PROVO and ... Newborn Screening Ontario (NSO), which operates the ... for molecular testing, and Tute Genomics and UNIConnect, ... management technology respectively, today announced the launch of a ... next-generation sequencing (NGS) testing panel. NSO ...
Breaking Biology News(10 mins):