Featured Research

from universities, journals, and other organizations

Superconductivity Is Key To Conserving Energy, Says Researcher

Date:
September 4, 2006
Source:
University Of Missouri-Rolla
Summary:
Dr. Fatih Dogan, a professor of materials science and engineering at the University of Missouri-Rolla, is working with superconducting materials that might eventually revolutionize the way energy is conserved. Dogan is an author of a new article about the possible mechanisms of superconductivity at high temperatures.

Dr. Fatih Dogan, a professor of materials science and engineering at the University of Missouri-Rolla, is working with superconducting materials that might eventually revolutionize the way energy is conserved.

Dogan is an author of a new article about the possible mechanisms of superconductivity at high temperatures. The paper was published this week by Nature Physics, an academic journal.

Superconductivity is a phenomenon that occurs in some materials at temperatures hundreds of degrees below zero. The phenomenon is characterized by exactly zero electrical resistance. In ordinary conductors the amount of resistance never reaches zero.

Normal conductors like copper generate heat, causing a certain amount of the energy transported through copper wires to be lost. For the same reason, a lot of energy is wasted in the processes of burning coal and oil. Superconducting materials don€™t produce heat and are therefore much more energy efficient.

Fifty years ago, Nobel Prize-winning scientists explained the superconductivity of materials at low temperatures. But for the materials to be useful in the transportation of electricity, for example, they would have to be superconductive at much higher temperatures.

€œIdeally, we€™re talking room temperatures or higher,€ Dogan says. €œIf we understand the mechanisms of high-temperature superconductivity, we could discover new materials that could be superconducting. Computers would work extremely fast without heating up and power lines could transport electricity on thin lines without losing energy.€

Dogan is working with a mixture containing versions of four elements: yttrium, barium, copper and oxygen. In a UMR lab, high-quality crystals of the mixture are grown. The crystals are used by physicists around the world for neutron scattering measurements.

€œThe periodic table has billions of possibilities,€ Dogan says. €œYou have to have a good idea about what might work before you start.€

Dogan says physicists and other scientists around the world have been working on the superconductivity problem for a long time. Some of them have turned to Dogan, because he has developed a reputation for being able to grow large crystals of the complex elemental mixture that is believed to have unique qualities conducive to superconductivity at high temperatures.

Powder from the four elements is heated, melted, and then allowed to cool in a disc shape about the size of a silver dollar. The trick to getting the material in the disc to form as a single high-quality crystal, according to Dogan, is to place a seed crystal that melts at higher temperatures in the center of the mixture. Under precisely controlled conditions during the cooling process, the seed crystal colonizes the surrounding material.

Dogan€™s crystals help physicists understand the mechanisms of high-temperature superconductivity. If more can be learned, new materials might one day be engineered to solve a lot of the world€™s energy problems.

The latest Nature Physics paper is the sixth Nature publication on superconductivity materials that Dogan has co-authored.


Story Source:

The above story is based on materials provided by University Of Missouri-Rolla. Note: Materials may be edited for content and length.


Cite This Page:

University Of Missouri-Rolla. "Superconductivity Is Key To Conserving Energy, Says Researcher." ScienceDaily. ScienceDaily, 4 September 2006. <www.sciencedaily.com/releases/2006/09/060901184325.htm>.
University Of Missouri-Rolla. (2006, September 4). Superconductivity Is Key To Conserving Energy, Says Researcher. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2006/09/060901184325.htm
University Of Missouri-Rolla. "Superconductivity Is Key To Conserving Energy, Says Researcher." ScienceDaily. www.sciencedaily.com/releases/2006/09/060901184325.htm (accessed July 25, 2014).

Share This




More Matter & Energy News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins