Featured Research

from universities, journals, and other organizations

'Tunable Diode' A New Tool For Engineers

Date:
February 17, 1998
Source:
University Of Oregon
Summary:
Electrical engineers soon will have a new tool for use in designing electronic circuitry, including microelectronic devices such as computer chips, thanks to pioneering research by a University of Oregon chemist.

EUGENE, Ore.--Electrical engineers soon will have a new tool for use in designing electronic circuitry, including microelectronic devices such as computer chips, thanks to pioneering research by a University of Oregon chemist.

Related Articles


As reported in the Dec. 19 issue of Science magazine, Mark Lonergan has demonstrated the concept of a “tunable diode,” a new type of electronic device for controlling electricity.

The appearance of the article in this prestigious publication comes almost exactly 50 years after the discovery of the transistor by three researchers, one of whom, the late Walter Brattain, earned a master’s degree from the University of Oregon in 1926. Brattain and his collaborators, John Bardeen and William Shockley, jointly received the 1956 Nobel Prize in physics.

Lonergan’s realization of the tunable diode relies on the special properties of a relatively new class of materials known as conducting polymers. Presently, there is no direct analog to the tunable diode based on more conventional materials.

“The unique properties of this device hopefully will open new avenues for electrical engineers in the design of circuitry for the useful control and manipulation of electrical energy,” Lonergan says.

The manipulation of energy in electrical circuits can be likened to the control of traffic on a highway system. In each case, specialized structures exert control over the system’s traffic. Conventional diodes can be viewed as one kind of traffic control device--essentially a one-way street for electricity. The tunable diode remains a one-way street, but it offers the added flexibility of a variable number of lanes.

Specific applications of the tunable diode and its unique characteristics have yet to be devised. Lonergan notes, however, that “if the concept of the tunable diode can be successfully transferred into a practical device, it may one day join the transistor, resistor and capacitor as a common component found in a myriad of new electronic devices. It is a new tool, and the advent of any new tool opens new possibilities.”

Lonergan joined the UO chemistry faculty in 1996 as an assistant professor. Originally from Hillsboro, Ore., he attended the University of Oregon as an undergraduate, earning degrees in mathematics and chemistry with summa cum laude honors in 1990.


Story Source:

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


Cite This Page:

University Of Oregon. "'Tunable Diode' A New Tool For Engineers." ScienceDaily. ScienceDaily, 17 February 1998. <www.sciencedaily.com/releases/1998/02/980217122429.htm>.
University Of Oregon. (1998, February 17). 'Tunable Diode' A New Tool For Engineers. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/1998/02/980217122429.htm
University Of Oregon. "'Tunable Diode' A New Tool For Engineers." ScienceDaily. www.sciencedaily.com/releases/1998/02/980217122429.htm (accessed October 31, 2014).

Share This



More Matter & Energy News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Jaguar Land Rover Opens $800 Million Factory in Britain

Jaguar Land Rover Opens $800 Million Factory in Britain

AFP (Oct. 30, 2014) British luxury car manufacturer Jaguar Land Rover opened a $800 million engine manufacturing centre in western England, creating 1,400 jobs. Duration: 00:45 Video provided by AFP
Powered by NewsLook.com
SkyCruiser Concept Claims to Solve Problem With Flying Cars

SkyCruiser Concept Claims to Solve Problem With Flying Cars

Buzz60 (Oct. 30, 2014) A start-up company called Krossblade says its SkyCruiser concept flying car solves the problem with most flying car concepts. Mara Montalbano (@maramontalbano) explains. Video provided by Buzz60
Powered by NewsLook.com
Mind-Controlled Prosthetic Arm Restores Amputee Dexterity

Mind-Controlled Prosthetic Arm Restores Amputee Dexterity

Reuters - Innovations Video Online (Oct. 29, 2014) A Swedish amputee who became the first person to ever receive a brain controlled prosthetic arm is able to manipulate and handle delicate objects with an unprecedented level of dexterity. The device is connected directly to his bone, nerves and muscles, giving him the ability to control it with his thoughts. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Robots Get Funky on the Dance Floor

Robots Get Funky on the Dance Floor

AP (Oct. 29, 2014) Dancing, spinning and fighting robots are showing off their agility at "Robocomp" in Krakow. (Oct. 29) 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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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