Navigation Links
Magnetic memory and logic could achieve ultimate energy efficiency
Date:7/1/2011

r, allowing simple logic operations.

"The magnets themselves are the built-in memory," Lambson said. "The real challenge is getting the wires and transistors working."

Lambson showed through calculations and computer simulations that a simple memory operation erasing a magnetic bit, an operation often called "restore to one" can be conducted with an energy dissipation very close, if not identical to, the Landauer limit.

He subsequently analyzed a simple magnetic logical operation. The first successful demonstration of a logical operation using magnetic nanoparticles was achieved by researchers at the University of Notre Dame in 2006. In that case, they built a three-input majority logic gate using 16 coupled nanomagnets. Lambson calculated that a computation with such a circuit would also dissipate energy at the Landauer limit.

Because the Landauer limit is proportional to temperature, circuits cooled to low temperatures would be even more efficient.

At the moment, electrical currents are used to generate a magnetic field to erase or flip the polarity of nanomagnets, which dissipates a lot of energy. Ideally, new materials will make electrical currents unnecessary, except perhaps for relaying information from one chip to another.

"Then you can start thinking about operating these circuits at the upper efficiency limits," Lambson said.

"We are working now with collaborators to figure out a way to put that energy in without using a magnetic field, which is very hard to do efficiently," Bokor said. "A multiferroic material, for example, may be able to control magnetism directly with a voltage rather than an external magnetic field."

Other obstacles remain as well. For example, as researchers push the power consumption down, devices become more susceptible to random fluctuations from thermal effects, stray electromagnetic fields and other kinds of noise.

"The magnetic technology we are
'/>"/>

Contact: Robert Sanders
rsanders@berkeley.edu
510-643-6998
University of California - Berkeley
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Sulfates in extreme places, DNA tied in knots and magnetic cooling at crystallography meeting
2. UMD scientists make magnetic new graphene discovery
3. Physicists measure current-induced torque in nonvolatile magnetic memory devices
4. Smallest magnetic field sensor in the world
5. Electric current moves magnetic vortices
6. Graphene under strain creates gigantic pseudo-magnetic fields
7. Magnetic fields drive drug-loaded nanoparticles to reduce blood vessel blockages in an animal study
8. Brown physicist discovers odd, fluctuating magnetic waves
9. Using magnetic toys as inspiration, researchers tease out structures of self-assembled clusters
10. Magnetic mixing creates quite a stir
11. Researchers design new graphene-based, nanomaterial with magnetic properties
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Magnetic memory and logic could achieve ultimate energy efficiency
(Date:1/22/2015)... (PRWEB) January 21, 2015 Cambridge Semantics, the ... technology, today announced that 2014 was a record-breaking year across ... capabilities of the Anzo Smart Data Platform and our Smart ... utilize insights from diverse data which led to record growth ...
(Date:1/22/2015)... 22, 2015 Crystal Diagnostics (CDx) Xpress System, ... has received AOAC-PTM Certifications for the six non-O157 Shiga toxin-producing ... collectively referred to as STEC or the “Big-6”) as well ... unit (cfu) per 325 g of raw ground beef and ...
(Date:1/22/2015)... January 22, 2015 Dr. Greg Leyer of ... annual Scripps Natural Supplements Pre-Conference seminar on probiotics in San ... an annual continuing education conference for health care professionals. This ... the topic of probiotics in health. Dr. Leyer spoke about ...
(Date:1/22/2015)... Denville, NJ (PRWEB) January 22, 2015 ... shearing technologies such as the Bioruptor® and complete ... semi-automation system for chromatin immunoprecipitation, alleviating the need ... reagents and controls needed for ChIP of histones ...
Breaking Biology Technology:Cambridge Semantics Announces Record Results for 2014 2Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2
... scientist Seth Dobrin, Ph.D., has been named the new head ... the Marshfield Clinic Research Foundation. , ,He plans to apply ... mental health and development of new genetic and genomics tools. ... earlier in his career as well as discoveries at Marshfield ...
... -- Wisconsin residents would lose their ability ... landfills in the state under legislation proposed by state ... said he would introduce legislation similar to that he ... the original proposal. He expects broad legislative support for ...
... Corp . of Waukesha, Wis., has announced that ... art supply retailer, will implement RedPrairie DLx Warehouse and RedPrairie ... gain supply chain efficiencies. Blick, based in Highland Park, Ill., ... stores, catalogues and the Internet. , , ...
Cached Biology Technology:Bill would ban computers from landfills 2Bill would ban computers from landfills 3
(Date:1/22/2015)... Issued by Small Cap IR. In 2011, Nilson Report,s annual ... merchants on the leading payment cards rose to $135.3 billion ... prepaid cards reached 6.54 billion.  Eight million credit card users ... 2012, and credit and debit card fraud resulted in $11.27 ...
(Date:1/22/2015)... 22, 2015   EyeLock, Inc. , a market leader of ... Steve Gerber to the new role of Senior Vice ... leading development of mobile platforms and wearable solutions for EyeLock,s ... innovation in the semiconductor industry to his role at EyeLock, ...
(Date:12/22/2014)... SHELTON, Conn. , Dec. 22, 2014  NXT-ID, Inc. (NASDAQ: ... a biometric authentication company focused on the growing mobile commerce ... consultant, Apollo Robbins for the 2015 International CES ... Apollo Robbins will be at the NXT-ID booth ...
Breaking Biology News(10 mins):$4.80 Near Term Price Target with "Buy" given by CapRock Research for NXT-ID, Inc. (NASDAQ: NXTD) issued by Small Cap IR 2EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4
... Morphology: Fundamentals and Applications (CRC Publisher, 2009), a ... Frank Y. Shih http://web.njit.edu/shih offers a ... their relation to image processing. More than merely ... places this knowledge into a theoretical framework. Morphology ...
... sophisticated electric ion propulsion system has been switched on ... milestone in the satellite,s post-launch commissioning phase. The ... controlling the satellite,s orbit and speed. The push from ... the tiny amount of drag generated by the few ...
... Applications (CRC Publisher, 2009), a new reference book ... http://web.njit.edu/shih offers a comprehensive overview of ... image processing. More than merely a tutorial on ... into a theoretical framework. Morphology is the identification, ...
Cached Biology News:Image processing and mathematical morphology in new text by NJIT professor 2GOCE's electric ion propulsion engine switched on 2Image processing and mathematical morphology in new text by NJIT prof 2
... Once a macromolecular structure has been determined, ... to a widely diverse audience of scientists, ... printed literature and dissemination over the Internet, ... personal web pages. Printed literature has the ...
... 45° Fixed Angle rotor for ... CL2, Centra CL3/CL3R, HN-SII or ... style rotor accepts 15 mL ... disposable conical tubes as well ...
... microfractionaction, spotting and preparation for MS analysis. ... eluent can be accurately and continuously spotted ... Matrix solutions can be added automatically. This ... for MALDI-TOF-MS measurements. By using it in ...
Glycerokinase; from Bacillus stearothermophilus...
Biology Products: