Navigation Links
Flexing fingers for micro-robotics: Berkeley Lab scientists create a powerful, microscale actuator
Date:12/17/2012

Berkeley, Calif., Dec.17,2012Researchers with the U.S. Department of Energy (DOE)'s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley, have developed an elegant and powerful new microscale actuator that can flex like a tiny beckoning finger. Based on an oxide material that expands and contracts dramatically in response to a small temperature variation, the actuators are smaller than the width of a human hair and are promising for microfluidics, drug delivery, and artificial muscles.

"We believe our microactuator is more efficient and powerful than any current microscale actuation technology, including human muscle cells," says Berkeley Lab and UC Berkeley scientist Junqiao Wu. "What's more, it uses this very interesting materialvanadium dioxideand tells us more about the fundamental materials science of phase transitions."

Wu is corresponding author of a paper appearing in Nano Letters this month that reports these findings, titled "Giant-Amplitude, High-Work Density Microactuators with Phase Transition Activated Nanolayer Bimorphs." As often happens in science, Wu and his colleagues arrived at the microactuator idea by accident, while studying a different problem.

Vanadium dioxide is a textbook example of a strongly correlated material, meaning the behavior of each electron is inextricably tied to its neighboring electrons. The resulting exotic electronic behaviors have made vanadium dioxide an object of scientific scrutiny for decades, much of it focused on an unusual pair of phase transitions.

When heated past 67 degrees Celsius, vanadium dioxide transforms from an insulator to a metal, accompanied by a structural phase transition that shrinks the material in one dimension while expanding in the other two. For decades, researchers have debated whether one of these phase transitions drives the other or if they are separate phenomena that coincidentally occur at the sam
'/>"/>

Contact: Alison Hatt
ajhatt@lbl.gov
510-495-2391
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. The power to heal at the tips of your fingers
2. Self-assembling nanorods: Berkeley Lab researchers obtain 1-, 2- and 3-D nanorod arrays and networks
3. Berkeley Lab Director Paul Alivisatos wins Wolf Prize in Chemistry
4. Berkeley Lab seeks to help US assert scientific leadership in critical materials
5. Spanish scientists design a revolutionary data storage device
6. USC scientists clone carbon nanotubes to unlock their potential for use in electronics
7. UC Santa Barbara scientists learn how to unlock the destiny of a cell: A gift for the tin man?
8. Nanotechnology helps scientists keep silver shiny
9. Scientists demonstrate high-efficiency quantum dot solar cells
10. Scientists target bacterial transfer of resistance genes
11. Scientists identify mammal model of bladder regeneration
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Flexing fingers for micro-robotics:  Berkeley Lab scientists create a powerful, microscale actuator
(Date:9/30/2014)... Mass. Using a bio-mimicking analog of one ... grass, an international research team led by Alejandro ... taken a major step in developing long-sought polymer ... electricity for use in electronic devices. , ... Amherst and others at Stanford University and Dresden ...
(Date:9/30/2014)... September 30, 2014 Shimadzu Scientific ... an easy-to-use and highly precise tool for measuring ... considerable elongation. With 1000-mm maximum movement distance, the ... for a gauge length of 10 mm. In ... accuracy above 50-mm stroke and within +/- 100 ...
(Date:9/30/2014)... 30, 2014 Proove Biosciences , ... excited to announce a new genetic test built upon ... Pain Perception Test will provide physicians with an ... pain tolerance levels are stratified between individuals. With this ... a person has a genetic predisposition that will affect ...
(Date:9/30/2014)... , Sept. 30, 2014 CORD:USE Cord Blood ... announce that it has entered into an Equity and ... which has licensed a series of patented technologies for the ... possible clinical applications.  Tianhe is performing Phase I/II clinical ... Spain using Tianhe,s Stem Cell Educator ...
Breaking Biology Technology:Blades of grass inspire advance in organic solar cells 2Blades of grass inspire advance in organic solar cells 3Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 2CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 3CORD:USE is Pleased to Announce it has Partnered with Tianhe Stem Cell Biotechnologies, Developer of Cord Blood Stem Cell Therapy Showing Promising Results in Clinical Trials for the Treatment of Diabetes and Autoimmune Diseases 4
... second can make the difference between life and death, ... sensors" that allow for faster response times from military ... NC State that will help ensure those sensors will ... Afghanistan or elsewhere. "We,ve taken a sensor material ...
... ... of 2007 and to enhance patient safety with complete part traceability, can now use ... coding, scan and software tracking of each part and batch, including all leak test, ... ...
... the pleasantness of novel odors, just like a human ... notion that smell is completely personal and culture-specific. The ... Wolfson Medical Center, argue that the perception of an ... and it is only within specific contexts that personal ...
Cached Biology Technology:InterTech Development Company UDI System Announced 2Odor pleasantness shown to be partly hard-wired 2Odor pleasantness shown to be partly hard-wired 3
(Date:10/1/2014)... to take a healthy salad up a level by ... cancer in leafy greens. , "In the long run, ... eating the salad or making a pill from the ... engineering at Case Western Reserve School of Medicine and ... breast cancer organization is funding the research with a ...
(Date:9/30/2014)... each year, but its deep-blue waters host the ... alien species, including fish, crustaceans, and algae are ... In the open-access journal Frontiers in Marine ... data from a new information system developed by ... of alien species has changed the native biodiversity ...
(Date:9/30/2014)... Ocean Health Index rates the Earth,s oceans at ... addition, for the first time, the report assessed ... national jurisdiction (high-seas areas) all critical regions ... providing sustainable food sources. , In the third ... by scientists from UC Santa Barbara,s National Center ...
Breaking Biology News(10 mins):Scientists wield plant viruses against deadly human disease 2Scientists wield plant viruses against deadly human disease 3Biodiversity in the Mediterranean is threatened by alien species 2Rating the planet's oceans 2Rating the planet's oceans 3
... new map of the potato genome that may lead ... help feed the world,s hungry. By sequencing and ... consortium has, for the first time, tied specific potato ... and development of potatoes may enable scientists and breeders ...
... Institute, one of the National Institutes of Health, has ... of Medicine each approximately $2.3 million a year for ... Glycosciences. Gerald Hart, Ph.D., director of biological chemistry and ... will lead these independent efforts to better understand the ...
... TORONTO, Ont., July 12, 2001--Eating nuts every day could ... according to new research from St. Michael,s Hospital and ... online by the journal Diabetes Care , a ... of Toronto Department of Nutritional Sciences; St. Michael,s Hospital ...
Cached Biology News:Johns Hopkins researchers awarded $32 million 2A 'nutty' solution to type 2 diabetes management 2