Navigation Links
Penn research advances understanding of lead selenide nanowires
Date:4/8/2011

n and analysis, they kept the nanowires clean, allowing them to discover the unique properties of these lead selenide nanomaterials.

Researchers designed experiments allowing them to separate the influence of the metal "wiring" on the motion of electrons and holes from that of the behavior intrinsic to the lead selenide nanowires. By controlling the exposure of the semiconductor nanowire device to oxygen or the chemical hydrazine, they were able to change the conductive properties between p-type and n-type. Altering the duration and concentration of the exposure, the nanowire device type could be flipped back and forth.

"If you expose the surfaces of these structures, which are unique to nanoscale materials, you can make them p-type, you can make them n-type, and you can make them somewhere in between, where it can conduct both electrons and holes," Kagan said. "This is what we call 'ambipolar.'"

Devices combining one n-type and one p-type semiconductor are used in many high-tech applications, ranging from the circuits of everyday electronics, to solar cells and thermoelectrics, which can convert heat into electricity.

"Thinking about how we can build these things and take advantage of the characteristics of nanoscale materials is really what this new understanding allows," Kagan said.

Figuring out the characteristics of nanoscale materials and their behavior in device structures are the first steps in looking forward to their applications.

These lead selenide nanowires are attractive because they may be synthesized by low-cost methods in large quantities.

"Compared to the big machinery you need to make other semiconductor devices, it's significantly cheaper," Kagan said. "It doesn't look much more complicated than the hoods people would recognize from when they had to take chemistry lab."

In addition to the low cost, the manufacturing process for lead selenide nanowires is relatively easy and c
'/>"/>

Contact: Evan Lerner
elerner@upenn.edu
215-573-6604
University of Pennsylvania
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Zacharon Pharmaceuticals Announces Research and Development Collaboration With Pfizer to Develop Drugs for Multiple Rare Disorders
2. Caliper Announces New Oncology Research Collaboration
3. Nanocrystal doping developed by Hebrew University researchers enhances semiconductor nanocrystals
4. Generex Announces Publication of Comparative Peptide Vaccine Studies in Peer Review Journal Demonstrating Superiority of AE37 and Presentation at the American Association for Cancer Research
5. New Research Holds Promise for Gene Engineering and Therapy
6. TGen and Scottsdale Healthcare researchers discover microRNA role in brain metastasis
7. Transgenomic, Inc. Presentations to Describe High-Sensitivity Detection of Cancer Biomarkers at the 2011 American Association for Cancer Research Meeting
8. Carnegie Mellon researchers electrify polymerization
9. LasikPlusĀ® Research Reveals Excellent Results From Modern LASIK
10. Stanford researchers use river water and salty ocean water to generate electricity
11. Marshall Edwards to Report new Data on Mitochondrial Inhibitor Program at American Association for Cancer Research Annual Meeting
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2015)... , Aug. 27, 2015  Neogen Corporation (NASDAQ: ... stock of United Kingdom -based Lab ... culture media and diagnostic systems. Lab ... a leading provider of microbial testing and diagnostic products ... markets. The company currently sells into more than 70 ...
(Date:8/27/2015)... -- HUYA Bioscience International (HUYA) today announced the sponsorship of ... HTLV-1, held this week at the University of Tokyo ... is to promote research on HTLV-1 and HTLV-1-associated diseases, ... research related to these fields to advance science, the ... to support this prestigious conference," said Mireille Gillings ...
(Date:8/27/2015)... ... August 27, 2015 , ... Proove ... new data on the relationship of genetics and hypertension at the International ... Disease in Vancouver, British Columbia, Canada. The event, which boasts an extensive overview ...
(Date:8/26/2015)... , Aug. 26, 2015  The Diabetes ... the University of Miami Miller School of Medicine, ... clinical trial to test for the first time ... successfully completed.  This FDA approved Phase I/II study ... transplantation and is an important first step toward ...
Breaking Biology Technology:Neogen acquires U.K.-based Lab M Holdings 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 2Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 2Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 4
... constant currency revenue growth of 12.9 percent,- Full year ... and improving profitability reflects success of strategic ... for fiscal year 2009, BATESVILLE, Ind., Nov. 10 ... financial results for its fiscal,fourth quarter ended September 30, ...
... Incorporated,(Nasdaq: SPEX ) reported that the Nasdaq Stock ... its common stock from the Nasdaq,Global Market to the ... trading on the Nasdaq Capital Market on November 11, ... three market tier designations for,Nasdaq-listed stocks, and presently includes ...
... Conference Call Today at 4:30 p.m. Eastern Time -, ... MDVN ) today reported on its corporate progress and ... "The third quarter represented another quarter of significant,achievement and ... partnering,agreement with Pfizer for Dimebon. This collaboration not only ...
Cached Biology Technology:Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 2Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 3Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 4Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 5Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 6Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 7Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 8Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 9Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 10Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 11Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 12Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 13Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 14Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 15Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 16Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 17Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 18Hill-Rom Reports Fourth Quarter Revenue Growth of 14.1 Percent to $424 Million and Adjusted Earnings Per Fully Diluted Share From Continuing Operations of $0.58, an Increase of 52.6 Percent From the Prior Year 19Spherix Transfers Stock Listing to Nasdaq Capital Market 2Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 2Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 3Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 4Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 5Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 6Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 7Medivation Reports Third Quarter 2008 Financial Results and Provides Corporate Update 8
(Date:7/31/2015)... Conn. , Jul. 31, 2015 NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... that it has filed provisional patent 62/198989 for ... This invention highlights a method to advance crypto-currencies such ... by introducing a common, uniform way to manage all ...
(Date:7/30/2015)... 30, 2015 Cellecta, Inc., a U.S.-based ... analysis and biomarker discovery, announced the release of ... targeting all human protein coding genes. CRISPR technology ... a gene,s function. Cellecta,s new Human Whole Genome ... tool so that researchers can investigate in a ...
(Date:7/27/2015)... , July 27, 2015   Zynx ... and experience-based clinical improvement solutions, today announced that ... is now available on Android smartphones and tablets. ... and post-care organizations can use ZynxCarebook to securely ... patient,s condition, streamline care transitions to other care ...
Breaking Biology News(10 mins):NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3
... HOUSTON, Oct. 22, 2010 Researchers can spend entire ... efforts featured in the pages of Science , ... won,t be the case, though, for two junior faculty ... Jacinta Conrad and Jeff Rimer, both assistant ...
... LA Research conducted by scientists at LSU Health Sciences ... brain act as valves to turn the hormone that regulates ... may lead to advances in treatment for diseases like high ... The research is published in the November 1, 2010 issue ...
... received two grants from the California Institutefor Regenerative Medicine ... treating neurological diseases and liver failure. The goal of ... toward the development of potential therapies within the next ... successful, they could then be further prepared as potential ...
Cached Biology News:UH engineering professors featured in consecutive issues of Science 2UH engineering professors featured in consecutive issues of Science 3LSUHSC study IDs proteins regulating water retention in salt-sensitive hypertension 2UCSF stem-cell based-neurological, liver therapy strategies advanced 2UCSF stem-cell based-neurological, liver therapy strategies advanced 3UCSF stem-cell based-neurological, liver therapy strategies advanced 4
... StabilZyme AP Conjugate Stabilizer is ... purified bovine protein and other non-toxic ... (4-Morpholine-ethanesulfonic acid), pH 5.5 6.5. ... of 0.02% methylisothiazolone and 0.02% bromonitrodioxane ...
... When nonspecific binding is a ... a variety of immobilized NeutrAvidin products ... streptavidin. NeutrAvidin is a modified avidin ... to provide a biotin-binding protein with ...
Cells are grown to a specified density and induced, when necessary. Protein expression samples are collected at 3 growth points and analyzed by SDS-PAGE/Coomassie....
... generated hybridomas against a large variety ... you are provided with personalized project ... lines developed by Covance remain exclusive ... hybridoma development project has four phases: ...
Biology Products: