Navigation Links
Perfectly doped quantum dots yield colors to dye for
Date:5/10/2013

Quantum dots are tiny nanocrystals with extraordinary optical and electrical properties with possible uses in dye production, bioimaging, and solar energy production. Researchers at the University of Illinois at Chicago have developed a way to introduce precisely four copper ions into each and every quantum dot.

The introduction of these "guest" ions, called doping, opens up possibilities for fine-tuning the optical properties of the quantum dots and producing spectacular colors.

"When the crystallinity is perfect, the quantum dots do something that no one expected--they become very emissive and end up being the world's best dye," says Preston Snee, assistant professor of chemistry at UIC and principal investigator on the study.

The results are reported in the journal ACS Nano, available online in advance of print publication. Incorporating guest ions into the crystal lattice can be very challenging, says UIC graduate student Ali Jawaid, first author of the paper.

Controlling the number of ions in each quantum dot is tricky. Merely targeting an average number of guest ions will not produce quantum dots with optimal electrical and optical properties.

Jawaid developed a procedure that reliably produces perfect quantum dots, each doped with exactly four copper ions. Snee believes the method will enable them to substitute other guest ions with the same consistent results.

"This opens up the opportunity to study a wide array of doped quantum dot systems," he said.


'/>"/>

Contact: Jeanne Galatzer-Levy
jgala@uic.edu
312-996-1583
University of Illinois at Chicago
Source:Eurekalert

Page: 1

Related biology technology :

1. Building quantum states with individual silicon atoms
2. Quantum computers counting on carbon nanotubes
3. Laser-like photons signal major step towards quantum Internet
4. Nature: Smallest vibration sensor in the quantum world
5. Major grant to investigate limits of quantum theory
6. NIST mechanical micro-drum used as quantum memory
7. NIST quantum refrigerator offers extreme cooling and convenience
8. UCSB physicists make discovery in the quantum realm
9. Quantum Cures Announces Breakthrough Approach for Researchers Seeking Cures for Orphan and Rare Diseases
10. Connecting the (quantum) dots
11. NREL and partners demonstrate quantum dots that assemble themselves
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... most natural and synthetic processes prefer to settle ... or energyit is within the realm of non-equilibrium ... constant changes in energy and phases, such as ... conditions allow humans to regulate their body temperature, ... with seismic activity. , But even though ...
(Date:7/24/2014)... July 24, 2014 Your cell ... in modeling lithium-ion battery storage capacity. , New ... a theoretical model created at Lawrence Livermore ... that predicts how carbon components will perform as ... emphasizes the urgent need for higher-performance batteries. Several ...
(Date:7/24/2014)... July 24, 2014 Three companies from ... in Livestrong’s Big C Competition. Out of 700 competition ... headed to the semi-final round. In this round twenty ... accelerator program, complete with mentoring from thought-leaders and medical ... part of the angelMD commitment to the Livestrong vision ...
(Date:7/24/2014)... N.J. , July 24, 2014 ... provider of regulatory and ethical review services for ... Alliance Biosciences. Formerly a division of ... was the leading biosafety and biosecurity consulting firm ... With this addition, WCG,s biosafety division – WCG ...
Breaking Biology Technology:New approach to form non-equilibrium structures 2Getting More Life out of Lithium-ion Batteries 23 angelMD Startups Make Livestrong Big C Semi-finals 2WIRB-Copernicus Group Announces Acquisition of Alliance Biosciences; Executives Join WCG Biosafety Division 2WIRB-Copernicus Group Announces Acquisition of Alliance Biosciences; Executives Join WCG Biosafety Division 3
... Inc., developer of the VerifyNow® System, the first rapid and easy-to-use point-of-care system ... results of the GRAVITAS trial have been published in T he ... m erican M e dic a ... i o n (1). First presented at the American ...
... 15, 2011 The following is being issued by the ... Obama,s push for a greater investment in U.S. science, technology, ... of CNBC,s Sunday, March 13, broadcast of " The Wall ... interviews with The Pew Charitable Trusts President and ...
... CAMBRIDGE, Mass., March 15, 2011 Biotechnology company ... operations in Cambridge, Massachusetts and is advancing its ... and monitoring tool for celiac disease. The company ... targeted immunotherapies from Nexpep Pty., Ltd., based in ...
Cached Biology Technology:Accumetrics Announces Publication of GRAVITAS Primary Results in JAMA 2Accumetrics Announces Publication of GRAVITAS Primary Results in JAMA 3Investing in Biomedical Innovation 2Start-Up ImmusanT Seeks to Restore Tolerance to Gluten in Celiac Disease with Immunotherapy 2Start-Up ImmusanT Seeks to Restore Tolerance to Gluten in Celiac Disease with Immunotherapy 3Start-Up ImmusanT Seeks to Restore Tolerance to Gluten in Celiac Disease with Immunotherapy 4
(Date:7/25/2014)... a molecular testing panel developed at UPMC greatly ... surgery for patients with thyroid nodules and cancer, ... Institute (UPCI), partner with UPMC CancerCenter., The test, ... other diagnostic testing agencies, improved the chances of ... percent, according to the study published this month ...
(Date:7/24/2014)... July 24, 2014 -- Keryx Biopharmaceuticals, Inc. (Nasdaq:KERX) (the ... randomized, active control Phase 3 study of Zerenex (ferric ... for the treatment of hyperphosphatemia in patients with end-stage ... binding and iRon delivery with FErric CiTrate in EsrD) ... the American Society of Nephrology ( JASN ). ...
(Date:7/24/2014)... on different species of fish, according to a ... Exeter which tested fish anti-predator behaviour. , ... predator model when exposed to additional noise, whereas ... , Lead author Dr Irene Voellmy of Bristol,s ... many aquatic environments have increased substantially during the ...
Breaking Biology News(10 mins):Test increases odds of correct surgery for thyroid cancer patients 2Test increases odds of correct surgery for thyroid cancer patients 3Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 2Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 3Zerenex™ (ferric citrate) long-term Phase 3 study results published in JASN 4
... on interdisciplinary research is now leading to breakthroughs in ... has become a reality. Four years ago, ... research project herself when she started with her team ... Together with colleagues at the Nano-Science Center, her team ...
... a fatty fast food meal is never good for you, ... worse, according to a new University of Guelph study. ... person,s blood sugar levels spike after eating a high-fat meal, ... meal and caffeinated coffee jumping to levels similar to ...
... NEW YORK, March 31, 2011 Hoyos Group ... Chief Marketing Officer, effective April 1, 2011. ... a member of Hoyos Group,s senior executive team, ... marketing, strategic business development, brand strategy, positioning and ...
Cached Biology News:From science fiction to research breakthrough 2Got a craving for fast food? Skip the coffee, study says 2Hoyos Group Appoints Anthony Antolino as Chief Marketing Officer 2Hoyos Group Appoints Anthony Antolino as Chief Marketing Officer 3
This Dedicated 18" X 18" (45.7 X 45.7 cm.) shaker platforms are optimized for a particular flask clip size. Dedicated platforms come fully loaded with flask clips....
... VARIOKLAV 75 S and 135 S steam sterilizers ... bottoms combine the advantages of a double-walled device ... effective deaeration and drying by built-in jacket heater ... fast cooling. The chamber is free of furnishings ...
... Shakers combine high durability and performance ... The patented triple-counterbalanced heavy-duty mechanism ... run with heavy out-of-balance loads. ... contamination. The heavy stainless steel ...
... 4300 System features Saga GT , is ... automates electrophoresis, lane finding, location of standards, ... ,Saga GT is second generation software ... initially developed at the University of Washington ...
Biology Products: