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:5/27/2015)... The Academy of Model Aeronautics Foundation would like to ... Day. The third annual celebration will be August 15, 2015. ... aviation hobby nation-wide and to introduce model flying to the ... clubs to celebrate the hobby and share it with the ... also be a local event at the AMA headquarters in ...
(Date:5/27/2015)... TEL AVIV, Israel , May 27, 2015 /PRNewswire/ ... the first quarter ended March 31, 2015. ... "In the quarter, we continued pre-clinical work to generate ... still in an early stage, we are encouraged by ... in this field as new antibodies which modulate immune ...
(Date:5/27/2015)... , May 27, 2015  CytomX, a ... of cancer, today announced the appointments of ... Cynthia Ladd as senior vice president ... was chief financial officer of Onyx Pharmaceuticals, an ... independent consultant and legal counsel to several leading ...
(Date:5/27/2015)... 2015  Ceres, Inc. (Nasdaq: CERE ), an ... for a genetic sequence derived from soybean, covering uses ... development and plant transformation. The company believes that its ... are the target of a class of commercial herbicides. ... license to the innovation, including an opportunity for exclusivity ...
Breaking Biology Technology:Academy of Model Aeronautics Foundation to host National Model Aviation Day Motorcycle Rally and Family Fest in Muncie, IN 2Academy of Model Aeronautics Foundation to host National Model Aviation Day Motorcycle Rally and Family Fest in Muncie, IN 3Tikcro Technologies Reports First Quarter 2015 Results 2Tikcro Technologies Reports First Quarter 2015 Results 3CytomX Expands Executive Leadership Team 2CytomX Expands Executive Leadership Team 3Ceres Awarded Patent for Innovation in Soybean 2Ceres Awarded Patent for Innovation in Soybean 3
... MONTVALE, N.J., Feb. 5 Memory Pharmaceuticals,Corp. (Nasdaq: ... President and Chief,Executive Officer, will provide a company ... Conference on Tuesday, February 12, 2008 at 10:15 ... City., Interested parties may access the live ...
... VPHM ) today announced that Vincent Milano, ... will present at the BIO CEO &,Investor Conference ... 2008. The,conference is being held at the Waldorf=Astoria, ... webcast live for investors through, http://www.viropharma.com and ...
... PARK, Kan., Feb. 5 Physicians Reference,Laboratory ("PRL") announced ... HPV test to date. Under the marketed,name COMPLeTe Care ... all 15 high risk types of HPV which can ... second most common form of female,cancer with an incidence ...
Cached Biology Technology:Physicians Reference Laboratory Announces New Diagnostic for Women's Health 2
(Date:5/11/2015)... , May 11, 2015  Synaptics Incorporated (NASDAQ: ... interface solutions, today announced the appointment of ... Chief Financial Officer, reporting to Rick Bergman ... current Chief Financial Officer, Kathleen Bayless , ... Mr. Ali brings extensive financial management ...
(Date:5/7/2015)... , May 7, 2015 ... sensors, FPC1022 and FPC1035, FPC,s smallest touch fingerprint ... are mainly considered for integration on the backside ... smartphone OEMs increased possibilities to integrate touch fingerprint ... size also improves possibilities for module manufacturers to ...
(Date:4/27/2015)... , Apr. 27, 2015 Profile Solutions, Inc. ... and security systems is pleased to announce that Dr ... a consultant and member of its scientific advisory board. ... known as a thought leader in technology-enhanced learning models. ... Group, and has published studies and books focused on ...
Breaking Biology News(10 mins):Synaptics Appoints Wajid Ali as Senior Vice President and Chief Financial Officer 2FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4
... preference of dung beetles for specific types and conditions of ... to investigate their preference for dung from exotic mammals found ... of Dung Beetle ( Coleoptera : Scarabaeidae ) Attraction ... the latest edition of Environmental Entomology , Sean D. ...
... Using tiny tags to track a bird,s location, biologists from ... Golden-crowned Sparrows, which overwinter in California, go to breed in ... PLoS ONE , the study reveals for the first time ... breeding sites in coastal Alaska. During a ...
... veterinarians in Scotland leaves cats walking like robots. Meanwhile ... light on cats bred to become mummies in Egyptian ... for the UK,s largest ever veterinary event, the ... by SAGE, highlights these two fascinating studies among a ...
Cached Biology News:Exotic manure is sure to lure the dung connoisseur 2New technology tracks sparrow migration for first time from California to Alaska 2Robotic cats, a kitten mummy and a major UK vet gathering 2Robotic cats, a kitten mummy and a major UK vet gathering 3
Request Info...
DAP12 Market Segment: Protein Kinases...
Naphthol Blue Black, CI 20470...
Acid phosphatase (Potato). Monospecific by IEP. Some cross reactivity between Acid phosphatases of other species may occur....
Biology Products: