Navigation Links
Perfectly doped quantum dots yield colors to dye for

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
University of Illinois at Chicago

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:
(Date:10/12/2015)... , Oct. 12, 2015  Rebiotix Inc. ... (FDA) has designated its lead Microbiota Restoration Therapy ... treatment of recurrent Clostridium difficile (C ... infection that causes 29,000 deaths in the U.S. ... biotechnology company that was founded to revolutionize the ...
(Date:10/12/2015)... octubre de 2015 El 8 de octubre, ... récord en el congreso con su declaración acerca del ... Plasma Awareness Week (IPAW), que se celebrará del 11 ... la Plasma Protein Therapeutics Association (PPTA) y ... , Aumentar la concienciación mundial acerca de la donación ...
(Date:10/12/2015)... Oct. 12, 2015  Patara Pharma, a clinical-stage ... inflammatory diseases and conditions, today announced the closing ... financing. Concurrent with the close of its sale ... Loan and Security Agreement with Silicon Valley Bank ... million. Patara will use the funds from the ...
(Date:10/12/2015)... October 12, 2015 ... version for enriched online experience --> ... to print version for enriched online experience ... media alternative to print version for enriched online ... of scientific, technical and medical information products and services, ...
Breaking Biology Technology:
(Date:9/24/2015)... Publiceringsförbud fram till: ... Kerv ( ), det Londonbaserade ... första kontaktlösa betalningsring på i ett ... för massproduktion via crowdfunding.       ... Kerv-bärare kan göra direkta kontaktlösa betalningar ...
(Date:9/10/2015)... Report Details The global wearable technology market ... of revenues, consumer adoption and even technological advances. However, ... begin to achieve that mass market acceptance that has ... the entrance of Apple to the SmartWatches market, which ... overall size of the wearable technology market. Visiongain ...
(Date:9/9/2015)... , Sept. 9, 2015  NuData Security ... and solution-based milestones, furthering the company,s commitment to ... online fraud. NuData Security,s online fraud ... the company,s growth cycle. The product combines continual ... determine good user behavior from fraudulent behavior, allowing ...
Breaking Biology News(10 mins):