نتایج جستجو برای: qd lasers

تعداد نتایج: 26741  

2010
Vanessa Wood Vladimir Bulović

Colloidal quantum dot light-emitting devices (QD-LEDs) have generated considerable interest for applications such as thin film displays with improved color saturation and white lighting with a high color rendering index (CRI). We review the key advantages of using quantum dots (QDs) in display and lighting applications, including their color purity, solution processability, and stability. After...

Journal: :Applied Numerical Analysis & Computational Mathematics 2005

2015
Jean M Feugang Ramey C Youngblood Jonathan M Greene Scott T Willard Peter L Ryan

BACKGROUND The fertility performance of animals is still a mystery and the full comprehension of mammalian gametes maturation and early embryonic development remains to be elucidated. The recent development in nanotechnology offers a new opportunity for real-time study of reproductive cells in their physiological environments. As a first step toward that goal, we evaluated the effectiveness of ...

Journal: :Nano letters 2011
Jianbo Gao Joseph M Luther Octavi E Semonin Randy J Ellingson Arthur J Nozik Matthew C Beard

The current-voltage (J-V) characteristics of ZnO/PbS quantum dot (QD) solar cells show a QD size-dependent behavior resulting from a Schottky junction that forms at the back metal electrode opposing the desirable diode formed between the ZnO and PbS QD layers. We study a QD size-dependent roll-over effect that refers to the saturation of photocurrent in forward bias and crossover effect which o...

Journal: :Journal of the American Chemical Society 2004
Aaron R Clapp Igor L Medintz J Matthew Mauro Brent R Fisher Moungi G Bawendi Hedi Mattoussi

We used luminescent CdSe-ZnS core-shell quantum dots (QDs) as energy donors in fluorescent resonance energy transfer (FRET) assays. Engineered maltose binding protein (MBP) appended with an oligohistidine tail and labeled with an acceptor dye (Cy3) was immobilized on the nanocrystals via a noncovalent self-assembly scheme. This configuration allowed accurate control of the donor-acceptor separa...

Journal: :Discrete Mathematics & Theoretical Computer Science 2015
Jernej Azarija Sandi Klavzar Jaehun Lee Yoomi Rho

If f is a binary word and d a positive integer, then the generalized Fibonacci cube Qd(f) is the graph obtained from the d-cube Qd by removing all the vertices that contain f as a factor, while the generalized Lucas cube Qd( ↽Ð f ) is the graph obtained from Qd by removing all the vertices that have a circulation containing f as a factor. The Fibonacci cube Γd and the Lucas cube Λd are the grap...

Journal: :Discrete Mathematics 2012
Aleksandar Ilic Sandi Klavzar Yoomi Rho

Generalized Fibonacci cube Qd(f) is introduced as the graph obtained from the d-cube Qd by removing all vertices that contain a given binary string f as a substring. In this notation the Fibonacci cube Γd is Qd(11). The question whether Qd(f) is an isometric subgraph of Qd is studied. Embeddable and nonembeddable infinite series are given. The question is completely solved for strings f of leng...

2017
Yangyang Xie Chong Geng Yiqun Gao Jay Guoxu Liu Zi-Hui Zhang Yonghui Zhang Shu Xu Wengang Bi

In this report, to tackle the thermal fluorescent quenching issue of II-VI semiconductor quantum dots (QDs), which hinders their on-chip packaging application to light-emitting diodes (LEDs), a QD-ZnS nanosheet inorganic assembly monolith (QD-ZnS NIAM) is developed through chemisorption of QDs on the surface of two-dimensional (2D) ZnS nanosheets and subsequent assembly of the nanosheets into a...

2001
Yu Zhu Qing-feng Sun Tsung-han Lin

An extraordinary temperature dependence of the resonant Andreev reflection via discrete energy level in a normal-metal / quantum-dot / superconductor (N-QD-S) system is predicted theoretically by using Green function technique. The width of zero bias conductance peak in N-QD-S is about √ ΓL + Γ 2 R and does not exhibit thermal broadening, where ΓL and ΓR are the coupling strength between QD and...

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