In-situ preparation of high optical quality ZnO nanoparticles in nanofibrous PVA matrix

2011 ◽  
Vol 65 (19-20) ◽  
pp. 2872-2876 ◽  
Author(s):  
S. Anitha ◽  
D. John Thiruvadigal ◽  
T.S. Natarajan
Keyword(s):  
Zno Nanoparticles ◽  
Optical Quality ◽  
High Optical Quality ◽  
In Situ Preparation

The Precursor Polymer Approach to Electrodeposition and Patterning of Conjugated Polymer Ultrathin Films

2001 ◽  
Vol 708 ◽  
Author(s):  
Rigoberto Advincula ◽  
Chuanjun Xia ◽  
Prasad Taranekar ◽  
Suxiang Deng ◽  
Ken Onishi
Keyword(s):  
Ultrathin Films ◽  
Optical Quality ◽  
Polymer Backbone ◽  
High Optical Quality ◽  
Electrode Surfaces ◽  
Flat Electrode ◽  
Precursor Polymer ◽  
Synthesis Design ◽  
Key Points

ABSTRACTIn this paper, we report strategies for electrodepositing and patterning ultrathin films of conjugated polymers on flat electrode surfaces using the precursor polymer approach. This involves a rational synthesis design of the precursor polymer followed by careful electrodeposition and characterization of ultrathin films on conducting substrates. This has resulted in the preparation of smooth, high optical quality films, which should be important for applications involving flat electrode surfaces in devices. Characterization was made using surface sensitive spectroscopic and microscopic techniques. Copolymerization with monomers, polymer backbone design, and grafting on modified surfaces are key points in this strategy. Novel methods of in-situ characterization techniques have also been developed combing electrochemistry and surface plasmon resonance techniques.

ELECTRONIC AND OPTICAL PROPERTIES OF QUASI-ONE-DIMENSIONAL CARRIERS IN QUANTUM WIRES

1995 ◽  
Vol 04 (01) ◽  
pp. 99-140 ◽  
Author(s):  
M. GRUNDMANN ◽  
J. CHRISTEN ◽  
D. BIMBERG ◽  
E. KAPON
Keyword(s):  
Optical Properties ◽  
Quantum Wells ◽  
Quantum Wires ◽  
Bulk Material ◽  
Theoretical Calculations ◽  
Optical Quality ◽  
Structural And Optical Properties ◽  
High Optical Quality ◽  
Intersubband Relaxation

We review structural and optical properties of quantum wires (QWRs), grown on nonplanar substrates. Our approach of in situ wire formation on patterned substrates allows us to fabricate defect free QWRs of high optical quality, suitable for laser and other optoelectronic applications. Several types of wires and wire arrangements are investigated in detail: single QWRs, vertical QWR stacks, lateral sub-μm pitch QWR arrays and pseudomorphic QWRs. Theoretical calculations are performed for electronic eigenstates (with inclusion of strain effects) as well as the lineshape of spontaneous radiative recombination. The lateral bandgap modulation, carrier capture into the QWRs, subsequent intersubband relaxation, cooling, interband recombination, and bandgap renormalization are systematically investigated and compared to current theories and previously obtained results for quantum wells or bulk material.

scholarly journals A Nanoscale Photonic Crystal Cavity Optomechanical System for Ultrasensitive Motion Sensing

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 462
Author(s):  
Ji Xia ◽  
Fuyin Wang ◽  
Chunyan Cao ◽  
Zhengliang Hu ◽  
Heng Yang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Cavity ◽  
Optical Quality ◽  
Optical Force ◽  
Mechanical Oscillator ◽  
Maximum Displacement ◽  
Optomechanical System ◽  
High Optical Quality ◽  
Hybrid Platform ◽  
Optomechanical Coupling

Optomechanical nanocavities open a new hybrid platform such that the interaction between an optical cavity and mechanical oscillator can be achieved on a nanophotonic scale. Owing to attractive advantages such as ultrasmall mass, high optical quality, small mode volume and flexible mechanics, a pair of coupled photonic crystal nanobeam (PCN) cavities are utilized in this paper to establish an optomechanical nanosystem, thus enabling strong optomechanical coupling effects. In coupled PCN cavities, one nanobeam with a mass meff~3 pg works as an in-plane movable mechanical oscillator at a fundamental frequency of . The other nanobeam couples light to excite optical fundamental supermodes at and 1554.464 nm with a larger than 4 × 104. Because of the optomechanical backaction arising from an optical force, abundant optomechanical phenomena in the unresolved sideband are observed in the movable nanobeam. Moreover, benefiting from the in-plane movement of the flexible nanobeam, we achieved a maximum displacement of the movable nanobeam as 1468 . These characteristics indicate that this optomechanical nanocavity is capable of ultrasensitive motion measurements.

Controllable in-situ preparation of high-coverage horizontal TiO2 nanosheet array

2021 ◽  
Vol 765 ◽  
pp. 138284
Author(s):  
Junqi Wang ◽  
Xiaoping Zou ◽  
Jialin Zhu ◽  
Jin Cheng ◽  
Xiao Bai ◽  
...  
Keyword(s):  
High Coverage ◽  
Nanosheet Array ◽  
In Situ Preparation
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