Multidecker Sandwich Complexes VnBenn+1 (n = 1, 2, 3) as Stronger Electron Donor Relative to Ferrocene for Designing High-Performance Organometallic Second-Order NLO Chromophores: Evident Layer Effect on the First Hyperpolarizability and Two-Dimensional NLO Character

2015 ◽  
Vol 119 (10) ◽  
pp. 5589-5595 ◽  
Author(s):  
Shu-Jian Wang ◽  
Yin-Feng Wang ◽  
Chenxin Cai
Keyword(s):  
Electron Donor ◽  
High Performance ◽  
Second Order ◽  
Two Dimensional ◽  
First Hyperpolarizability ◽  
Sandwich Complexes ◽  
Layer Effect ◽  
Nlo Chromophores

Synthesis and properties of a new second-order NLO chromophore containing the benzo[b]furan moiety for electro-optical materials

RSC Advances ◽  
2014 ◽  
Vol 4 (63) ◽  
pp. 33312-33318 ◽  
Author(s):  
Maolin Zhang ◽  
Guowei Deng ◽  
Airui Zhang ◽  
Huajun Xu ◽  
Heyan Huang ◽  
...  
Keyword(s):  
Electron Donor ◽  
Optical Materials ◽  
Furan Ring ◽  
Second Order ◽  
Donor Group ◽  
Nlo Chromophores ◽  
Furan Moiety

We have designed and synthesized a new chromophore having a 1,1,7,7-tetramethyljulolidine fused furan ring as the electron donor group to systematically investigate the role of the benzo[b]furan ring in NLO chromophores.

scholarly journals Synthesis and characterization of novel second-order NLO-chromophores bearing pyrrole as an electron donor group

Tetrahedron ◽  
2012 ◽  
Vol 68 (39) ◽  
pp. 8147-8155 ◽  
Author(s):  
M. Cidália R. Castro ◽  
M. Belsley ◽  
A. Maurício C. Fonseca ◽  
M. Manuela M. Raposo
Keyword(s):  
Electron Donor ◽  
Second Order ◽  
Synthesis And Characterization ◽  
Donor Group ◽  
Nlo Chromophores

Ultra-High-Tg Chromophoric Polyimides and Polyureas as High-Performance Nonlinear Optical Materials

1995 ◽  
Vol 413 ◽  
Author(s):  
Lifeng Geng ◽  
Jiafu Wang ◽  
Tobin J. Marks ◽  
Weiping Lin ◽  
Haitian Zhou ◽  
...  
Keyword(s):  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Second Order ◽  
Nonlinear Optical Materials ◽  
Careful Attention ◽  
Nlo Materials ◽  
Nlo Chromophores ◽  
Diallylbisphenol A ◽  
Aging In Air

ABSTRACTThree approaches to the construction of high-Tg polyimides and polyureas as second-order NLO materials are discussed. In the first approach, copolymerization of bismaleimides with o,o‚-diallylbisphenol-A followed by functionalization with high-β NLO chromophores using a Mitsunobu procedure yields, after poling and curing, a series of heavily crosslinked chromophoric polyimides with Tg values as high as 320°C and partially resonant χ(2) responses as high as 1.0×10-7 esu (42 pm/V at 1064 nm, 1.17 eV). In the second two approaches, copolymerization of the chromophore 4,5-bis(4‚-aminophenyl)-2-(4„- nitrophenyl)imidazole with bismaleimides or diisocyanates yields polyimides and polyureas with Tg values as high as 292°C and partially resonant χ(2)values as high as 0.62× 10-7 esu(25 pm/V at 1064 nm). It is found that careful attention to the details of curing and crosslinking during poling results in NLO- active matrices exhibiting negligible decay in ( on aging in air at 100°C for periods of 1,000-4,000 h. The imidazole based materials exhibit only about 10% χ(2) decay on aging for 100 h at 200°C under N2.

Synthesis and properties of novel second-order NLO chromophores containing pyrrole as an auxiliary electron donor

2008 ◽  
Vol 18 (15) ◽  
pp. 1756 ◽  
Author(s):  
Xiaohua Ma ◽  
Ran Liang ◽  
Fan Yang ◽  
Zhenhua Zhao ◽  
Aixin Zhang ◽  
...  
Keyword(s):  
Electron Donor ◽  
Second Order ◽  
Nlo Chromophores

Co-planar two-dimensional Metal-Insulator-Semiconductor Capacitor: Numerical study of the device electrostatics.

2017 ◽  
Author(s):  
Varun Bheemireddy
Keyword(s):  
Space Charge ◽  
High Performance ◽  
Numerical Study ◽  
2D Materials ◽  
Space Charge Density ◽  
Two Dimensional ◽  
Short Channel ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
New Family

The two-dimensional(2D) materials are highly promising candidates to realise elegant and e cient transistor. In the present letter, we conjecture a novel co-planar metal-insulator-semiconductor(MIS) device(capacitor) completely based on lateral 2D materials architecture and perform numerical study of the capacitor with a particular emphasis on its di erences with the conventional 3D MIS electrostatics. The space-charge density features a long charge-tail extending into the bulk of the semiconductor as opposed to the rapid decay in 3D capacitor. Equivalently, total space-charge and semiconductor capacitance densities are atleast an order of magnitude more in 2D semiconductor. In contrast to the bulk capacitor, expansion of maximum depletion width in 2D semiconductor is observed with increasing doping concentration due to lower electrostatic screening. The heuristic approach of performance analysis(2D vs 3D) for digital-logic transistor suggest higher ON-OFF current ratio in the long-channel limit even without third dimension and considerable room to maximise the performance of short-channel transistor. The present results could potentially trigger the exploration of new family of co-planar at transistors that could play a signi significant role in the future low-power and/or high performance electronics.<br>

Integrable two-dimensional dynamical systems and the characteristic Lie algebras

2007 ◽  
Vol 5 ◽  
pp. 195-200
Author(s):  
A.V. Zhiber ◽  
O.S. Kostrigina
Keyword(s):  
Dynamical System ◽  
Dynamical Systems ◽  
Lie Algebra ◽  
Lie Algebras ◽  
Second Order ◽  
System Of Equations ◽  
Two Dimensional ◽  
Finite Dimensional ◽  
Dimensional Dynamical System

In the paper it is shown that the two-dimensional dynamical system of equations is Darboux integrable if and only if its characteristic Lie algebra is finite-dimensional. The class of systems having a full set of fist and second order integrals is described.

scholarly journals Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4719-4728
Author(s):  
Tao Deng ◽  
Shasha Li ◽  
Yuning Li ◽  
Yang Zhang ◽  
Jingye Sun ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Three Dimensional ◽  
Polarized Light ◽  
Optical Field ◽  
Two Dimensional ◽  
Polarization Ratio ◽  
Two Dimensional Materials

AbstractThe molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.

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