1,721,137 research outputs found
Soliton-Kink interaction in a generalized nonlinear Schroedinger system
No full textThe interactions between the solitons and kinks in a nonintegrable system are studied within the context of the generic cubic-quintic nonlinear Schrödinger equation, in which the bright soliton, dark soliton, kink and anti-kink solutions have been known. The structures have interesting relations with each other: they can coexist, and the kinks (and anti-kinks) play a role of domain walls dividing the space into self-focusing and self-defocusing regions. Numerical analysis shows that the bright (dark) solitons can be transformed into the dark (b) ones upon collisions with the kinks, directly showing the reciprocity between the two classes of solitons
Application of optical fiber sensors to structural health monitoring of composite structures
No full text
Distortion analysis in an omnidirectional image sensing system for assembly (OISSA)
No full textProceedings of the 1997 IEEE International Symposium on Assembly and Task Planning, Marina del Rey, CA - August 199
Multicolor emissive carbon dot with solvatochromic behavior across the entire visible spectrum
No full textCarbon dots (CDs) are a new class in carbonaceous family and have instigated remarkable research interests over the past decade both from fundamental and technological point of view due to its astonishing photoluminescence (PL) property, though the underlying PL mechanisms for CD are strongly disputed. Herein, we have synthesized nitrogen functionalized CDs (N-CDs) utilizing a facile and onestep hydrothermal approach. The synthesized CDs exhibit excellent solubility in a series of organic solvents and we have extensively investigated the CD-solvent interactions to understand the solvatochromic behavior of CDs which have hardly been studied. Our CDs show excitation wavelength and solvent dependent PL across nearly the entire visible spectrum without compromising the PL quantum yield (CD shows high quantum yield for both blue and red region in some selected solvents). The origin and spectral shift of PL property in different solvents are also thoroughly studied. These observations suggest that the hydrogen bonding between N-CDs and protic solvents is the primary driving force in controlling the PL in the system whereas both dipolar interaction and hydrogen bond acceptance basicity (beta) of aprotic. solvents are to be counted for the irregular PL behavior of CDs. Interestingly, the CD-polymer solutions also provide better quantum yield compare to the bare CD which suggests that by monitoring the interaction between CD and polymer in different solvents we can tune the PL property of CD which can find potential applications in diverse fields. (C) 2019 Elsevier Ltd. All rights reserved.11Nsciescopu
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