Paper Title:
A Liquid Optical Tip via Control of Flow Rate
  Abstract

Efficient energy interconversion between light propagation and the localized field of light is important for highly-sensitive biological and chemical detectors. Solid optical tip can effectively enhance optical intensity for the measurement of nanoscale single molecule imaging. However, it lacks dynamic control mechanisms and is difficult to realize a smooth interface which may result in serious loss of scattering. Liquid can be dynamically controlled and the interfaces are optically smooth. Recently, liquid waveguides are reported to exhibit various advantages of dynamic, cheap and low optical loss. In this paper, a liquid optical tip in a microchannel controlled by flow rates is reported. In the design of the optofluidic chip, the core flow stream of the liquid waveguide is formed as Calcium Chloride (CaCl2) flow stream, and the cladding flow stream is formed as dioionzed (DI) water flow stream. The diffusion of CaCl2 between the microfluidic laminar flows establishes a gradient refractive index distribution to make an optical tip. For the optical system, laser source with central wavelength of 633 nm is used as input. The microchannel has a height of 80 µm and a width of 100 µm. The diffusion coefficient is 1 × 10-9 m2/s. The original refractive index of CaCl2 solution and deinized (DI) water are 1.442 and 1.332, respectively. The optical intensity at the optical tip is increased by 15 times sing Finite-Difference Time-Domain (FDTD) method. Thus, light be guided to form a sharp optical tip through the control of liquid. The on-chip optical tip has potential applications in biological, chemical and medical solution detectors.

  Info
Periodical
Edited by
Selin Teo, A. Q. Liu, H. Li and B. Tarik
Pages
331-334
DOI
10.4028/www.scientific.net/AMR.74.331
Citation
Y. Yang, A. Q. Liu, "A Liquid Optical Tip via Control of Flow Rate", Advanced Materials Research, Vol. 74, pp. 331-334, 2009
Online since
June 2009
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chin Ming Chung, Ching Huei Lin, Che Wei Lin
Session 1: Materials for Environmental Protection and Energy Application
Abstract:A multiple physical finite elements to analyze software (COMSOL Multiphysics) is employed to investigate serpentine flow channels of a small...
261
Authors: Jun Ping Yao, Zhong Sun
Chapter 1: Material Science and Engineering
Abstract:The flow of the molten slag pool determines the temperature distribution and the pool profiles in the electroslag casting process, which...
250
Authors: Hong Zhou, Li Heng Luo
Chapter 4: Material Science and Technology
Abstract:In order to explore whether the step gating system played a role in lost foam casting (LFC) process, this paper simulated the mold filling...
940