Liquid-core optical waveguide dosimetry. An experimental study of a simple measurement system with LED and photodiode

Abstract The results of experimental study of pressure variations inside core box during resin bonded sand filling process are reported. The test core specimens were produced using Laempe® Test Specimen Curing Machine L 1. A special pressure measurement system was designed and built with safety and portability requirements of the foundry environment. Special experiments were conducted to establish the effect of sand deposition on vent permeability.

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A Liquid-core Liquid-cladding Optical Waveguide Based on Thermal Gradients across the Laminar Flow of Water in Capillary Tubing

Analytical Sciences ◽

10.2116/analsci.18n015 ◽

2019 ◽

Vol 35 (2) ◽

pp. 215-218

Author(s):

Manami NAKAMURA ◽

Hiroyasu MURATA ◽

Kiichi SATO ◽

Kin-ichi TSUNODA

Keyword(s):

Laminar Flow ◽

Optical Waveguide ◽

Liquid Core ◽

Thermal Gradients ◽

Capillary Tubing

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Construction of the measurement system and its experimental study for diagnosing cerebral functional disorders using eye-sensing HMD

Proceedings of the 41st SICE Annual Conference. SICE 2002. ◽

10.1109/sice.2002.1195366 ◽

2003 ◽

Author(s):

H. Ishii ◽

Y. Okada ◽

H. Shimoda ◽

H. Yoshikawa

Keyword(s):

Experimental Study ◽

Measurement System ◽

Functional Disorders

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Liquid-core liquid-cladding optical waveguide by liquid dielectrophoresis

TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference ◽

10.1109/sensor.2009.5285616 ◽

2009 ◽

Cited By ~ 1

Author(s):

Chia-Chi Chien ◽

Shih-Kang Fan

Keyword(s):

Optical Waveguide ◽

Liquid Core ◽

Liquid Dielectrophoresis

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Experimental study of a low-thrust measurement system for thruster ground tests

Review of Scientific Instruments ◽

10.1063/1.4866657 ◽

2014 ◽

Vol 85 (3) ◽

pp. 035102 ◽

Cited By ~ 3

Author(s):

Jingsong Gong ◽

Lingyun Hou ◽

Wenhua Zhao

Keyword(s):

Experimental Study ◽

Measurement System ◽

Low Thrust ◽

Thrust Measurement

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3F2 Development of Simple Measurement System for Ankle Motion Analysis

The Proceedings of Conference of Kyushu Branch ◽

10.1299/jsmekyushu.2014._3f2-1_ ◽

2014 ◽

Vol 2014 (0) ◽

pp. _3F2-1_-_3F2-2_

Author(s):

Ryohei KAI ◽

Isao ABE ◽

Takehito KIKUCHI ◽

Sosuke TANIDA

Keyword(s):

Motion Analysis ◽

Measurement System ◽

Ankle Motion ◽

Simple Measurement

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Focusing and Defocusing Effects in a Single Liquid-Core/Liquid-Clad Optical Waveguide: An Optical Coupler

ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2 ◽

10.1115/icnmm2011-58006 ◽

2011 ◽

Author(s):

Seyed Reza Mahmoudi

Keyword(s):

Boundary Layer ◽

Mass Flow Rate ◽

Optical Waveguide ◽

Mass Flow ◽

Flow Rate ◽

Wall Temperature ◽

Thermal Boundary Layer ◽

Flow Direction ◽

Liquid Core ◽

Optical Coupler

A single-liquid-core/liquid-clad L2 optical waveguide/coupler is studied numerically. The device consists of a large aspect ratio-microchannel isothermally heated on its both parallel flat walls. Steady state laminar Poiseuille flow of cold water which is introduced to the heated-microchannel forms a stable thermal boundary layer adjacent to the isothermal heated walls. Thermal boundary layer development causes the lateral refractive index gradient across the channel which is required for waveguiding. At a particular mass flow rate for a given wall temperature, the waveguiding occurs. Since the thermal boundary layer, cladding region, is actively tunable through varying both surface temperature and mass flow rate, The waveguiding effect along the channel is highly configurable. We demonstrated that the excitation in the flow direction leads to defocusing of the beam at fundamental TE mode. By reversing the flow direction, the Counter-flow excitation of the waveguide also results in focusing effects. The current waveguide can be exploited as an integrated optical coupler at specific channel wall temperature and mass flow rate.

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