研究目的
Enhancing the parameters of photonic crystal fibers infiltrated with a modified 6CHBT doped with gold nanoparticles to widen the working temperature range and improve thermal and electro-optical properties.
研究成果
The introduction of 5BCHBN admixture increased the working temperature range of AuNP doped PLCFs and enhanced the effect of NPs on LC. Doping with AuNPs reduced threshold voltages and rise times, while the 5BCHBN admixture decreased fall times. The use of a specially designed four microelectrode setup further improved the measurement setup.
研究不足
The decrease of the N–I phase transition temperature with increasing AuNP concentration may narrow the working temperature range of devices based on NP-doped PLCFs. The surface functionalization of AuNPs with dodecanethiol may not be well coupled with the LC matrix, affecting the ordering of LC molecules.
1：Experimental Design and Method Selection:
The study involved modifying 6CHBT nematic LC with 5BCHBN and doping it with AuNPs to enhance thermal and electro-optical properties.
2：Sample Selection and Data Sources:
Samples included microcapillaries and photonic crystal fibers infiltrated with the modified LC and AuNP composites.
3：List of Experimental Equipment and Materials:
Equipment included a LinkamTHM6000 heating stage, Nikon Eclipse Ts2R microscope, MIKROPAK HL-2000 halogen lamp, Ocean Optics Flame-S spectrometer, RIGOL DG4062 function generator, FLC Electronics A800DI voltage amplifier, Newport Power Meter 2936-C, and Velleman PCSU1000 oscilloscope. Materials included 6CHBT LC, 5BCHBN, AuNPs, and PCF LMA-10 fibers.
4：Experimental Procedures and Operational Workflow:
The process involved thermal and electro-optical tuning of the composites, measurement of N–I phase transition temperatures, and analysis of threshold voltages and switching times.
5：Data Analysis Methods:
Data was analyzed using numerical simulations with Comsol Multiphysics software and experimental measurements.
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Ocean Optics Flame-S spectrometer
Flame-S
Ocean Optics
Collection and analysis of output light from the fiber.
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LinkamTHM6000 heating stage
THM6000
Linkam
Precise temperature control for thermal tuning of samples.
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Nikon Eclipse Ts2R microscope
Eclipse Ts2R
Nikon
Microscopic observation of samples under crossed polarizers.
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MIKROPAK HL-2000 halogen lamp
HL-2000
MIKROPAK
Light source for injecting light into the fiber.
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RIGOL DG4062 function generator
DG4062
RIGOL
Generation of electrical signals for electro-optical tuning.
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FLC Electronics A800DI voltage amplifier
A800DI
FLC Electronics
Amplification of voltage for electro-optical tuning.
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Newport Power Meter 2936-C
2936-C
Newport
Measurement of output signal intensity.
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Velleman PCSU1000 oscilloscope
PCSU1000
Velleman
Visualization and analysis of electrical signals.
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Comsol Multiphysics software
Comsol
Numerical simulation of electric field distribution.
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