Session Index

Nanophotonic Materials and Devices

Poster Session II
Thursday, Dec. 7, 2017  15:30-17:00
Presider: -
Room: International Research Building 5F
Paper No.  2017-THU-P0102-P001
ChengYen Chien Award Candidate Effects of dislocation reduction on AlGaN/GaN using ELOG technology
ChengYen Chien;JunHuei Lin;ChienTsun Chan;WeiYang Wang;YaoHong You;RayMing Lin Lin;ChiehHsiung Kuan

We primarily use ELOG technology to epitaxy high-quality GaN by MOCVD. We confirm that ELOG technology really enhance the epitaxy quality by EPD wet etching method, and achieve different dislocation density on GaN by way of designing mask patterns. HEMTs was improved performance by the high-quality GaN.

Paper No.  2017-THU-P0102-P002
Sheng-Jia Yu Award Candidate Fabrication of high aspect ratio silicon nanopillar arrays by metal assisted chemical etching
Sheng-Jia Yu;Chun-Hung Lin

In this study, we report on a cost-effective, simple and anisotropic etching approach to fabricate high aspect ratio silicon nanopillar arrays using UV nanoimprint lithography and metal assisted chemical etching. The influences of etching time and diameter are distinctly exhibited in this experiment.

Paper No.  2017-THU-P0102-P003
Jhen-Hong Yang Award Candidate Fano-like resonance in hybridization of high-refractive-index dielectric nanoparticles and gold nanoantennas
Jhen-Hong Yang;Kuo-Ping Chen

The absorption was enhanced by nearly a factor of four when the whispering gallery mode coupled to localized surface plasmon resonance. The absorption was suppressed when the magnetic dipole resonance was coupled to the localized surface plasmon resonance. The absorption could be enhanced or suppressed depending on the illumination direction.

Paper No.  2017-THU-P0102-P004
Ta-Hsin Tseng Award Candidate Stacking of on-chip photovoltaic cells in standard foundry Bi-CMOS process
Ta-Hsin Tseng;Hsiu-Wei Su;Chen-Han Lu;Yu-Ching Cheng;Yung-Jr Hung

Deep dielectric trenches in standard foundry BiCMOS process are utilized to achieve electrical isolation among on-chip photovoltaic (PV) cells in a close-packed manner. We successfully demonstrate a lifted open-circuit voltage of 1.04 V by connecting two on-chip PV cells in series as a proof-of-concept without requiring any in-foundry process modification.

Paper No.  2017-THU-P0102-P005
Jyun-Cong Lai Dynamic scattering based on ions-doped cholesteric liquid crystals
Wen-Fa Cheng;Cheng-Kai Liu;Jyun-Cong Lai;Hsiu-Ming Kuo;Chao-Hsuan Wu;Chung K. Lai;Ko-Ting Cheng

This study reports the electro-optical properties of bistable scattering mode light shutters, including driving voltage, driving frequency, response time, and variations of LC structure, based on ions-doped liquid crystals. With flexible substrate, such light shutters are suitable for the applications of e-paper.

Paper No.  2017-THU-P0102-P006
Yu-Chen Tsai Detection of Gold Nanoparticles Using Imaging Spectroscopic System
Yu-Chen Tsai;Wan-Shao Tsai

Spectral characteristics of gold nanoparticles with three different diameters 10, 50, and 70 nm were detected simultaneously using an imaging spectroscopic system based on a transmission-mode dark-field microscope and a Michelson interferometer. The measured plasmonic resonance spectra were compared with theoretical calculation, and both demonstrate the size-dependent spectral characteristics.

Paper No.  2017-THU-P0102-P007
Jia-Jin Lin Formation of continuously-chirped graphene oxide gratings by Lloyd’s interferometer with a convex mirror
Jia-Jin Lin;Tzu-Chieh Kao;Chia-Wei Kao;Chuan-Ci Yin;Yung-Jr Hung

Continuously-chirped gratings with a wide range of grating period are realized by a Lloyd’s interferometer equipped with a convex mirror. After transferring chirped grating pattern onto a thin graphene oxide film, the resulting ~20-nm-thick graphene oxide chirped gratings provide varying periods from 320 to 620 nm.

Paper No.  2017-THU-P0102-P008
Chien-Tsung Hou Electrically Tunable Large Three Dimensional Monocrystalline Blue Phase Photonic Crystal
Chien-Tsung Hou;Chun-Wei Chen;Cheng-Chang Li;Hung-Chang Jau;Chun-Ta Wang;Ching-Lang Hong;Duan-Yi Guo;Cheng-Yu Wang;Shen-Ping Chiang;Timothy J. Bunning;Iam-Choon Khoo;Tsung-Hsien Lin

We report the development of massive-sized monocrystalline three-dimensional photonic crystals by controlling the self-assembly processes which occur in blue phase liquid crystal. The tunable polymer stabilized single crystals with dimensions of ~1 cm exhibit extraordinarily sharp photonic bandgaps with high reflectivity, long-range periodicity in all dimensions and well-defined lattice orientation.

Paper No.  2017-THU-P0102-P009
Chun-Ron Chang Utilization of WO3 Nanorod Arrays as the Electron Transport Layer for Fabricating Hybrid Light-Emitting Devices
Chun-Kai Chang;Chun-Ron Chang;Sheng-Hsiung Yang;Apolline Puaud;Thien-Phap Nguyen

We demonstrate novel inverted light-emitting devices based on n-typed tungsten trioxide (WO3) nanostructures and polyethylenimine ethoxylated (PEIE) buffer layer. The best device based on WO3 nanorod arrays with height of 300 nm showed a max brightness of 3,079 cd/m2 and current efficiency of 0.22 cd/A.

Paper No.  2017-THU-P0102-P010
Sheng-Siang Huang Preparation and characterization of tungsten trioxide (WO3) thin films as the MEMS-type NOX gas sensors
Sheng-Siang Huang;Yu-Zung Chiou;Chun-Kai Wang;Shoou-Jinn Chang;Ting-Jen Hsueh;Sheng-Po Chang;Shih-Mao Lin

Tungsten trioxide (WO3) thin films as the MEMS-type NOx gas sensors were prepared by RF Sputter. The results of SEM images indicated that the grain sizes were increased with increasing the annealing temperature.

Paper No.  2017-THU-P0102-P011
Hai-Pang Chiang Employing Star-Shaped Gold/Silver Nanoparticles to Surface-Enhanced Raman Scattering (SERS) Substrate with Near Infrared Excitation
Chih-Hsien Lai;Guo-An Wang;Chung Wei Lee;Tzyy-Jiann Wang;Chih-Ching Huang;Hai-Pang Chiang

We report the usage of star-shaped gold/silver nanoparticles (NPs) to the surface-enhanced Raman scattering (SERS) substrate for near infrared studies. Under the 1064-nm excitation, the substrate with star-shaped NPs exhibits a Raman intensity 3.4 times stronger than that of the substrate with silver NPs.

Paper No.  2017-THU-P0102-P012
Dhruv Tyagi A Magnetically-Excited Plasmonic Metasurface for Multi-Directional Beam Steering
Dhruv Tyagi;C. B. Huang

In this work, we numerically present a plasmonic metasurface designed to achieve multi-directional routing into the far field. The metasurface is excited by a magnetic dipole with controlled polarizations, and upto seven distinct beam steering angles with high uni-directionality are obtained.

Paper No.  2017-THU-P0102-P013
Kuan-Chin Che Passive mode-locked ytterbium-doped fiber laser in all normal dispersion by graphene oxide
Kuan-Chin Che

We demonstrated the passively mode-locked ytterbium-doped fiber laser based on graphene oxide (GO)/polymer film. GO/polymer film was produced by ultrasonic vibration of GO powder and then mixed with polymer. With 24 mW pump power, the stabilized 23.2 MHz repetition rate mode-locked pulses with the characteristic of dissipative soliton was generated.

Paper No.  2017-THU-P0102-P014
Ren Jie Lin Giant SHG signal with vertical split ring resonators
Ren Jie Lin;Wei-Yi Tsai;Pin Chieh Wu;Hui-Hsin Hsiao;Jia-Wern Chen;Tsung Lin Chung;Greg Sun;Din Ping Tsai

We present a vertical split ring resonator (VSRR) based metamaterial to generate SHG. The second-harmonic generation of VSRR are dramatically increased several orders comparing with that of planar SRR. This work paves a new way in increasing the nonlinear efficiency and provides a new insight in designing new nonlinear sources.