Session Index

S1. Nanophotonic Materials and Devices

Nanophotonic Materials and Devices V
Sunday, Dec. 4, 2022  09:00-10:45
Presider: Tsung-Sheng Kao、Hsin-Chieh Yu
Room: B1 A003
09:00 - 09:15
Manuscript ID.  0825
Paper No.  2022-SUN-S0105-O001
Sanskruti Swain Photo-responsive oxidase-like nanozyme based sensor for assessment of total antioxidant capacity from human saliva
Sanskruti Swain, Ting-Yi Lin, Hua-En Chueh, National Central University, Taiwan (Taiwan); I-Hsuan Chou, Hsing-Ying Lin, National Tsing Hua University (Taiwan); Chen-Han Huang, National Central University, Taiwan (Taiwan)

Uncontrolled generation of free radicals in the human body leads to oxidative stress-related disorders. Total antioxidant capacity evaluation in body fluids represents an important biomarker of oxidative stress. Herein, we prepared fluorescent AuNCs stabilized by BSA and explored its photo-responsive oxidase-mimetic ability to detect antioxidants in human saliva and cancer cell lines. Upon visible light irradiation BSA-AuNCs generated free radicals which oxidized non-fluorescent thiamine to fluorescent thiochrome but in the presence of antioxidants, fluorescence quenching was observed. Finally, a portable microfluidic sensor was developed for onsite evaluation of antioxidants from human saliva.

  Preview abstract
09:15 - 09:30
Manuscript ID.  0156
Paper No.  2022-SUN-S0105-O002
Yi-Hsiang Shih Low-Resistivity Amorphous Carbon/Cu Hybrid Structures
Yi-Hsiang Shih, National Cheng Kung University (Taiwan)

In the study, we propose a fabrication strategy to construct low-resistivity amorphous carbon/Cu hybrid electrodes for advanced applications of next-generation devices. Amorphous carbon is deposited using atmospheric pressure chemical vapor deposition (APCVD) at a low temperature of 400℃. It is demonstrated that the resistance of amorphous carbon/Cu hybrid electrodes is 2.139 (Ω/m2), which is better than that of the pure copper 3.38 (Ω/m2).

  Preview abstract
09:30 - 09:45
Manuscript ID.  0728
Paper No.  2022-SUN-S0105-O003
Ching-Hsun Hsu Integrated reflective hyperspectral microscopy with self-fabricated Large Area transceiver
Ching-Hsun Hsu, Tsung-Han Wu, Shang-Hua Yang, Hai-Tian Liu, National Tsing Hua University (Taiwan)

We integrated our self-designed and fabricated THz Large Area transceiver with the hyperspectral system. To demonstrate the results, we observed a spot size of approximately 4 mm and a broadband image of 0.4 to 1.0 THz by using the knife edge method. Our setup can resolve patterns of different sizes at better than 5mm resolution, and in collaboration with the ChiMei Museum, we have scanned images with excellent resolution, which has great potential for real-time terahertz hyperspectral microscopy applications in artwork conservation.

  Preview abstract
09:45 - 10:00
Manuscript ID.  0145
Paper No.  2022-SUN-S0105-O004
Radhika Bansal Ridge waveguide based GeSn Light emitting diode
Radhika Bansal, Guo-En Chang, National Chung Cheng University (Taiwan)

We report on 2µm wavelength band operating GeSn waveguide light emitting diode. Room temperature electroluminescence in the 2µm operating region is clearly demonstrated. These results open the avenue for integration of proposed GeSn LED with other photonics devices to realize full integrated Si photonics chip.

  Preview abstract
10:00 - 10:15
Manuscript ID.  0319
Paper No.  2022-SUN-S0105-O005
Po-Cheng Yang Dielectric Metagrating Based on Gradient-based Optimization
Po-Cheng Yang, Yao-Wei Huang, National Yang Ming Chiao Tung University (Taiwan)

Metasurface grating, as known as metagrating, promote the efficiency of diffraction optics by ultrathin and subwavelength building block. However, forward design finds the limitation to optimize maximum efficiency with the best sets of nanopillars. In this study, we numerically demonstrate a metagrating which effectively deflects the light to the 1st order diffraction by using inverse design and gradient-based optimization method. The maximum efficiency of our metagrating achieves up to 81%. With some iterations, the efficiency can be optimized to a high value without pre-build phase library of meta-atom. This framework can be extended to design high efficiency multifunctionality metasurface.

  Preview abstract
10:15 - 10:30
Manuscript ID.  0407
Paper No.  2022-SUN-S0105-O006
YUAN-HSIU LIU Nanoimprint Lithography for All-dielectric Geometric Phase Metasurface
YUAN-HSIU LIU, YEN-CHUN CHEN, CHIH-MING WANG, National Central University (Taiwan)

Nanoimprint lithography is a method of fabricating nanoscale patterns. Imprint resists are typically monomeric or polymeric formulations that are cured by heat or UV light during the imprinting process. In this paper, we demonstrated nanoimprint lithography in geometric phase metalens. A simpler and more compact design was achieved by using the NIL equipment, the photoresist with 100 nm critical dimension metalens pattern was imprinted on the substrate by hot embossing and UV nanoimprint, respectively. Finally, we transfer metalens pattern with 1.515 refractive index on the silica substrate and then measure the distance of focus point.

  Preview abstract
10:30 - 10:45
Manuscript ID.  0739
Paper No.  2022-SUN-S0105-O007
Li-Ming Chiang Optical and morphology modulation of two-dimensional layered lead iodide perovskites via organic cation doping
Li-Ming Chiang, Tsung-Sheng Kao, Yi-Ling Hsieh, National Yang Ming Chiao Tung University (Taiwan)

We analyzed the composition of two-dimensional layered halide perovskites. Under different annealing and solvent conditions, crystals with different morphologies will be produced, and dimethylformamide(DMF) has better film-forming properties. By internally doping methylamine cations, we observed a red-shift and emission of multiple wavelengths in photoluminescence spectra with increasing doping ratio. In X-ray diffraction spectra, the shift of the diffraction peak shows that it is not a single pure phase perovskite.

  Preview abstract