We introduced a novel negative multiple pulse poling (NMP) method for uniform device fabrication of quasi-phase matching using an in-situ visualization system. Diffraction pattern analysis showed the duty ratio of 0.4...
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作者：
Seong Yoon LimJunhyoung AhnJoon Seok LeeMin-Gon KimChan Beum ParkDepartment of Materials Science and Engineering
Korea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 305-701 Korea Biomonitoring Research Center
Korea Research Institute of Bioscience and Biotechnology (KRIBB) 125 Science Road Daejeon 305-806 Korea Advanced Photonics Research Institute
Graduate Program of Photonics and Applied Physics Gwangju Institute of Science and Technology Gwangju 500-712 Korea Chan Beum Park
Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology (KAIST) 335 Science Road Daejeon 305-701 Korea. Min-Gon Kim
Advanced Photonics Research Institute Graduate Program of Photonics and Applied Physics Gwangju Institute of Science and Technology Gwangju 500-712 Korea
This work demonstrates a method to develop high temperature metal-semiconductor-metal photodetectors using low-temperature, ion beam assisted deposition of nanocrystalline silicon carbide (SiC) and hydrothermal synthe...
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This work demonstrates a method to develop high temperature metal-semiconductor-metal photodetectors using low-temperature, ion beam assisted deposition of nanocrystalline silicon carbide (SiC) and hydrothermal synthesis of zinc oxide (ZnO) nanorod arrays. Due to incorporation of ZnO nanorod arrays, the photo-to-dark current ratio of Au/nanocrystalline SiC is increased from 4.9 to 13.3 at 25°C and from 4.85 to 7.57 at 200°C. The results, suggest that the ZnO nanorod arrays could serve as an antireflection layers to guide more light into the SiC photodetectors. These preliminary results support the integration of nanocrystalline SiC and ZnO nanorod arrays for use in high temperature photo-detection applications.
We present a systematic study of photonic band gaps (PBGs) in three-dimensional (3D) photonic amorphous structures (PASs) with short-range order. From calculations of the density of optical states (DOS) for PASs with ...
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We present a systematic study of photonic band gaps (PBGs) in three-dimensional (3D) photonic amorphous structures (PASs) with short-range order. From calculations of the density of optical states (DOS) for PASs with different topologies, we find that tetrahedrally connected dielectric networks produce the largest isotropic PBGs. Local uniformity and tetrahedral order are essential to the formation of PBGs in PASs, in addition to short-range geometric order. This work demonstrates that it is possible to create broad, isotropic PBGs for vector light fields in 3D PASs without long-range order.
In this paper, we review various LTPS backplane technologies based on laser-crystallization and other related methods that have been applied to AMLCD and AMOLED displays. The TFT performances obtained by different mel...
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ISBN:
(纸本)9781618390967
In this paper, we review various LTPS backplane technologies based on laser-crystallization and other related methods that have been applied to AMLCD and AMOLED displays. The TFT performances obtained by different melt-mediated crystallization methods with excimer laser and solid phase crystallization will be compared. The technical issues of the image quality and the resolution will be discussed.
We have demonstrated direct measurement of the time-dependent terahertz (THz) magnetic near-field of split-ring resonators (SRRs) by using Terahertz Time-Domain Spectroscopy (THz-TDS). We also show that the local magn...
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We have demonstrated direct measurement of the time-dependent terahertz (THz) magnetic near-field of split-ring resonators (SRRs) by using Terahertz Time-Domain Spectroscopy (THz-TDS). We also show that the local magnetic field in these structures is strongly enhanced relative to the THz magnetic field incident on these structures.
Biological Inspiration for the design of flapping wing vehicles has been the source of numerous design efforts in the field of Micro Aerial Vehicle (MAV) development. For flapping flight in small birds and insects, hi...
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Biological Inspiration for the design of flapping wing vehicles has been the source of numerous design efforts in the field of Micro Aerial Vehicle (MAV) development. For flapping flight in small birds and insects, high lift generation is typically a result of unsteady fluid flow phenomena. Our previous studies have conceptualized and demonstrated how a dragonfly inspired Quad-Winged Vehicle (QV) can produce higher energy efficiency and increase payload capacity on-board an MAV. The objective of this paper is to further improve on the in-flight aerodynamic efficiency of MAVs and propose improved flapping configuration and kinematics of a light weight wing to enhance lift and aerodynamic efficiency during hovering flight. This paper presents a series of experimental and computational results in the form of performance plots comparing the effects of wing orientation, flapping kinematics: frequency / amplitude and wing feathering, all of which influence the lift and drag generated by the MAV.
Self-assembled magnetic colloidal suspensions are sought after by material scientists owing to its huge application potential. The biomedical applications of colloidal nanoparticles necessitate that they are biocompat...
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We performed coherent backscattering experiments to measure transport mean free path in closely packed biomimetic structures. Due to short-range order and near-field effect, low-order light scatterings become dominant...
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Fatigue crack initiation is shown to be associated with the stress-assisted evolution of a surface silica layer that forms during the normal exposure of unpassivated polysilicon surfaces to lab air In-situ atomic forc...
Fatigue crack initiation is shown to be associated with the stress-assisted evolution of a surface silica layer that forms during the normal exposure of unpassivated polysilicon surfaces to lab air In-situ atomic force microscopy (AFM) techniques are used to reveal the evolution of overall surface topology during incremental cyclic deformation to failure. Linear perturbation analysis of stress-assisted dissolution is then utilized to predict the evolution of the surface morphology. The predictions from the perturbation analysis are shown to be consistent with measured surface morphologies obtained using AFM techniques.
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