Session Index

A wide-angle, wideband, and polarization-insensitive metamaterial (MM) absorber
was studied based on the theoretical concept of uniaxial perfect matching layer (UPML) in
terahertz range. The MM absorber was designed as a multi-layered anisotropic array structure
consisting of a conductive VIA-rod, a bi-layered slot-FSS, and a split-ring resonator (SRR).


 

As a gold nanostructure is irradiated by a circularly polarized light, the winding behaviors of the streamlines of the real part of Poynting vector and orbital momentum density are observed. This phenomenon implies that the orbital angular momentum is induced by the spin-orbit interaction of photons via the plasmonic nanostructure.

 

Multi-microchannel fiber-optic plasmonic immunoassay sensor system for the simultaneous detection of samples. The system requires only 30 μL of sample for detection. Results show that the multi-microchannel sensor system not only has good reproducibility, but excellent refractive index resolution (~10-6 RIU) and detection limits are ~10-8 g/mL for antibody.

 

We report on an attached guard ring design for a planar In0.53Ga0.47As/InP separate absorption, grading, charge and multiplication (SAGCM) avalanche photodiode by using a TCAD simulation. To suppress the edge breakdown, the double Zn diffusion process is used to form guard ring attached to the active region of the devices.

 

Size uniformity of silver nanoparticles photoreduced on the ferroelectric template is enhanced by the self-assembled film. The increase in the number of nanoparticles of suitable sizes for the localized surface plasmon resonance facilitates to increase the hotspot density. The produced SERS substrate possesses the 6.15-fold enhancement of Raman peak intensity.

 

Non-contact position measurement plays an important role for autonomous cars. In this work, we propose a 3D position sensing method based on the inherent chromatic nature of metalens. By analyzing the color coordinate of the chromatic images, we experimentally demonstrate a position measurement with a centi-meter-resolution measurement result.

 

We use the transfer printing technique to integrate 1D photonic crystal nanobeam lasers onto SiO2 substrate and SiNx waveguide respectively, as well as characterizing their lasing properties before and after transferring. This technique provides an efficient and precise way for heterogeneous integration between III-V semiconductor-based light sources and silicon-based circuits.

 

We simulated a polarized incident light passed through the panel via FDTD analysis. We calculated the required spatial phase profile at specific position via placing a monitor behind the panel. Thus, we designed our metasurfaces by corresponding the phase shift to the opposite required spatial phase profile.

 

In this study, the rapid thermal annealing process at 450 °C was adopted for reducing the epitaxial defects and improving the photoluminescence properties of the InAs/InSb/AlSb type II supperlattice structures.

 

Cesium lead bromide nanocrystals (CsPbBr3 NCs) chelating diphenylammonium bromide (DPABr) were prepared via low temperature method with enhanced luminescent and electrical properties. The maximum brightness and current efficiency of the optimized light emitting device based on DPABr-modified CsPbBr3 NCs were enhanced 2.3- and 3.3-fold, respectively, relative to the pristine one

 

A semiconducting single-walled carbon nanotube (SWCNT) FET was prepared using the simple technique of selective separation. The Raman spectrum of the transistor revealed that the m-SWCNTs and regioregular poly (3-dodecylthiophene) were completely removed, leaving only s-SWCNTs. The FET exhibited a high on/off ratio with a selective separation of 107.

 

The lifetime of a group of nanobubbles induced by the irradiance of nanosecond pulsed laser in gold colloid was measured. Via a probing-laser detection system, the signal of a group of the cavitation of nanobubbles, which is owing to the plasmonic heating of gold nanoparticles, can be measured.

 

The optical trapping of a two-dimensional gold nano-array on a freestanding polystyrene bead irradiated by a linearly polarized Gaussian beam is studied. The optical force field of the NP shows the difference between the front side and the back side of the gold nano-array w.r.t. the plane of incidence.


 

The characteristics of laser-induced microbubble in gold nanorod (GNR) colloid is studied. It’s due to the optical breakdown vaporized surrounding medium. According to the features of these signals, we can divide the microbubbles into three types: a single bubble, coalesced bubble and split bubble.

 

A periodic metallic-dielectric nanorod array which consists of Si nanorods coated with Ag film is fabricated and characterized. The fabrication procedure is performed by using nanosphere lithography with reactive ion etching and followed by Ag thin film deposition. The proposed substrates provide a practical plasmonic nanorod-based sensing platform.

 

In this study, the multiple buffer layers process is used to enhance the optoelectronic properties of ultra thin Gallium-doped ZnO (GZO) film. Different multiple buffer layers of 0, 1, 2, 3, 4 were chosen, and the intermittent time between for each buffer layer was fixed at 10 min.

 

Triple-microdisk lasers are fabricated on InGaAs QD wafer to investigate the PT-symmetry. At the low temperature (80K), an obvious laser output at =1107nm of whispering-gallery mode m=1,13 is observed by pumping only one of the triple-microdisk.

 

This work designs a multimode interference (MMI) based waveguide crossings that is using a Ta2O5 as a waveguide materials. Such a designed device has a low insertion loss of -20.28 dB and small size of 15.1 x 15.1 µm2. The feasibility of cascading multiple MMI waveguide crossings is also confirmed.

 

We developed transmission multi-spectral system with stagger slits to let a small CMOS sensor cover all the spectral range. Use this system, we tested surface plasmon resonance (SPR) responses in gold nanoslit arrays under different glucose solution. The results show that the system can be used for the SPR measurement.

 

By integrating large-area monolayer MoS2 with the 2D PhC SiNx slab, we couple light emission from MoS2 with the photonic band-edge mode in PhC SiNx slab. In experiments, we obtain over 23 times photoluminescence intensity than that of the MoS2 on a sapphire substrate.

 

The power-dependent photoluminescence and time-resolved photoluminescence were measured to investigate the charge carrier recombination rate of CsPbBr3 micro-hemispheres in the temperature range from 298K to 320K. Rate equation was used to calculate monomolecular and bimolecular recombination rate.

 

In this work, the semiconductor ZnO were successfully used with plasmonic metal Ag nanoparticles for fabricating the hybridization of SERS(Surface Enhanced Raman Scattering). The aluminium glass was the substrate that we chose to be the base of SERS chip (Al@AgNPs) for monitoring DPY contaminant in water solution.

 

We report on mid-infrared (MIR) GeSn vertical-cavity light-emitting diodes grown on silicon-on-insulator platform. Room-temperature electroluminescence with clear Fabry-Perot modes in the MIR region was demonstrated. These results pave the way for efficient on-chip light sources for MIR electronic-photonic integrated circuits.

 

This study reports liquid crystal (LC) photo-alignment of methyl-red (MR) adsorption based on the dynamic structures of azo-dyes and polymers-doped LCs. The dynamic structures of Williams domain can be initiated by applying suitable external voltages, and the doped MRs are simultaneously illuminated with green light to generate specific LC structures.

 

We demonstrate the fabrication of large-scale and periodic nanostructures using a combination method of Nanospherical-Lens Lithography (NLL) and Hole-Mask Lithography (HML). The subsequent material evaporation at various deposition angles will result in various types of nanodisk oligomers. The proposed method is ideal for industrialization of future nanophotonic applications.

 

We numerically investigate a highly sensitive and tunable plasmonic refractive index sensor composed of a metal-insulator-metal waveguide with a side-coupled nanoring, containing silver nanorods using the finite element method. Results show a sensitivity of 2080 nm/RIU with a figure of merit and a quality factor of 29.92 and 29.67, respectively.

 

In this study, a short-wavelength infrared photodetector with a type-II InAs/InSb/AlSb superlattice p-i-n structure was prepared on an n-GaSb substrate. The photoluminescence wavelength of the detector was found at 2.8 um (77K), and the dark current density was measured as 5.8 × 10-10 A/cm2 under a bias of -0.05 V.

 

In this study, an InAs sub-monolayer was sandwiched in an InGaAs(Sb)/GaAsSb double-well structure to enhance the crystal quality and optical properties. The photoluminescence intensity of the QDs improved significantly compared to the reference GaAs capped QD structure when antimony was incorporated into the InGaAsSb inner quantum well.

 

The main purpose of this study which is we used a Serrated Interdigitated Electrode (SIE) to distinguish cancer cells.Four cancer cells with different sites, CE81T, OE21, A549, and TSGH8301.Different numbers of cancer cell samples are placed on the electrodes in sub-μL volume to detect cancer cells by photoelectrochemical measurement.

 

A giant photoresponsivity and high specific detectivity are exhibited by a device fabricated by exfoliating HSS of nano-thickness. The photoresponsivity of this photodetector is significantly larger than those fabricated with other existing Hf-based chalcogenides. The layered multi-elemental 2D chalcogenide hold great promise for future wearable electronics and integrated optoelectronic circuits.

 

In this study, the optimum distribution of a straight CuO nanorod structure inserted in Al-doped ZnO thin film is achieved; it has a minimum resistance of 1.25 × 10−3 Ω · cm, and the average transmittance in the range 400–800 nm is about 82%, which is good for touch sensor.