Session Index

Optical dispersion results from the index of refraction of a material varying with the frequency of incident light. Accurate control over this property is vital. For example, it mitigates pulse spreading in optical fibers, which are the backbone of modern telecommunications, and enables pulse compression in ultrafast laser optics (2018 Nobel Prize in Physics). In this talk, I will begin with an introduction to the design, simulation, and fabrication of metasurface components with a focus on metalenses. Subsequently, I will illustrate how to control metasurface dispersion by customizing the group delay and group delay dispersion of constituent nanostructures. Such dispersion-engineered metasurfaces enable achromatic metalenses, aberration-corrected spectrometers, as well as lens-aberration correctors designed for simple singlets to complicated microscope objectives. My talk will be summarized by detailing on-going works involving metasurface-enabled superachromatic and broadband high-efficiency lenses and pointing out future emerging applications. These demonstrations are vastly applicable to machine vision, autonomous vehicles, optical communication, augmented and virtual reality devices, and more.

 

Investigated the performance of N-side up thin-epilayer, AlGaInP based vertical micro light-emitting diodes (VLEDs) with different chip sizes on composite metal (copper/Invar/copper; CIC) substrate were fabricated. The obtained data suggested that μ-LEDs with CIC substrate could be extended instead of conventional vertical electrodes for thin-film micro LEDs applications

 

GaN-based photodiode embedded with porous-AlGaN distributed Bragg reflectors was demonstrated. High refractive index n+-AlGaN:Si epitaxial layers were transformed into low refractive index porous-AlGaN layers in the n+-AlGaN/n-AlGaN:Si stack structure through electrochemical etching process. Photocurrent and efficiency of GaN photodiode with porous DBR structure was increased due to light recycling process.

 

A complementary metal-oxide-semiconductor (CMOS)-compatible active antenna based on embedded inverse deep trench (EIDT) nickel silicide (NiSi) film based antenna structure, is demonstrated.These EIDT NiSi antennas take advantage of intrinsic loss of NiSi film, surface plasmon resonance phenomenon and three-dimensional cavity effect to provide efficient and polarization-insensitive absorption at telecommunication wavelengths.

 

This study investigated the use of collagen materials to fabricate resistive-switching memory devices with ITO/Collagen/Al structure. The devices demonstrated decent operation characteristics including ON/OFF ration >10^3,data retention time exceeded 10^4 seconds, SET/RESET voltage of -0.92V and 0.5V, respectively, and switching cycles of about 168 times.

 

We present our recent progress in developing three dimensional metamaterials which are fabricated by a simple stress-driven self-assembly method. The desired optical properties of 3D metamaterials are demonstrated by varying the 2D pattern sizes and arrangement. We also summarize the capabilities to manufacture advanced optical components at TIRI.

 

Two-dimensional information of tool wear can only be extracted by a single camera. In this work phase shifting method is used to reconstruct the end face of milling cutters. The main idea is to establish a milling cutter monitoring system and improve the resolution of system to achieve industrial requirement.

 

In manufacturing industry, tool wear condition is an important factor which affects the precision and yield of product. The traditional assessment of tool wear depends on subjective consciousness and lacks quantitative standards. This research aims to develop an automatic optical inspection system to reconstruct the wear information for milling tool.

 

An outdoor-laser-pest-control system with intelligent depth imaging has been developed via structured lighting of infrared. Structured lighting is high-resolution in depth information, but there are errors under sunlight and in reflective objects. Therefore, we go through parameters reconfiguration and filtering, then significantly reduce the interference of the sun.

 

Morlet wavelet transform with Fizeau interferometer were used to measure the surface contour of transparent glass and thin films. The surface contour of glass plates and zirconium nitride thin films were reconstructed. The noise comes from rear surface of thin films and substrate can be removed by the proposed method.

 

In this study, we developed a deep learning model based on convolutional neural network (CNN) to inspect the fabric surface anomaly. Proposed compact CNN model can achieve 90% classification accuracy and defect segmentation. With advantage of fast and effective, the model has potential to be applied in real-time surface inspection.

 

This paper focuses on how a visual inertial odometry (VIO) fused by extended Kalman filter (EKF) estimates accurately the instantaneous center of rotation (ICR) of tracked vehicle. Employing a modified ICR-based kinematic model has resulted in better pose estimation for skid-steer movement than previous one.

 

We show that the concept of combining thin film interference and magnetic dipole resonance to develop a surface enhanced infrared absorption (SEIRA) substrate with a large-area electric field hot zone. The substrate use optical constructive interference and magnetic dipole resonance of silicon particles to achieve strong electromagnetic enhancement effect.

 

Blue phase liquid crystal is a kind of 3D photonic crystal. In this experiment, we fabricate a free standing monocrystalline BPLC film which can be designed for having the PBG across the entire visible spectrum. In addition, we can replaced different material into a BP template by the replacement technique.

 

A flux mapping methodology for simulating film thickness distribution in E-beam evaporation with ion assisted deposition process to optimize correction mask of three mateials is presented in this paper.The thickness uniformities of the films are 0.88% for TiO2 film, 1.38% for Ta2O5 film, and 2.44% for SnO2 film, respectively.

 

Periodic nanostructures on Au-based thin-film metallic glasses with different crystallinities were fabricated in the present study for surface-enhanced Raman scattering applications. To achieve this, amorphous films were deposited using co-sputtering and thermal imprinting was adopted to emboss the as-deposited films. The imprinted films were then heat treated for different crystallinities.

 

The polycrystalline elemental 2D material germanene is formed after the post-growth annealing of amorphous germanium deposited by using the thermal evaporation on MoS2/sapphire substrates. With oxidized germanene as the passivation layer, top-gate germanene transistors are fabricated, which have revealed a possible solution of the ultra-thin 2D materials for device applications.

 

In this thesis, we tried to make ultra-thin III-V sensor by using indium phosphide epitaxial wafer by thermo-compression bonding. The device could detect signal in the light source proved by input square wave. Quantum dot could also enhance the performance of sensor.

 

Upgraded the optical system from the FORMOSAT-5 satellite, the clear aperture of the 550mm aspherical primary of a Korsch telescope is regarded as a higher quality optical remote sensing satellite in the next decade. This paper addresses the development of a null corrector for use to examine the primary mirror.

 

Pipe-AlGaN layers with anisotropic optical properties were formed from n+-AlGaN:Si layers. Central wavelengths of the polarized reflectance spectra were measured when the direction of the linear polarizer was perpendicular and parallel to the pipe structure and the thermal expanded property on the porous AlGaN layers.

 

In this study, we design and fabricate a micro-resonator "cat-flap" suspended in an optical cavity as a negative dispersion filter with sub-millimeter scale micromirrors supported by nanometer-thickness flexures. Our goal is to use the ANSYS simulation to optimize the cat-flap and develop fabrication process to increase the quality factor.

 

The transparent VO2 nanoparticle film (Tlum = 93.3%) with the excellent solar modulation (ΔTsol = 6.1%) was successfully fabricated on the quartz substrate which improves the drawback of the VO2 film with brownish-yellow color. Its thermochromic property is expected to be a promising material for smart window applications.

 

A novel silicon surface passivation technique using supercritical CO2 fluid with oxidant (H2O2) is proposed. The treated double-sided Si surfaces were further passivated by depositing a thin n-type poly-Si layer using VHF-PECVD system. The carrier lifetime of the silicon surface after the passivation of the poly-Si/SiOx stack is 1.23 ms.

 

The transparent conductive ZnO/Ag/ZnO multilayers were deposited on flexible PI substrate by HiPIMS in low temperature without additional heating. An excellent transparent in visible wavelength and lowest resistivity were obtained in 88% and 5.5x10-5 Ωcm, respectively. The performance of vertical LED was compared before and after bonding using the multilayers.

 

All-inorganic perovskite has been widely used in various fields such as light emitting diode, solar cells, and memory devices. In this work, the resistive switching memory with a structure of ITO/CsPbBr3/Au showed typical bipolar resistive switching characteristic with high ON/OFF ratio (>103) , large repeat cycle(>200).

 

Lossy mode resonance effect combined with D-shaped multimode fiber was used to fabricate a temperature and humidity fiber sensor. The sensitivity of the temperature sensor is 1.2 nm/°C in the range of 30 to 60°C. The relative humidity sensitivity is 1.0 nm/RH% in the relative range of RH30% to RH60%.

 

The polymer luminescent materials Poly(9-vinylcarbazole) are doped in quantum dot light emitting diode which let the excess electrons form excitons with the injected holes from the hole transport layer, and the performance is enhanced by Förster resonance energy transfer. The maximum of luminance and efficiency reached to 69055cd/m2 and 6.5cd/A.

 

In this work, we present that by moderating AIZTO TFTs by annealing at different temperatures and annealing time, the electrical performance enhanced. Annealing with oxygen gas atmosphere could eliminate the oxygen vacancy in the channel and suppress the leakage current phenomenon. These advantages allow it to develop next-generation display.

 

We proposed a soil moisture sensor using fiber side-polishing and RF magnetron sputtering techniques. Tin oxide film was coated on the D-shaped multi-mode fibers to make a high sensitivity fiber sensor. Lossy mode resonance effect was used to detect the soil moisture. The sensitivity of 2.15 nm/RH% was achieved.

 

In this work, the metal-oxide TFT (thin-film transistor) biosensor integrated with a microfluidic channel was developed to investigate biochemical reaction kinetics. Using the malate-aspartate shuttle as an example, we established the correlation between the molecular diffusion behaviors in the microfluidic channel and the TFT current responses.

 

The authors report the deposition of an (AlxGa1-x)2O3 amorphous thin film on sapphire substrates by sputter deposition. An amorphous deep UV (Al0.12Ga0.88)2O3 photodetector, with a cutoff wavelength at 230 nm, was also fabricated.

 

Obliquely bideposition was used to deposit silver nano-zigzag arrays with different sizes. When the nano-zigzag array was illuminated with electromagnetic wave, electrical field was enhanced around the corners of the zigzag. The hot spots are found to support the SERS signals in measurement.

 

A highly reliable encapsulation method was developed for flexible Micro LED. The technology implemented on flexible TEG was loaded on testing module with a folding radius of 5 mm.

 

A birefringent polymer transducer was used for the hydrochloric acid concentration measurements in a common path heterodyne interferometer. The achievable measurement resolutions of RI and concentration are 6.94×10-6 RIU and 16.7 ppm, respectively.

 

In this work, glancing angle deposition was applied to deposit an ultra-thin nanoparticle array on a Bragg mirror. The transmission spectrum shows that the Tamm plasmon wave was excited at a wavelength of 578 nm. It is demonstrated that a surface wave has been excited underneath the nanoparticles.

 

We investigate the effect of thermal annealing on the structural and electrical properties of 80-nm-thick Bismuth (Bi) thin films with grains. The thermal process brings Bi thin film greater magnetoresistance ratio (MR) and carrier mobilities due to improved material crystallinity.

 

Aluminum oxynitride films were prepared by high power impulse magnetron sputtering and deep oscillation magnetron sputtering. The influence of processes on crystalline structures, optical properties and surface roughness of films were investigated by spectroscopic elliposmeter and UV-VIS-NIR spectrometer.

 

Thermochromic VO2 and W-VO2 films were prepared by HiPIMS with substrate temperature at 300 °C. The transition temperature of VO2 and W-VO2 films were 68 °C and 46 °C, respectively. The thermochromic properties and optical constants of VO2 and W-VO2 were analyzed by spectrometer and ellipsometer.

 

We have studied the color discriminations of human test experiments before and after wearing a notch filter, which has a 20 nm full-width at half maximum (FWHM), 8.5% low transmittance at the reference wavelength of 580 nm.

 

Anti-glare coatings for electronic device screens with low sparkle were prepared via the sol-gel process using spray methods. Simulation was used to predict the influence of the surface morphology on the sparkle value. The sparkle value was optimized at the appropriate diameter.

 

In terms of 3-D scanning, the most difficult thing to overcome is to scan metal objects. High Dynamic Range (HDR) is a suitable way to solve this problem. The main purpose of this paper is to optimize HDR by automatically calculation of the best exposure time.

 

We present a simple proprietary purification system for the synthesis of high-quality perovskite CsPbBr3 quantum dots with high photoluminescence quantum yield by introducing purification solvents, that is, ethyl acetate, ethyl acetate:hexane, acetone, acetone:hexane into a crude solution. Optimal material and light characteristics were exhibited with the ethyl acetate:hexane purification solvent.

 

The time response behavior of low-temperature polycrystalline silicon (LTPS) thin-film transistors (TFTs) to the X-ray irradiation pulse with different frequencies is analyzed. The formulas for excited and recovering behaviors are proposed to be possibly used for the circuit performance in real situation. The predicted and measured results fit fairly well.

 

A hydrogen-bonded polymer cholesteric liquid crystal (PCLC) is proposed as a metal sensor. Calcium ion makes the crosslinking degree of the PCLC increase and then causes the PCLC pitch shrink and its reflected wavelength blue-shift. The sensing performance is studied by measuring the wavelength shift induced by metal ion.

 

In this study, the leaf-structures are patterned onto thin-film LSCs using inorganic phosphor .It is found that the efficiencies of thin film LSCs covered with replica layers of Bauhinia and Epipremnum aureum are higher than the one with flat encapsulation layer.

 

Nowadays, the applications of nanostructure have increased. Because of the characteristics of the stable chemical structure and photoelectric properties, TiO2 are often used in our life. In this study, TiO2 nanostructures were prepared by hydrothermal method and the non-enzymatic glucose sensor has high sensitivity (37.31𝜇A𝑐𝑚−2/m𝑀).

 

Nickel oxide (NiO) was used as an auxiliary color-changing layer for an all-solid-state ITO/WO3/Li-NbO3/NiO/ITO device deposited with magnetron sputtering. NiO film was deposited at different oxygen flow rates from 4-10 sccm. When the oxygen flow rate is 4 sccm, the optical modulation at a wavelength of 550 nm is 53.4%.

 

We report a flexible capacitive pressure sensor based on a porous dielectric film of polydimethylsiloxane for wide-range pressure sensing. A 2-propanol aqueous solution is employed as the porogen for the formation of porous microstructures with controlled size. Improved pressure sensing performance and the capability for different stimuli are discussed.

 

To meet the missions of earth observation in the next decade, optical remote sensing systems require totally 8 optical satellites. Among these, more than 24 lightweight spaceborne mirrors will be fabricated on schedule. This paper reports the development in automation for the rapid, cost-effective, and high quality light-weighted processing process.

 

Fused silica was patterned by a continuous CO2 laser with an energy density of 0.24 J/mm2, presenting agglomerated nanoparticles of <100 nm in the groove of around 20 μm deep and 153 μm wide. Chemical analysis indicated the removal of silicon-related impurities in laser processing, inducing more purified silica surface.

 

The results of experimental ITO/TNO double layers, the thickness combination with 70/30 nm has the lowest the average reflectance, which was reduced by 2.3% and the experimental result showed the same trend with the simulated results.

 

Plasma-assisted atomic layer deposition was used in this experiment. The antireflection (AR) film was coated on the plastic substrate to test the adhesion and film crack. The optimized parameters were found for coating on the curved-surface micro lens. The reflectivity and uniformity of each point were measured by optical microscope.

 

We demonstrate the fabrication of a Si based metal insulator semiconductor (MIS) photo-detector of the Al/TiO2/Si structure and its characteristics of photo-responsivity. White light blinded enhancement of photo responsivity around UV can be effectively achieved by simply tuning the TiO2 thickness.

 

The mid-infrared bandpass filter of SiO2(Ge/SiO2)11 multilayer films was fabricated by electron beam evaporation with ion assisted deposition. Residual thermal stress and thermal expansion coefficient of the mid-infrared bandpass filter was measured by an optical interferometer with heating temperature range of 20-100℃.

 

In this work, In-doped ZnO thin films were prepared by ultrasonic spray pyrolysis, then annealed in NH3 at temperature of 500°C for 30 minutes. The highest In-doped ZnO thin films were converted into p-type semiconductors, with the highest hole concentration of 2.4×1019 cm-3 and the lowest resistivity of 0.19 Ω-cm.

 

A high-quality AlN film was grown using DC magnetron sputtering technology with a Al intermediate film deposited pre-sputtering on a Si <111> substrate at 300 °C. We observed that the film crystal orientation was AlN<100> and the surface roughness of the aluminium-containing film was better than that without aluminium.

 

We use three smartphones to study how three features, i.e. blue light filter mode, brightness adjustment, and dark mode, affect viewing safety. Amongst, adjusting brightness is the most effective, which can increase the viewing time by 20 to 48% while adopting blue light filter mode is the least effective.

 

This work presents multilayer notch filters prepared by electron beam evaporation. The residual stress in notch filters were predicted and measured. The experimental results show that the transmittance meets the requirements, and the difference between the predicted stress value and the measured stress value is about 28 MPa.

 

This work presents the warpage and residual stress in multilayer films coated on the 8-inch silicon wafers. We use the structured-light illumination, fringe reflection technique, and sub-aperture stitching method to measure surface warpage and radius of curvature for wafers. The residual stress in multilayer thin films .

 

The (Nb2O5/SiO2)4 multi-layer film was deposited by E-gun with ion-beam assisted (IAD) on PET substrate. Residual stress was simulated by finite element method and measured by moiré interferometer. The residual stress was compressive and shearing stress was tensor, and the error of finite element simulated was less than 2%.

 

In this report, we investigated and reported a thermally crosslinkable 9,9-Bis[4-[(4-ethenylphenyl)methoxy]phenyl]-N2,N7-di-1-naphthalenyl-N2,N7-diphenyl-9H-fluorene-2,7-diamine (VB-FNPD) film used as the hole transporting layer of perovskite CsPbBr3 quantum-dot light-emitting diodes. And it show pretty good performance.

 

Here propose a method to grow an inorganic perovskite CsPbBr3 thin film on P-GaN substrate by low pressure chemical vapor deposition (LPCVD). We optimized the growth parameters by optical property of radiative. We achieve the preliminary perovskites LED structure with growing perovskite by LPCVD, ZnO layer and silver contact.

 

This research successfully developed a real-time image recognition method to count the number of birds and drive birds off, including a laser source, an algorithm for image recognition, motor control units, and solar-charged devices. The image recognition algorithm successfully counts the high-speed moving object on CCDs.

 

Diamond-Like Carbon film applied to anti-reflection film under 450 W radio-frequency power and 800W microwave power was used to coat the diamond-like carbon film for 90 minutes. The infrared transmittance in the 3~5μm band can reach 71.18%, and the hardness can reach 5.27 GPa.

 

This paper used silver power mixed with photosensitive resin and applied two photo-polymerization configurations to the 3D printing. By changing different parameters, the printing resolution and solidification could be compared It was verified that the feasibility of producing conductive components using the technology of photo-polymerization additive manufacturing.

 

From elementary school to university, font size of textbook is getting smaller, making reading harder. We found the illuminance required for reading increases with the decreases of font size, which might cause more damage to retina and more suppression of melatonin generation. Reading with blue light-less is much more friendly.

 

Epitaxial gallium oxide was grown on Al2O3 substrates with the insertion of aluminum nitride buffer layers by Hydride Vapor Phase Epitaxy. The surface morphologies and epi-film crystallinity were examined by scanning electron microscopy and X-ray diffraction. The transmission spectrum exhibited the bandgap of Ga2O3 on (001) sapphire is 4.29 eV.

 

This study is described about the application of three-dimensional interconnects circuit block printed out using the commercial FDM printer. The conductor filaments were made out of carbon-based conductive composites. The ICs and resistances were embedded in the middle of the circuit block for its lower power consumption.

 

In response to smart living environment and application fields for the future, this study using OLED displays combine a high-transparency composite electrode technology. It successfully developed 17inch AMOLED display with average transparency of 70.6% and average brightness of 483.2 nits.

 

In this article, the InGaAs-based p-i-n band-pass near-IR photodetectors (PDs) grown by metal-organic chemical vapor deposition (MOCVD) were fabricated and investigated. It was found that the PDs have a lower dark current level at 0 V, and the PDs show the characteristics of the band-pass.

 

This work will studying special pixel polarization sensor that wil calculated the incident light for pixel polarization. By using hardware detection, the pixel polarization can be calculated, and the polarization effect of the reflected light from the object can be cut off. This way can effectively eliminate glare.

 

We investigated the characteristics of IGZO thin film transistor (TFT) by mixed plasma treatment with the double-gate structure. From the result can find that the oxygen vacancy of IGZO decreases after using plasma treatment with the double-gate structure. Hence, the IGZO TFT showing excellent device characteristics and high stability.


 

Four bluelight-filtering Apps that have more than 1,000,000 downloads have been investigated. We found that App-4 to have the best protection on retina and melatonin generation. It works by effectively filtering the blue light. As to the second most effective App (App-1), it works by simply decreasing the screen brightness.

 

The high-efficiency oriented flexible transparent film heater was achieved a stable and uniform temperature after 2 minutes, the heating rate is 0.25℃/sec, the highest temperature can reach 52.6℃, and it can be found in 15 seconds from the actual measurement achieve a complete defogging effect.

 

Transparent display screens are a new development technology. These transparent display screens are used interaction system. These transparent display screens need highly protective. The highly protective structure are high hardness, high abrasion resistance, high impact resistance and high transparent.

 

This paper proposes a tunable surface profile measuring system that suitable the various object’s surface measurement. To validate the proposed approach, a coin and a plaster status were measured. The proposed method attains a high precision, high resolution, and high stability under various object’s surfaces.

 

The theoretical modeling of diffraction of electromagnetic waves with asymmetric triangular aperture and lattices shows that the center of the 0th-order diffraction spot is off-axial and frequency-dependent, and it is available to manipulate the number of diffraction orders as well as the EM-wave polarization and handedness.

 

The antireflection coatings composed of Ta2O5 and SiO2 films prepared on silicone layers by electron-beam evaporation at a substrate temperature of 200 degrees were designed and fabricated. The optical performance and properties of AR coatings, silicone layers, Ta2O5 and SiO2 films were investigated with spectrophotometer and spectroscopic ellipsometer.

 

We aim to observe the effects of two additional oxygen (O₂) plasma treatments on conventional photolithographic patterning of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), expecting to observe how O₂ plasma increases the uniformity of the patterns and how it changes the thickness and cross-sectional U-shaped profiles of the patterns.

 

In this study, MgZnO/Ga2O3 dual-band ultraviolet photodetectors with different thicknesses of SiO2 inserting layer by RF magnetron sputter system were fabricated. The optoelectrical properties of the devices were investigated. The PD with a 25-nm-thick SiO2 inserting layer demonstrated a better dual-band responsivity due to effectively blocking effect of the electron.

 

The effect of silver nitrate mist treated substrate to tin oxide film was studied by spray pyrolysis method at 350℃ and 500℃. Films with combined absorption of SnO2/Sn3O4 were characterized. The film deposited at 350℃ with treatment shows the improved visible-light photodegradation ability to RhB. The mechanism was discussed.

 

The electrical performance of Al-doped a-IZTO (AIZTO) TFTs is investigated and then SiO2 deposited by PECVD are adopted as the passivation layer. The optimized device of passivated a-AIZTO TFT exhibited mobility of 27.25 cm2/V-s, threshold voltage of -0.55 V and subthreshold swing of 0.315 V/decade.

 

We used hexamethyldisiloxane (HMDSO) to prepare the hydrophobic thin film by plasma enhanced chemical vapour deposition with different flow rates. The residual stress of the thin films deposited on BK7 glass was measured by Twyman-Green interferometer. The properties of hydrophobic thin films deposited at different flow rates was investigated experimentally.

 

Our study found that browsing smartphone in darkness is actually much safer than with the presence of background light. Taking browsing distance of 20 cm at 5.7 lux (25%), it is 5.3 times safer for retina and 1.8 times friendlier to physiology without background light than with at 56 lux.

 

In this study, the heterodyne interferometer was used to measure the glucose
concentration which is in an enzymatic modified cuvette. According to the result, proposed
method can demonstrate that the resolution of 4 mg/dl. Within the dynamic range of 1 ~ 400
mg/dl, the calibration curve exhibited the high linearity.

 

Temperature-dependent Hall measurement was used to study the electrical transport properties of bismuth thin film. Classical three-band model considering metallic surface and semiconductor bulk was applied. Result shows that the surface electron density is about 1E13 /cm2. Besides the classical transport behavior, weak antilocalization (WAL) phenomenon was observed at 3~20K.

 

Wide-direct-bandgap semiconductors have attracted much attention in optoelectronics. This work prepared CdS films by sputtering with different working pressure. The films achieved the lowest resistivity of 71.7 Ω-cm at 5 mTorr. It had high absorption in blue light region and the optimal responsivity of 6.92 A/W at 444 nm.

 

The thickness-dependent optical and mechanical properties of the 6 nm to 40 nm W films prepared by DC magnetron sputtering at a substrate temperature of 25 degrees C were investigated with spectrophotometer, spectroscopic ellipsometer, and phase-shifting Fizeau interferometer, respectively.

 

Al doped Sn𝑂2 thin film grows on c-plane sapphire using pulsed laser deposition. We changed the parameters such as substrate temperature, oxygen pressure, oxygen pressure of annealing, and time of annealing. The structural, electrical and optical properties of the samples were measured. This study used XRD, Hall measurement, penetration spectrum.

 

GZO thin films were prepared on a glass substrate by DC magnetron sputtering with H2 at various deposition temperatures, DC powers, working pressures, and H2 contents in the sputtering gas.

 

The thickness-dependent optical and mechanical properties of Mo films from 5 nm to 50 nm prepared by DC magnetron sputtering at a substrate temperature of 25 degrees C were investigated with spectrophotometer, spectroscopic ellipsometer, and phase-shifting Fizeau interferometer, respectively.

 

Owing to the shortcomings of graphitic carbon nitride, nanostructured tin (II) sulfide was sculptured via physical vapor deposition to overcome the inherent limitations of graphitic carbon nitride, such as fast charge recombination rate and narrow absorption spectrum. Here we fabricated SnS/g-C3N4 nanostructured films for photoconversion of CO2 into solar fuels.

 

In this study, we fabricated the ITO photoelectrochemical biosensors which surface of materials with P-type. We will use this component to detect and analyze the degree of carcinogenesis of Pleural effusion cell carcinoma.

 

We have developed a real-time phase-modulated ellipsometric system to determine the optical characteristics. In this work, we integrated this system with a conventional evaporation machine to monitor film thickness within dozens of nanometers of OLED material during the evaporation process.

 

In this study, we prepare Al-doped ZnO films by ultrasonic spray pyrolysis and annealed under NH3 ambient to investigate the electrical properties after annealing, Hall measurement showed that the conductivity was converted to p-type after annealed at 500°C under 700 torr NH3

 

The optical simulation is used to investigate the performance of the Fresnel solar concentrator illuminated by sun with its position in the sky at any time of day. The performance of the Fresnel solar concentrator with different distance between Fresnel lens and PV cell is also carried out.

 

Gas cluster ion beam (GCIB) with small cluster size is considered one of the methods with the advantages of both monoatomic ion beam and conventional large cluster GCIB (Ar>2000+). In this work, XPS system was equipped with a GCIB and cluster measurement kit to investigate diverse materials.

 

This experiment investigates the influence of annealing under NH3 ambient on the electrical properties of Ag-doped ZnO thin films. According to the hall measurements, Ag- doped ZnO thin films obtained higher carrier concentration after NH3 annealing. It maintained the p-type behavior and the hole concentration increased to 1.087x1017cm-3 from 2.696x1016cm-3.

 

In this study, the open loop piezoelectric actuator contains the special inertia movement and the serious movement error. This study develops the dynamics formulas, the improved scanning path, and the sufficient warming-up movement to reduce the error. From the experiment, the error reduces to 10% from 1.2%.

 

MgO-based Resistive Random Access Memory (RRAM) devices with the bottom electrode is ITO/glass substrate, and the pattern top Al electrode was investigated. It was found the resistive switching properties exhibited the bipolar behavior, in-cluded two order on/off ratio under the reading voltage 0.1V after the endurance cycles (~200).

 

The reflectivity of Bragg reflector actually changes with the incident angle of light. In this work, measured optical parameters of Nb2O5 and SiO2 deposited by e-beam evaporation were used to simulate for the optimal design parameters of omnidirectional blue light Bragg reflector. The simulator was written in MATLAB programming language.

 

This paper simulates the optimal parameters for an omnidirectional blue-light Bragg reflector design by adjusting the thickness ratio of materials of Nb2O5 and MgF2 at a fixed thickness of 1/4 wavelength for a single bilayer. Simulation results showed that the blue light at various incident angles maintained reflectance above 95%.