Photonic materials

The focus of this study is to investigate its optical and conductive properties under different conditions of doping environments, temperature and polymerization conditions. Optical characterization technique such as UV-Visible spectroscopy is developed to carry out the investigation. The developed nanofibers have been demonstrated to possess optical and conductive properties to be dependent on doping variables. Study of these optical properties could prove very useful in the development of electrochromic devices and gas sensors.

103p runthenight07 01-03-2023 7 3   Download

The research objectives of the thesis: Improve the usability and quality of LED-based lighting products. Develop a new generation of high-efficiency LED lights, evenly distributed, eliminating light pollution, and replacing existing LEDs.

27p extraenglish 24-05-2021 15 5   Download

The objectives of the thesis: Research, fabricate Er3+-doped silica glass microspheres with different sizes by arc discharge method; building an experimental system to investigate WGM mode laser emission spectrum in the optical communication wavelength region ~ 1550 nm of some fabricated microspheres.

28p extraenglish 24-05-2021 14 4   Download

The main theme of the dissertation: The dissertation targets the basic research on the physical models and new structures; calculating and simulating the bistable devices using 1D, 2D PhC structures. The effects of the PhC configuration and structural parameters on the optical characteristics and working performance of bistable devices will be investigated.

28p extraenglish 24-05-2021 22 4   Download

The objectives of the thesis: Research, fabricate Er3+-doped silica glass microspheres with different sizes by arc discharge method; building an experimental system to investigate WGM mode laser emission spectrum in the optical communication wavelength region ~ 1550 nm of some fabricated microspheres.

28p capheviahe27 23-02-2021 17 3   Download

The research objectives of the thesis: Improve the usability and quality of LED-based lighting products; develop a new generation of high-efficiency LED lights, evenly distributed, eliminating light pollution, and replacing existing LEDs.

27p capheviahe27 23-02-2021 27 3   Download

The dissertation targets the basic research on the physical models and new structures; calculating and simulating the bistable devices using 1D, 2D PhC structures. The effects of the PhC configuration and structural parameters on the optical characteristics and working performance of bistable devices will be investigated.

28p capheviahe27 23-02-2021 13 3   Download

Mechanic solicitations induced by neutron and photon interactions have to be featured for components lifespan determination. TechnicAtome is in charge of both the design and building on behalf of CEA of the 100 MW Jules Horowitz Reactor (JHR). This modular Material Testing Reactor is under construction in southern France, with radioisotope production and material testing capabilities.

8p christabelhuynh 29-05-2020 10 1   Download

The objectives of the thesis: Research and fabricate the one-dimensional (1D) – nanoporous silicon microcavity (1D-NPSMC) structures by using electrochemical etching method with the selectivity of wavelength in visible range from 200 nm to 800 nm.

28p xacxuoc4321 09-07-2019 30 5   Download

The objectives of the thesis: Research and fabricate the one-dimensional (1D) – nanoporous silicon microcavity (1D-NPSMC) structures by using electrochemical etching method with the selectivity of wavelength in visible range from 200 nm to 800 nm. The 1D-NPSMC structures has high reflectivity, narrow linewidth of the pass-band and homogeneous pores.

28p xacxuoc4321 09-07-2019 42 6   Download

Objective of the thesis: Successfully fabricate Cu2O thin film having good crystal structure. Fabricate layers protecting Cu2O electrode from photocorrosion. Study the photocatalytic, electro-photocatalytic water splitting properties of the Cu2O electrode.

29p xacxuoc4321 08-07-2019 16 6   Download

Radiating junction devices - Khi có dòng thuận qua LED hoặc IRED, các photon được bức xạ từ diode junction do tái hợp điện tử và lỗ trống tại miền chuyển tiếp (junction). - Bước sóng photon là hàm của chuyển mức năng lượng xảy ra trong quá trình tái hợp. - Đa số linh kiện LED và IRED chế tạo từ các vật liệu trên cơ sở gallium. Bảng LED materials and wavelengths Material GaP (gallium phosphide) GaP (gallium phosphide) GaAsP (gallium arsenide phosphide) GaAlAs (gallium aluminum arsenide) GaAs (gallium arsenide) wavelength (nm) 520—570 630—790 640—700 650—700 920—950) Comment s Green...

8p minhanh0246 25-09-2010 202 44   Download