Si-integrated lanthanide-doped ferroelectrics for a photomemory based on a photochromic reaction

W Chen, H Chen, J Shen, X Du, J Guo, T Bian… - Optics Letters, 2023 - opg.optica.org
We describe a Si-integrated photochromic photomemory based on lanthanide-doped
ferroelectric Na_0. 5Bi_2. 5Nb_2O_9: Er^ 3+(NBN: Er) thin films. We show that …

Tunable laser photoluminescence and excitation spectroscopy for gemstone analysis

TH Tsai, Z Wang - Novel Optical Systems, Methods, and …, 2024 - spiedigitallibrary.org
Fluorescence appears in most gemstones when exposed to specific irradiation, playing a
crucial role in mineral identification and color treatments detection. Traditional visual …

Photochromic gemstone analysis using in situ absorption spectroscopy

TH Tsai, UFS D'Haenens-Johansson… - Novel Optical Systems …, 2023 - spiedigitallibrary.org
Photochromic gemstones exhibit optically controllable coloration at ambient temperatures,
strongly affecting their visual appearance and potential market value. As a result, a …

Nano scattering particle: an approach to improve quality of the commercial led

NDQ Anh - Tạp chí Khoa học và Công nghệ-Đại học Đà Nẵng, 2024 - jst-ud.vn
Tóm tắt Đèn LED đã và đang trở thành một giải pháp chiếu sáng bền vững trong ngành
chiếu sáng. Tuy nhiên, đèn LED thương mại có hiệu suất hiển thị màu sắc thấp. Bài báo này …

[HTML][HTML] An Update on Sapphires with Unstable Color

AC Palke, SF McClure, NR Renfro - gia.edu
Figure 1. A padparadscha sapphire (3.54 ct) submitted to the GIA laboratory increased its
orange color during the color stability test. If left in the dark for an extended period of time …