Wenxiang Liu

Sep 13, 2023 | opg.optica.org | Wenxiang Liu |Ruoyu ZHANG |Aijun Zhang |Shuyu Chen

We report on the development of a two-beveled-fiber polarized (TBFP) fiber-optic Raman probe coupled with a ball lens for in vivo superficial epithelial Raman measurements in endoscopy. The two-beveled fibers positioned symmetrically along a ball lens, in synergy with paired parallel-polarized polarizers integrated between the fibers and the ball lens, maximize the Raman signal excitation and collection from the superficial epithelium where gastrointestinal (GI) precancer arises.

Apr 10, 2023 | mdpi.com | Wenxiang Liu |Xiaohua Deng |Shen Han |Xi Chen

1. IntroductionThe process and mechanism of gold mineralization are the frontiers of gold deposit research and are essential for understanding the genesis of the deposits and establishing the mineralization models [1,2,3,4,5]. Pyrite is the most common gold-bearing sulfide and is also an important host to a range of trace elements such as Au, Ag, Cu, Pb, Zn, Co, Ni, As, Sb, Se, and Te, which are useful indicators for ore genesis and physico-chemical conditions [6,7,8,9,10,11,12,13,14].