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1,449 results on '"Liu, Shilin"'

166. 26‐3: Room Temperature Bias‐Selectable, Dual‐Band Ultraviolet/Infrared Detectors Based on PTAA/MAPbCl3Single Crystal film Heterojunction

Author

Liu, Shilin, Din, Yijing, and Li, Qing

Abstract

A single photodetector capable of switching its peak spectral photoresponse between two wavelength bands is highly useful, particularly for the ultraviolet‐infrared bands in applications such as remote sensing, object identification, and chemical sensing. However, it is difficult to realize dual‐frequency ultraviolet/infrared detection with the existing technology. In this study, we leverage the advantages of perovskites materials to demonstrate a bias‐selectable ultraviolet/infrared dual‐band detector that operates at room temperature by using CH3NH3PbCl3(MAPbCl3) single ctystal film and poly(triaryl amine). By switching between zero and forward bias, this detectors switch peak photosensitive ranges between the ultraviolet and infrared bands with room temperature detectivities of 4.5 × 1012and 1.65 × 10 9cm Hz 1/2W −1, respectively. Unlike conventional bias‐selectable detectors, which utilize a set of back‐to‐back photodiodes, we demonstrate that under zero/forward bias conditions the device's operation mode instead changes between photovoltaic effect and photoconductive effect / the radiant thermal effect, allowing additional functionalities that the conventional structure cannot provide.

Published
2024
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168. Vibrational mode-specific polarization effect in circularly polarized stimulated Raman scattering.

Author

Li, Yuhui, Li, Tao, Yu, Yuanqin, Sun, Jin, Zhou, Xiaoguo, Zhang, Rui, and Liu, Shilin

Subjects
STIMULATED Raman scattering, LASER pumping, LINEAR polarization, RAMAN lasers, RAMAN scattering, CIRCULAR polarization, COHERENT scattering
Abstract

As one of the popular coherent Raman scattering techniques, stimulated Raman scattering (SRS) has made significant progress in recent years, especially in label-free biological imaging. Polarization provides an additional degree of freedom to manipulate the SRS process. In previous studies, only linearly polarized SRS was fully investigated, in which both pump and Stokes laser fields are linearly polarized. Here, we theoretically analyzed the SRS process excited by two circularly polarized laser fields and then experimentally demonstrated it by taking a spherical symmetric CH4 molecule as a model system. The experimental results are in good agreement with the theoretical ones. It is shown that circularly polarized SRS (CP-SRS) has unique characteristics different from linear polarization. When the handedness of circular polarization states of two laser fields is the same, CP-SRS further suppresses the depolarized vibrational band while keeping the polarized band almost unaffected. On the other hand, when the handedness is opposite, CP-SRS enhances the depolarized band while suppressing the polarized band. Therefore, the CP-SRS not only allows us to resolve the symmetry of vibrational modes but also can enhance vibrational contrast based on symmetry selectivity by suppressing or enhancing the signal from a specific vibrational mode. These results will have potential applications in improving chemical selectivity and imaging contrast as well as spectral resolution SRS microscopy. In addition, the CP-SRS has the ability to determine the depolarization ratio ρ and identify the overlapping Raman bands. [ABSTRACT FROM AUTHOR]

Published
2022
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169. Stability and Bioaccessibility of Quercetin-Enriched Pickering Emulsion Gels Stabilized by Cellulose Nanocrystals Extracted from Rice Bran.

Author

Wang, Guozhen, Li, Jin, Yan, Xiaoqin, Meng, Yan, Zhang, Yanpeng, Chang, Xianhui, Cai, Jie, Liu, Shilin, and Ding, Wenping

Subjects
RICE bran, CELLULOSE nanocrystals, EMULSIONS, STRUCTURAL stability, OXIDANT status, QUERCETIN
Abstract

To investigate the optimal delivery system of quercetin, in this paper, cellulose nanocrystals (CNCs) extracted from rice bran were used to stabilize the Pickering emulsion and Pickering emulsion gels (PEGs) with quercetin. To compare the emulsion properties, stability, antioxidation activity, encapsulation rate, and bioaccessibility of the quercetin, four emulsions of CNC Pickering emulsion (C), CNC Pickering emulsion with quercetin (CQ), CNC Pickering gel emulsion (CG), and CNC Pickering gel emulsions with quercetin (CQG) were prepared. All four emulsions exhibited elastic gel network structure and good stability. The quercetin significantly reduced the particle size, increased the stability, and improved the antioxidant capacity of CQ and CQG. Compared to C and CG, the ABTS+ radical scavenging capacities of CQ and CQG were respectively enhanced by 46.92% and 3.59%. In addition, CQG had a higher encapsulation rate at 94.57% and higher bioaccessibility (16.17) compared to CQ. This study not only indicated that CNC from rice bran could be exploited as an excellent stabilization particle for Pickering emulsions, but also provided a highly stable and bioaccessible delivery system for water-insoluble functional active factors. [ABSTRACT FROM AUTHOR]

Published
2024
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170. Sensitive Thermography via Sensing Visible Photons Detected from the Manipulation of the Trap State in MAPbX3

Author

Xu, Yubing, primary, Wang, Xin, additional, Liu, Shilin, additional, Pan, Yuzhu, additional, Perveen, Abida, additional, Onwudiwe, Damian Chinedu, additional, Fayemi, Omolola Esther, additional, Elemike, Elias Emeka, additional, Bae, Byung Seong, additional, Zhu, Ying, additional, Talaighil, Razika Zair, additional, Zhang, Xiaobing, additional, Chen, Jing, additional, Zhao, Zhiwei, additional, Li, Qing, additional, Lei, Wei, additional, and Xu, Xiaobao, additional

Published
2023
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175. High Gain Derived from Facile Carrier Dynamics Manipulation for Sensitive X‐ray Detection and Imaging

Author

Liu, Shilin, primary, Ding, Yijing, additional, Wang, Xin, additional, Li, Yuwei, additional, Chen, Jing, additional, Zhao, Zhiwei, additional, Zhu, Zhuoya, additional, Wu, Jun, additional, Fayemi, Omolola Esther, additional, Bae, Byung Seong, additional, Zhu, Ying, additional, Lei, Wei, additional, Xu, Xiaobao, additional, and Li, Qing, additional

Published
2023
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178. Music therapy on depression in college students

Author

Xu, Qiujian, primary, Lee, Kyungmi, additional, Yang, Dan, additional, Wang, Xiaoyu, additional, Liu, Shilin, additional, Ren, Xiubo, additional, Wang, Shidan, additional, Li, Chengshuai, additional, and Xu, Ying, additional

Published
2023
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