Article
Chemistry, Analytical
Kuan-Yu Lin, Cheng-Sheng Liang, Cheng-Che Hsu, Shuei-Liong Lin, Yi-Ting Chen, Fong-Shung Huang, Shang-Lin Wang, Jyh-Shing Jang, Yen-Wen Lu
Summary: An optoelectronic system is presented for online measuring concentrations of uric acid and beta 2-microglobulin in dialysates. The system shows good correlations and online monitoring capability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Environmental Sciences
Guimei Dong, Xiaotong Li, Renjie Yang, Yanrong Yang, Haixue Liu, Nan Wu
Summary: Soil moisture has a significant impact on the fluorescence intensity of PAHs, and a correction method using NIR diffuse reflectance spectroscopy can reduce this influence and improve the accuracy of PAHs detection. The combination of fluorescence and NIR diffuse reflectance spectroscopy shows promise for the detection of PAHs in soil.
ENVIRONMENTAL POLLUTION
(2021)
Article
Physics, Applied
Bingbing Wang, Yulu Chen, Wulin Tong, Yangzhou Zhou, Jiajia Tao, Zewen Wang, Zuoru Dong, Hong Zhou, Zhanglong Fu, DiXiang Shao, Xiaodong Wang, Juncheng Cao
Summary: This study presents a novel blocked-impurity-band hybrid structure for terahertz radiation detection. The modulation effect of sub-wavelength metal grating on light absorption is analyzed, and the optical absorption and spectral response of the hybrid structure detectors are simulated. The results show selective absorption amplification and filtering effects, as well as significant absorption enhancement at specific wavelengths.
APPLIED PHYSICS LETTERS
(2022)
Article
Spectroscopy
Changlin Su, Li Han, Hongle An, Wensheng Cai, Xueguang Shao
Summary: Investigating the structures of water on metal oxides is helpful for understanding the mechanism of the ad-sorptions in the presence of water. Diffuse reflectance near-infrared spectroscopy (DR-NIRS) was used to study the structures of adsorbed water molecules on anatase TiO2 (101). The study found that the spectral features of adsorbed water can be observed at different sites on the TiO2 surface, and there is a clear correlation between the intensity of the adsorbed water peaks and the adsorbed quantity of ATP.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Environmental Sciences
Cleber Nunes Kraus, Daniel Andrade Maciel, Marie Paule Bonnet, Evlyn Marcia Leao de Moraes Novo
Summary: This research investigated the use of multispectral vertical diffuse attenuation coefficient of downward irradiance (K-d) gradients in accessing phytoplankton genera. The results suggest that phytoplankton genera are organized based on their ability to use light intensity and different spectral ranges of visible light, with changes in light availability seasonally impacting phytoplankton structure. The study provides valuable insights into describing phytoplankton communities in tropical freshwater floodplains using orbital data, and the approach can be used to assess phytoplankton diversity in these environments.
Article
Multidisciplinary Sciences
Saeed Samaei, Piotr Sawosz, Michal Kacprzak, Zanna Pastuszak, Dawid Borycki, Adam Liebert
Summary: Time-domain diffuse correlation spectroscopy (TD-DCS) allows for noninvasive blood flow measurement and accurate quantification of TOF-resolved blood flow in human tissues. The new approach detects depth-dependent reactive hyperemia and separates superficial from deep blood flow, showing potential benefits for neuroimaging sensing applications.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Xianqiang Meng, Gen K. K. Li, Xiaoyong Long, Shilei Li, Junfeng Ji
Summary: A new method for measuring soil goethite/hematite ratios is presented, which utilizes the band position of electron pair transition (EPT) in diffuse reflectance spectra processed by continuum removal. The method is validated and shown to effectively eliminate the matrix effect. Application of the method to loess-paleosol sequences confirms its potential for improving the measurement of goethite/hematite ratios in sediments.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Giles Blaney, Ryan Donaldson, Samee Mushtak, Han Nguyen, Lydia Vignale, Cristianne Fernandez, Thao Pham, Angelo Sassaroli, Sergio Fantini
Summary: The study describes the design and validation of an instrument for dual-slope broadband diffuse reflectance spectroscopy, demonstrating its capability to accurately identify spectral features and measure absolute absorption. The instrumental methods presented can be used in quantitative spectroscopy of optically diffusive media, especially in near-infrared spectroscopy of biological tissue.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Ceramics
Shanqi Xu, Jie Zhang, Yin Zhang, Wei Zhu, Anping Wang, Shuxian Zhuang
Summary: A novel, eco-friendly yellow mixed oxide inorganic pigment composed of Bi2O3-ZnO-CaO was successfully synthesized using a solid-state reaction. The pigment showed light yellow color and was rare earth-free, with good chemical stability. It exhibited superior near-infrared solar reflectance and thermal insulation performance, making it suitable for energy-saving applications in building coatings.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Zhuopin Xu, Weimin Cheng, Shuang Fan, Jie Liu, Haiping Wang, Xiaohong Li, Binmei Liu, Yuejin Wu, Pengfei Zhang, Qi Wang
Summary: The research used NIR spectroscopic analysis and data fusion method to improve the accuracy of rice flour composition analysis. The results showed that the best prediction accuracy could be achieved through data fusion of NIRr-NIRt (1 der), outperforming models using NIRr and NIRt separately.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Applied
Emilie Chalmin, Bernard Schmitt, Claire Chanteraud, Aurelie Chassin de Kergommeaux, Faycal Soufi, Helene Salomon
Summary: Although red is the main color used in prehistoric paintings, there is a wide variety of red coloring matter in prehistory, which may have undergone various preparations, mixtures, or alterations. Using spectro-radiometry, it is possible to distinguish different coloring materials based on their spectral signature and understand the relationship with their mineral composition.
COLOR RESEARCH AND APPLICATION
(2021)
Article
Energy & Fuels
Yueying Li, Yan Ma, Wenyuan Liu, Zhoufu Wang, Hao Liu, Xitang Wang, Hengyong Wei, Shenghao Zeng, Nian Yi, Gary J. Cheng
Summary: Colored non-toxic near-infrared (NIR) reflective and infrared radiative pigments, such as yttrium ferrite (YFeO3), with controllable crystalline structures were successfully synthesized in this study. The effects of crystalline and microstructural properties on the optical performance of YFeO3 pigments were investigated for the first time. Different crystalline forms of YFeO3 particles exhibited distinct optical absorption and reflection properties, highlighting their potential for energy-saving applications.
Article
Food Science & Technology
Shuang Fan, Chaoqi Qin, Zhuopin Xu, Qi Wang, Yang Yang, Xiaoyu Ni, Weimin Cheng, Pengfei Zhang, Yue Zhan, Liangzhi Tao, Yuejin Wu
Summary: The study aimed to establish a rapid and accurate method using near-infrared spectroscopy (NIRS) to quantify cellulose content in the bran layer for selecting rice varieties with lower cellulose content. The potassium dichromate oxidation (PDO) method was improved to ensure accuracy. Spectral analysis models were established using NIRdr spectra, NIRdt spectra, and fusion spectra, with the fusion model outperforming the NIRdt model, which outperformed the NIRdr model.
Article
Chemistry, Analytical
Pedro Escarate, Gonzalo Farias, Paulina Naranjo, Juan Pablo Zoffoli
Summary: This article introduces a method for fruit maturity inspection based on VIS-NIR spectroscopy, using CNN and FNN neural network models to classify fruits and estimate SS content, achieving high accuracy and correlation coefficients.
Article
Materials Science, Multidisciplinary
Filiz Keles, Hye-Won Seo
Summary: The depth dependent UV-light absorption profile of GaN nanorods with different lattice arrays and filling factors was studied using finite-difference time-domain (FDTD) methods. By comparing to the results from LambertBeer's law with Maxwell-Garnett effective medium theory, we identified the quantitative contribution from nano-scattering effect on the light absorption in the nanorod arrays. The FDTD study of graphical 3D profile of light absorption and electric field intensity was parallelly conducted to investigate the origin of the nano scattering.
CURRENT APPLIED PHYSICS
(2021)