Article
Materials Science, Multidisciplinary
Akane Wakabayashi, Yuji Masubuchi, Mikio Higuchi, Jumpei Ueda, Setsuhisa Tanabe
Summary: In this study, a Mn2+-doped ZnCN2 phosphor was synthesized using ammonia nitridation. The phosphor exhibited multi-wavelength luminescence, with a main emission band at 580 nm due to isolated Mn2+ ions, as well as minor emissions at 500 nm and 670 nm caused by anion vacancies and Mn-Mn pairs in the ZnCN2 crystal structure. Moreover, the intensity ratios of these luminescent bands changed with temperature, leading to a color shift from orange to yellow-green.
Article
Engineering, Electrical & Electronic
Bo Hu, Huawei Zhang, Liren He, Dongli Wang
Summary: In this study, Er3+/Yb3+-doped orthorhombic-phase BiNbO4 phosphors were synthesized and investigated as optical temperature sensors. The optimal doping concentrations were determined to be 3 mol.% Er3+ and 15 mol.% Yb3+. The material showed maximum absolute sensitivity (S-a) of 5.51‰/K at 415 K and relative sensitivity (S-r) of 3.7%/K at 150 K using the fluorescence intensity ratio technique.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Spectroscopy
Jiankun Li, Heng Dai, Yuehui Yan, Ge Zhu, Chuang Wang, Shuangyu Xin
Summary: This study successfully synthesized KBSi2O6: Bi3+, Eu3+ phosphors and investigated their phase purity structure and element distribution. The results showed that the energy transfer efficiency from Bi3+ to Eu3+ was high, suggesting that KBSi2O6: Bi3+, Eu3+ can serve as a color-tunable phosphor for optical temperature sensing.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Jia Zhang, Songsong An, Yining Zhang, Yamei Zhang
Summary: A series of novel LS:Er3+,Yb3+ luminescent materials were successfully synthesized and their upconversion luminescence properties and temperature-sensing performance were systematically investigated. The study found that the optimal Yb3+ concentration in LS:1%Er3+,xYb(3+) was x=15%, and the LS:Er3+,Yb3+ material exhibited good reversibility and repeatability.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Yingzhu Zi, Zhengwen Yang, Zan Xu, Xue Bai, Asad Ullah, Imran Khan, Asif Ali Haider, Jianbei Qiu, Zhiguo Song, Yuehui Wang, Yangke Cun
Summary: In this study, upconversion luminescence of rare earth ions in negative and positive thermal expansion hosts was investigated for temperature sensing applications. The results showed that the luminescence behavior varied with temperature, offering potential for novel temperature sensing devices using a mixed phosphor approach.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Jingzhou Song, Weiren Zhao, Hongshi Zhang, Yuan Liu, Hao Huang, Huanxin Yang, Hui Zhang, Jiyou Zhong
Summary: A series of dual-emitting phosphors NaMgBO3: Ce3+, Mn2+ were synthesized and characterized, demonstrating potential application in optical thermometry with excellent temperature sensitivity and resolution.
JOURNAL OF LUMINESCENCE
(2021)
Article
Materials Science, Ceramics
Jie Fu, Fuwen Liu, Liuyan Zhou, Renguang Ye, Degang Deng, Shiqing Xu
Summary: A series of BaGd2O4:Bi3+,Eu3+ phosphors with dual-emitting centers were prepared by high-temperature solid-state method. The phosphors exhibited broad-band emission in the blue region corresponding to transitions of Bi3+ ions and sharp red light emission corresponding to Eu3+ ions under UV excitation. The well-separated Bi3+ and Eu3+ ion emission peaks provide efficient temperature signal resolution, making BaGd2O4:Bi3+,Eu3+ phosphors an excellent non-contact optical temperature measurement material.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Yuhang Zhang, Yongze Cao, Yue Zhao, Xin Wang, Siying Ran, Long Cao, Luran Zhang, Baojiu Chen
Summary: A series of GdTaO(4)phosphors with different Er3+ doping concentrations were synthesized and studied for their upconversion luminescence properties and temperature sensing capabilities, revealing high potential for optical temperature sensing applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Qianchao Ma, Qiyun Liu, Meihua Wu, Yifei Liu, Rui Wang, Ruxian Zhou, Yanheng Xu, Haichao Wei, Ruiyu Mi, Xin Min, Lefu Mei, Zhaohui Huang, Bin Ma
Summary: In this study, Eu3+ doped La2(MoO4)3 material was synthesized via the high-temperature solid-state method. The phase composition was confirmed by XRD analysis and the microstructure was observed through SEM. The fluorescence properties of Eu3+ in the doped samples were investigated and the prepared phosphors were found to be color tunable. The results imply that Eu3+-doped La2(MoO4)3 is a promising material for high performance non-contact optical thermometers.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Abhishek Kumar, Helena Couto, Joaquim C. G. Esteves da Silva
Summary: Er3+/Yb3+doped/co-doped NaGdF4 upconversion phosphor nanoparticles were synthesized and characterized. The study demonstrated the suitability of the sample for temperature-sensing applications at a wide range of temperatures.
Article
Nanoscience & Nanotechnology
Yuanhong Cheng, Mingjian Wu, Ziyi Du, Yun Chen, Lingyi Zhao, Zhiwei Zhu, Xiaobo Yu, Yangyi Yang, Chenghui Zeng
Summary: This study successfully synthesized four new lanthanide metal-organic frameworks using a bis(trifluoromethyl)-4 ',4 ''-dicarboxytriphenylamine ligand. The single-crystal structure of the ligand was obtained for the first time. The obtained materials, including Tb,EuMOF, show potential applications in information encryption and anti-counterfeiting. Tb,EuMOF also acts as a multi-mode and self-calibrating thermometer within a broad temperature range. EuMOF exhibits rapid response and strong anti-interference detection ability for Fe2+, making it suitable for real-time sensing and detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Rajashree Panda, Mitrabhanu Behera, R. Arun Kumar, Dhananjay Joshi, R. K. Padhi
Summary: A set of red-emitting phosphor materials were synthesized for the first time through microwave-assisted combustion synthesis. The crystal structures, phase purity, and luminescent behavior of the prepared phosphors were thoroughly investigated. The results show that the synthesized phosphor materials have potential applications in wLED, display technology, and other fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Xiaozhou Fan, Wenqi Zhang, Fangcheng Lu, Yueyi Sui, Jiaxue Wang, Ziqiang Xu
Summary: This study synthesized a new fluorescent material CSO:Mn2+ to improve the temperature measurement effect of the sensor, making a significant contribution to the development of fluorescent optical fiber temperature sensors.
Article
Optics
Xiangyan Yun, Jun Zhou, Yaohui Zhu, Xiong Li, Shan Liu, Denghui Xu
Summary: Mn4+-doped phosphors have great potential in indoor plant growth lighting, and the co-doped double perovskite phosphors with Mn4+ and Eu3+ ions can achieve high temperature relative sensitivity and excellent signal discrimination ability.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Multidisciplinary
Yan Zhao, Rui Hu, Xusheng Wang, Yanxia Li
Summary: By doping Nb5+ ions, heterovalent ions, and separated levels, the low temperature sensing performance of UC luminescent materials was optimized, resulting in high absolute sensitivity and relative sensitivity with good repeatability.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Analytical
Bernhard J. Mueller, Nicole Steinmann, Sergey M. Borisov, Ingo Klimant
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Materials Science, Multidisciplinary
Sergey M. Borisov, Reinhold Pommer, Jan Svec, Sven Peters, Veronika Novakova, Ingo Klimant
JOURNAL OF MATERIALS CHEMISTRY C
(2018)
Article
Chemistry, Multidisciplinary
Eva Fritzsche, Christoph Staudinger, Jan P. Fischer, Roland Thar, Hans W. Jannasch, Joshua N. Plant, Marguerite Blum, Gene Massion, Hans Thomas, Jon Hoech, Kenneth S. Johnson, Sergey M. Borisov, Ingo Klimant
Article
Chemistry, Multidisciplinary
Yann K. Petit, Christian Leypold, Nika Mahne, Eleonore Mourad, Lukas Schafzahl, Christian Slugovc, Sergey M. Borisov, Stefan A. Freunberger
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Construction & Building Technology
Cyrill Grengg, Bernhard Mueller, Christoph Staudinger, Florian Mittermayr, Johanna Breininger, Birgit Ungerboeck, Sergey M. Borisov, Torsten Mayr, Martin Dietzel
CEMENT AND CONCRETE RESEARCH
(2019)
Article
Chemistry, Analytical
Umberto Michelucci, Michael Baumgartner, Francesca Venturini
Article
Multidisciplinary Sciences
Won-Jin Kwak, Hun Kim, Yann K. Petit, Christian Leypold, Trung Thien Nguyen, Nika Mahne, Paul Redfern, Larry A. Curtiss, Hun-Gi Jung, Sergey M. Borisov, Stefan A. Freunberger, Yang-Kook Sun
NATURE COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Umberto Michelucci, Francesca Venturini
APPLIED SCIENCES-BASEL
(2019)
Article
Computer Science, Artificial Intelligence
Umberto Michelucci, Michela Sperti, Dario Piga, Francesca Venturini, Marco A. Deriu
Summary: This paper introduces the ILD Algorithm, a technique aimed at determining the best possible performance limit in binary classification problems, which is independent of the model and represents an intrinsic property of the dataset.
Article
Engineering, Chemical
Francesca Venturini, Michela Sperti, Umberto Michelucci, Arnaud Gucciardi, Vanessa M. Martos, Marco A. Deriu
Summary: This study presents a new method based on fluorescence spectroscopy and convolutional neural networks, which allows for the prediction of chemical quality indicators of olive oil. The method is fast, low-cost, and portable, enabling on-site quality control and improving efficiency and accuracy in the production cycle of olive oil.
JOURNAL OF FOOD ENGINEERING
(2023)
Article
Computer Science, Information Systems
Francesca Venturini, Silvan Fluri, Michael Baumgartner
Summary: This study provides the fluorescence excitation-emission matrices (EEMs) and UV-spectroscopy data of 24 commercially available extra virgin olive oils (EVOOs) in Switzerland. The samples were subjected to accelerated ageing at 60 degrees C up to 53 days to investigate the effect of thermal degradation. EEMs and UV absorption parameters were measured in 10 ageing steps. The dataset can be utilized for predicting chemical parameters or classifying samples based on their quality from fluorescence spectra.
Article
Computer Science, Artificial Intelligence
Umberto Michelucci, Francesca Venturini
Summary: This study addresses the neglect of measurement errors in machine learning models by deriving formulas for commonly used metrics that take into account these errors. The new formulas provide a more realistic estimation of the model's performance and have wide applicability beyond physics.
EXPERT SYSTEMS WITH APPLICATIONS
(2023)
Article
Chemistry, Analytical
Edward Curran Eggertson, Francesca Venturini
Summary: This study investigates the changes in carotenoid concentration in extra virgin olive oil (EVOO) as it oxidizes under accelerated thermal aging using resonant Raman spectroscopy (RRS). The conventional method, HPLC, used to determine carotenoid concentration is costly and time-consuming. The study finds that the resonant Raman technique amplifies the weak carotenoid signals and identifies Raman intensity ratios as indicators of aging effects.
Article
Computer Science, Artificial Intelligence
Umberto Michelucci, Francesca Venturini
Summary: The performance of neural network models heavily relies on training data, weight initialization, and hyperparameters chosen; due to the complexity of neural networks, it is challenging to analytically estimate the distribution of statistical estimators; Bootstrap is a key resampling technique for estimating the averages and variances of statistical estimators.
MACHINE LEARNING AND KNOWLEDGE EXTRACTION
(2021)
Proceedings Paper
Optics
Francesca Venturini, Michael Baumgartner, Umberto Michelucci
OPTICAL DATA SCIENCE II
(2019)
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
