Neuromorphic artificial synaptic devices exhibit significant application in the fields of deep learning and edge computing. In this study, we proposed a PbS film-based artificial synaptic device that features a simple structure and manufacturing process, and is easy to integrate. Under the stimulation of optical signals, the device can simulate the functions of human neural synapses, such as short-term plasticity, excitatory postsynaptic currents (EPSC), and paired pulse facilitation, exhibiting memory capabilities when triggered by consecutive light pulses. We used it for detection of radicals in standard Chinese characters, constructing an automatically controlled recognition system that uses a field-programmable gate array (FPGA) combined with a convolutional neural network (CNN) to accomplish the detection of radicals. A dataset of 1000 samples was established and extended using expansion techniques to prevent overfitting. Using FPGA and ARM combined with a CNN network, we have achieved an accuracy of 96% in detecting radical components. This study suggests that the present nanofilm photodetector with processing performance may find promising application in future pattern recognition.
{"title":"An Artificial Synaptic Devices Based on PbS Nanofilm Photodetectors for Radical Recognition System Application","authors":"Zhi-Guo Zhu;Jia Liu;Yang Wang;Sheng-Hui Luo;Can Fu;Meng-Fei Liang;Lin-Bao Luo;Feng-Xia Liang","doi":"10.1109/LSENS.2024.3497148","DOIUrl":"https://doi.org/10.1109/LSENS.2024.3497148","url":null,"abstract":"Neuromorphic artificial synaptic devices exhibit significant application in the fields of deep learning and edge computing. In this study, we proposed a PbS film-based artificial synaptic device that features a simple structure and manufacturing process, and is easy to integrate. Under the stimulation of optical signals, the device can simulate the functions of human neural synapses, such as short-term plasticity, excitatory postsynaptic currents (EPSC), and paired pulse facilitation, exhibiting memory capabilities when triggered by consecutive light pulses. We used it for detection of radicals in standard Chinese characters, constructing an automatically controlled recognition system that uses a field-programmable gate array (FPGA) combined with a convolutional neural network (CNN) to accomplish the detection of radicals. A dataset of 1000 samples was established and extended using expansion techniques to prevent overfitting. Using FPGA and ARM combined with a CNN network, we have achieved an accuracy of 96% in detecting radical components. This study suggests that the present nanofilm photodetector with processing performance may find promising application in future pattern recognition.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"8 12","pages":"1-4"},"PeriodicalIF":2.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-13DOI: 10.1109/LSENS.2024.3497924
Lazar Milić;Željko Popović;Ivana Mišić;Alessandro Luzio;Mario Caironi;Goran M. Stojanović
Edible electronics present a blossoming path to a greener and eco-friendly future for electronics while being biocompatible with living beings. With this characteristic, edible electronics have been recently proposed for the design and fabrication of edible and digestible sensors. More precisely, it has become a strong and sustainable candidate for continuous and in vivo monitoring and diagnosis of patients. Yet, the field is in constant search for new functional materials satisfying the stringent and contrasting requirements of safe edibility and performing electronics. With this in mind, a novel edible substrate, based entirely on cookie dough, is presented in this letter. An extensive mechanical and electrical characterization of the edible substrate is provided, aside from a clear step-by-step guide for its fabrication. In addition, to prove the use of the cookie dough substrate for food-based electronics, we demonstrate a voltage divider and a resonant circuit fabricated on it. Tests have been conducted in dry and wet conditions, simulating intraoral environment. Sensing capabilities have been also investigated, with variations of temperature and pH. These findings push the boundaries of edible electronics, enabling a growing community of researchers to utilize the proposed substrate and circuits in a broad range of sensor technologies and applications.
{"title":"Electrical Circuits Developed on Cookie Dough-Based Substrate and Their Sensing Applications","authors":"Lazar Milić;Željko Popović;Ivana Mišić;Alessandro Luzio;Mario Caironi;Goran M. Stojanović","doi":"10.1109/LSENS.2024.3497924","DOIUrl":"https://doi.org/10.1109/LSENS.2024.3497924","url":null,"abstract":"Edible electronics present a blossoming path to a greener and eco-friendly future for electronics while being biocompatible with living beings. With this characteristic, edible electronics have been recently proposed for the design and fabrication of edible and digestible sensors. More precisely, it has become a strong and sustainable candidate for continuous and in vivo monitoring and diagnosis of patients. Yet, the field is in constant search for new functional materials satisfying the stringent and contrasting requirements of safe edibility and performing electronics. With this in mind, a novel edible substrate, based entirely on cookie dough, is presented in this letter. An extensive mechanical and electrical characterization of the edible substrate is provided, aside from a clear step-by-step guide for its fabrication. In addition, to prove the use of the cookie dough substrate for food-based electronics, we demonstrate a voltage divider and a resonant circuit fabricated on it. Tests have been conducted in dry and wet conditions, simulating intraoral environment. Sensing capabilities have been also investigated, with variations of temperature and pH. These findings push the boundaries of edible electronics, enabling a growing community of researchers to utilize the proposed substrate and circuits in a broad range of sensor technologies and applications.","PeriodicalId":13014,"journal":{"name":"IEEE Sensors Letters","volume":"8 12","pages":"1-4"},"PeriodicalIF":2.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10752833","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Accurate detection of gram-positive bacterial colonies is essential for managing chronic wounds and overcoming delays in healing, as these bacteria can worsen wound conditions and impede recovery. This study introduces a cost-effective electrochemical sensing platform designed to support healthcare professionals in making timely, targeted treatment decisions. We developed the platform using chemically functionalized amine-terminated carbon surfaces combined with the TLR1/TLR2 heterodimer complex to detect gram-positive bacteria. The biosensors featuring these advanced carbon surfaces demonstrated superior performance due to their high surface area and efficient electron transfer capabilities. The TLR1/TLR2-based sensors accurately identified gram-positive bacteria, with a theoretical detection limit of 0.0413 CFU/mL. The sensors also exhibited high selectivity and sensitivity, with a response rate of 220.878 ((ΔR/R)/CFU/mL)/cm 2