ECS sensors plus最新文献_第2页

Perspective—Five Sensor-Centric Grand Challenges in Soft Robotics 软机器人中以传感器为中心的五大挑战

ECS sensors plus Pub Date : 2023-11-10 DOI: 10.1149/2754-2726/ad08d6

Kunal Singh, Ajit Khosla, Shilpa Gupta

引用次数: 0

Refractive Index-Modulated LSPR Sensing in 20-120 nm Gold and Silver Nanoparticles: A Simulation Study 20-120纳米金、银纳米粒子的折射率调制LSPR传感:模拟研究

ECS sensors plus Pub Date : 2023-11-02 DOI: 10.1149/2754-2726/ad08d8

Zoe Bradley, David Cunningham, Nikhil Bhalla

{"title":"Refractive Index-Modulated LSPR Sensing in 20-120 nm Gold and Silver Nanoparticles: A Simulation Study","authors":"Zoe Bradley, David Cunningham, Nikhil Bhalla","doi":"10.1149/2754-2726/ad08d8","DOIUrl":"https://doi.org/10.1149/2754-2726/ad08d8","url":null,"abstract":"Abstract Localized surface plasmon resonance (LSPR) based sensing has been a simple and cost-effective way to measure local refractive index changes. LSPR materials exhibit fascinating properties that have significant implications for various bio/chemical sensing applications. In many of these applications, the focus has traditionally been on analyzing the intensity of the reflected or transmitted signals in terms of the refractive index of the surrounding medium. However, limited simulation work is conducted on investigating the refractive index sensitivity of LSPR materials. Within this context, here we simulate the refractive index sensing properties of spherical gold (Au) and silver (Ag) nanoparticles ranging from 20-120 nm diameter within 1.0 to 1.50 refractive index units (RIU). After analyzing the peak optical efficiency and peak wavelength, we report the sensing performance of these materials in terms of sensitivity, linearity and figure of merit (FOM). Overall, our observations have revealed greatest FOM values for the smallest sized nanoparticles, a FOM of 6.6 for 20 nm AuNPs and 11.9 for 20 nm AgNPs with refractive index of 1.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135875390","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}

引用次数: 0

Anticipating Challenges in Optical Nanobiosensors for Global Detection of Respiratory Viruses and Emerging Threats 预测光学纳米生物传感器在全球检测呼吸道病毒和新出现的威胁方面的挑战

ECS sensors plus Pub Date : 2023-11-02 DOI: 10.1149/2754-2726/ad08d5

Shirlley E. Martínez Tolibia, Andrés Galdámez-Martínez, Rafael A. Salinas, Ateet Dutt

引用次数: 1

Direct Laser-Functionalized Au-LIG Sensors for Real-time Electrochemical Monitoring of Response of Pseudomonas aeruginosa Biofilms to Antibiotics 直接激光功能化Au-LIG传感器用于铜绿假单胞菌生物膜对抗生素反应的实时电化学监测

ECS sensors plus Pub Date : 2023-11-02 DOI: 10.1149/2754-2726/ad08d4

Keren Zhou, Vinay Kammarchedu, Aida Ebrahimi

{"title":"Direct Laser-Functionalized Au-LIG Sensors for Real-time Electrochemical Monitoring of Response of Pseudomonas aeruginosa Biofilms to Antibiotics","authors":"Keren Zhou, Vinay Kammarchedu, Aida Ebrahimi","doi":"10.1149/2754-2726/ad08d4","DOIUrl":"https://doi.org/10.1149/2754-2726/ad08d4","url":null,"abstract":"Abstract Pseudomonas aeruginosa (P. aeruginosa) is a phenazine-producing pathogen recognized for its biofilm-mediated antibiotic resistance, showing up to 1000 times higher resistance than planktonic cells. In particular, it is shown that a phenazine called pyocyanin promotes antibiotic tolerance in P. aeruginosa cultures by upregulating efflux pumps and inducing biofilm formation. Therefore, real-time study of phenazine production in response to antibiotics could offer new insights for early detection and management of infection. Toward this goal, this work demonstrates real-time monitoring of P. aeruginosa colony biofilms challenged by antibiotics using electrochemical sensors based on direct laser functionalization of laser induced graphene (LIG) with gold (Au) nanostructures. Specifically, two routes for functionalization of LIG electrodes with Au-containing solutions are studied: electroless deposition and direct laser functionalization (E-Au/LIG and L-Au/LIG). While both methods show comparable sensitivity (1.276 vs 1.205 µA/µM), E-Au/LIG has bactericidal effects which makes it unsuitable as a sensor material. The effect of antibiotics (gentamicin as a model drug) on the production rate of phenazines before (i.e., in planktonic phase) or after biofilm formation is studied. The sensor data confirms that the P. aeruginosa biofilms are at least 100 times more tolerant to the antibiotic than planktonic cells.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135875582","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}

引用次数: 0

Review—Prospects in Cancer Diagnosis: Exosome-Chip for Liquid Biopsy 肿瘤诊断:外泌体芯片液体活检技术的研究进展

ECS sensors plus Pub Date : 2023-11-02 DOI: 10.1149/2754-2726/ad08d7

Kamil Reza Khondakar, Matin Ataei Kachouei, Frank Efe Efe Erukainure, Md. Azahar Ali

引用次数: 0

Recent Developments in Sensor Technologies for Enabling the Hydrogen Economy 实现氢经济的传感器技术的最新发展

ECS sensors plus Pub Date : 2023-10-26 DOI: 10.1149/2754-2726/ad0736

Kannan Ramaiyan, Lok-kun Tsui, Eric L Brosha, Cortney Kreller, Joseph Stetter, Tamara Russ, Winncy Du, D Peaslee, Gary W. Hunter, Jennifer Xu, Darby Makel, Fernando Garzon, Rangachary Mukundan

{"title":"Recent Developments in Sensor Technologies for Enabling the Hydrogen Economy","authors":"Kannan Ramaiyan, Lok-kun Tsui, Eric L Brosha, Cortney Kreller, Joseph Stetter, Tamara Russ, Winncy Du, D Peaslee, Gary W. Hunter, Jennifer Xu, Darby Makel, Fernando Garzon, Rangachary Mukundan","doi":"10.1149/2754-2726/ad0736","DOIUrl":"https://doi.org/10.1149/2754-2726/ad0736","url":null,"abstract":"Abstract Efforts to create a sustainable hydrogen economy are gaining momentum as governments all over the world are investing in hydrogen production, storage, distribution, and delivery technologies to develop a hydrogen infrastructure. This involves transporting hydrogen in gaseous or liquid form or using carrier gases such as methane, ammonia, or mixtures of methane and hydrogen. Hydrogen is a colorless, odorless gas and can easily leak into the atmosphere leading to economic loss and safety concerns. Therefore, deployment of robust low-cost sensors for various scenarios involving hydrogen is of paramount importance. Here, we review some recent developments in hydrogen sensors for applications such as leak detection, safety, and process monitoring in production, transport, and use scenarios. The status of methane and ammonia sensors is covered due to their important role in hydrogen production and transportation using existing natural gas and ammonia infrastructure. This review further provides an overview of existing commercial hydrogen sensors and also addresses the potential for hydrogen as an interferent gas for currently used sensors. This review can help developers and users make informed decisions about how to drive hydrogen sensor technology forward and to incorporate hydrogen sensors into the various hydrogen deployment projects in the coming decade.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134907539","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}

引用次数: 0

Enabling Smart Agriculture through Sensor-Integrated Microfluidic Chip to Monitor Nutrient Uptake in Plants 通过集成传感器的微流控芯片监测植物的营养吸收，实现智能农业

ECS sensors plus Pub Date : 2023-10-20 DOI: 10.1149/2754-2726/ad024e

vivek kamat, Vagheeswari Venkadesh, Lamar Burton, Krishnaswamy Jayachandran, Shekhar Bhansali

{"title":"Enabling Smart Agriculture through Sensor-Integrated Microfluidic Chip to Monitor Nutrient Uptake in Plants","authors":"vivek kamat, Vagheeswari Venkadesh, Lamar Burton, Krishnaswamy Jayachandran, Shekhar Bhansali","doi":"10.1149/2754-2726/ad024e","DOIUrl":"https://doi.org/10.1149/2754-2726/ad024e","url":null,"abstract":"The soil microenvironment greatly influences a plant’s ability to absorb nutrients and germinate. Sensing these changes in soil medium is critical to understand plant nutrient requirements. Soil being dynamic represents changes in nutrient content, element mobility, texture, water-holding capacity, and microbiota which affects the nutrient levels. These minor changes affect the plant in early growth and development and studying these changes has always been challenging. Microfluidics provides a platform to study nutrient availability and exchange in small volumes of liquid or media resembling plant microenvironments. Here, we have developed a novel microfluidic chip-embedded molecular imprinted sensor for sensing nitrate and phosphate in the media. For data acquisition and recording we have implemented a potentiostat controlled via a microcontroller allowing data storage and transfer via a long-range radio module (LoRA). The microfluidic device’s functionality was validated by germination of the legume crimson red and recoding the nitrate and phosphate levels in media for 7 d. The MIP-based sensor measures nitrate and phosphate, in the range from 1 to 1000 mM. The accuracy of detection for nitrate and phosphate showed 99% and 95% respectively. The chip coupled with MIP based sensor for nutrient analysis serves as a platform technology for studying nitrate and phosphate nutrient exchange and interaction. This chip in the future can be implemented to study plant deficiencies, drought resistance, and plant immunity.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135513556","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}

引用次数: 0

Detection of Microbes in Ice Using Microfabricated Impedance Spectroscopy Sensors 用微阻抗光谱传感器检测冰中的微生物

ECS sensors plus Pub Date : 2023-10-19 DOI: 10.1149/2754-2726/ad024d

Lauren B. Kaiser-Jackson, Markus Dieser, Matthew McGlennen, Albert E. Parker, Christine M. Foreman, Stephan Warnat

{"title":"Detection of Microbes in Ice Using Microfabricated Impedance Spectroscopy Sensors","authors":"Lauren B. Kaiser-Jackson, Markus Dieser, Matthew McGlennen, Albert E. Parker, Christine M. Foreman, Stephan Warnat","doi":"10.1149/2754-2726/ad024d","DOIUrl":"https://doi.org/10.1149/2754-2726/ad024d","url":null,"abstract":"During the growth of a polycrystalline ice lattice, microorganisms partition into veins, forming an ice vein network highly concentrated in salts and microbial cells. We used microfabricated electrochemical impedance spectroscopy (EIS) sensors to determine the effect of microorganisms on the electrochemical properties of ice. Solutions analyzed consisted of a 176 μ S cm −1 conductivity solution, fluorescent beads, and Escherichia coli HB101-GFP to model biotic organisms. Impedance spectroscopy data were collected at −10 °C, −20 °C, and −25 °C within either ice veins or ice grains (i.e., no veins) spanning the sensors. After freezing, the fluorescent beads and E. coli were partitioned into the ice veins. The corresponding impedance data were discernibly different in the presence of ice veins and microbial impurities. The presence of microbial cells in ice veins was evident by decreased electrical characteristics (electrode polarization between electrode and ice matrix) relative to solid ice grains. Further, this electrochemical behavior was reversed in all bead-doped solutions, indicating that microbial processes influence sensor response. Linear mixed-effects models empirically corroborated the differences in polarization associated with the presence and absence of microbial cells in ice. We show that EIS has the potential to detect microbes in ice and differentiate between veins and solid grains.","PeriodicalId":72870,"journal":{"name":"ECS sensors plus","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135667270","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}

引用次数: 0

Molecular Characterization of Plastic Waste Using Standoff Photothermal Spectroscopy 利用对峙光热光谱技术表征塑料废物的分子特性

ECS sensors plus Pub Date : 2023-10-06 DOI: 10.1149/2754-2726/acfb92

Yaoli Zhao, Patartri Chakraborty, Zixia Meng, Asalatha Nair Syamala Amma, Amit Goyal, Thomas Thundat

引用次数: 0

Proximity-Driven DNA Nanosensors. 接近驱动DNA纳米传感器。

ECS sensors plus Pub Date : 2023-09-01 Epub Date: 2023-07-06 DOI: 10.1149/2754-2726/ace068

Sara R Nixon, Imon Kanta Phukan, Brian J Armijo, Sasha B Ebrahimi, Devleena Samanta

引用次数: 0