P. Pandey, Anamika Pandey, Shruti Singh, N. Shukla
A compromising and well-organized model system is needed for investigating the molecular behaviour of biomolecules as many transduction processes and biological recognition occur at biological surfaces. The application of techniques in interfacial surfaces like one molecule thick films has made a feasible and significant tool for modern scientific studies. Self Assembling Monolayers (SAMs) technology is a very useful means for producing monomolecular films of various biological molecules on different substrates. Carbon Nanotubes (CNTs) have length-to-diameter aspect ratio property which provides a large surface-to-volume ratio, making it an intensely capable material for biomolecular attachments. The incorporation of Carbon Nanotubes (CNTs) with biological systems forming functional assemblies has shown an explored area of research. Organo-sulfur mainly alkanethiol (CnH2n+1–SH) molecules get adsorbed onto CNTs. This phenomenon has grabbed a lot of attention because Self Assembling Monolayers (SAMs) of organo-sulfur compound acts as an example system for understanding important chemical, physical or biological processes.
{"title":"Self Assembled Monolayers and Carbon Nanotubes: A Significant Tool’s for Modification of Electrode Surface","authors":"P. Pandey, Anamika Pandey, Shruti Singh, N. Shukla","doi":"10.1166/SL.2020.4280","DOIUrl":"https://doi.org/10.1166/SL.2020.4280","url":null,"abstract":"A compromising and well-organized model system is needed for investigating the molecular behaviour of biomolecules as many transduction processes and biological recognition occur at biological surfaces. The application of techniques in interfacial surfaces like one molecule thick films\u0000 has made a feasible and significant tool for modern scientific studies. Self Assembling Monolayers (SAMs) technology is a very useful means for producing monomolecular films of various biological molecules on different substrates. Carbon Nanotubes (CNTs) have length-to-diameter aspect ratio\u0000 property which provides a large surface-to-volume ratio, making it an intensely capable material for biomolecular attachments. The incorporation of Carbon Nanotubes (CNTs) with biological systems forming functional assemblies has shown an explored area of research. Organo-sulfur mainly alkanethiol\u0000 (CnH2n+1–SH) molecules get adsorbed onto CNTs. This phenomenon has grabbed a lot of attention because Self Assembling Monolayers (SAMs) of organo-sulfur compound acts as an example system for understanding important chemical, physical or biological\u0000 processes.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"4 1","pages":"669-685"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85780549","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}
S. Ly, Hyeon Jeong Park, Celina Jae Won Jang, Katlynn Ryu, W. Kim, Sung Joo Jang, Kyung S. Lee
Neuromolecular glucose and dopamine assays were searched using a DNA immobilized onto a carbon nanotube paste electrode (PE). The analytical molecular detection limits of 0.13 ugL–1(6.855 × 10–10 M) Dopamine and 1.9 ugL–1 (1.06 × 10–8 M) glucose were attained using square wave stripping voltammetry. A handmade three-electrode system was implanted in the nerve network of a fish backbone, and two working electrodes were implanted in left and right pinna muscles. These were interfaced with a neuron electrochemical workstation and a nerve machine sensing circuit. This interface could be obtained for the psychological function and other body functions. The interfaced circuit could be controlled with a machine system. The results are useful in machine brain intercontrol systems.
神经分子葡萄糖和多巴胺检测使用固定在碳纳米管糊电极(PE)上的DNA进行搜索。采用方波溶出伏安法分别获得0.13 ug - 1(6.855 × 10-10 M)多巴胺和1.9 ug - 1(1.06 × 10-8 M)葡萄糖的分析检出限。将手工制作的三电极系统植入鱼脊骨的神经网络中，并在左右耳廓肌肉中植入两个工作电极。它们与神经元电化学工作站和神经机器传感电路相连接。该接口可用于心理功能和其他身体功能。接口电路可以用机器系统控制。研究结果对机器脑间控制系统具有实用价值。
{"title":"Implanted Bioelectric Neuro Assay with Sensing Interface Circuit","authors":"S. Ly, Hyeon Jeong Park, Celina Jae Won Jang, Katlynn Ryu, W. Kim, Sung Joo Jang, Kyung S. Lee","doi":"10.1166/SL.2020.4274","DOIUrl":"https://doi.org/10.1166/SL.2020.4274","url":null,"abstract":"Neuromolecular glucose and dopamine assays were searched using a DNA immobilized onto a carbon nanotube paste electrode (PE). The analytical molecular detection limits of 0.13 ugL–1(6.855 × 10–10 M) Dopamine and 1.9 ugL–1 (1.06\u0000 × 10–8 M) glucose were attained using square wave stripping voltammetry. A handmade three-electrode system was implanted in the nerve network of a fish backbone, and two working electrodes were implanted in left and right pinna muscles. These were interfaced with a neuron\u0000 electrochemical workstation and a nerve machine sensing circuit. This interface could be obtained for the psychological function and other body functions. The interfaced circuit could be controlled with a machine system. The results are useful in machine brain intercontrol systems.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"2 1","pages":"686-693"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88612836","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}
Rapid and portable detection of saxitoxin (STX) and its many congeners is highly desirable to prevent paralytic shellfish poisoning due to red tide or harmful algal blooms. In this work, we describe successful preliminary efforts to develop a very sensitive general STX family test strip employing highly fluorescent red quantum dots (Qdot 655) to detect as little as 0.5 to 1 part per billion (ppb or ng/ml) of STX with a dynamic range extending to 20,000 ppb after the prototype dipstick assay was optimized. A competitive format was necessitated by the small molecule nature of STXs having only one epitope, but the decrease in Qdot fluorescence was clearly visible to the naked eye as a function of increasing STX concentration in aqueous buffer. The competitive displacement assay format required conjugation of a primary amine in STX to carboxyl-Qdot 655 via a covalent carbodiimide coupling reaction which was validated by an electrophoretic mobility band shift assay.
{"title":"Preliminary Development of a Competitive Fluorescent Quantum Dot-Based Immunochromatographic Test Strip for Sensitive Saxitoxin Detection","authors":"J. Bruno, J. John","doi":"10.1166/SL.2020.4247","DOIUrl":"https://doi.org/10.1166/SL.2020.4247","url":null,"abstract":"Rapid and portable detection of saxitoxin (STX) and its many congeners is highly desirable to prevent paralytic shellfish poisoning due to red tide or harmful algal blooms. In this work, we describe successful preliminary efforts to develop a very sensitive general STX family test strip\u0000 employing highly fluorescent red quantum dots (Qdot 655) to detect as little as 0.5 to 1 part per billion (ppb or ng/ml) of STX with a dynamic range extending to 20,000 ppb after the prototype dipstick assay was optimized. A competitive format was necessitated by the small molecule nature\u0000 of STXs having only one epitope, but the decrease in Qdot fluorescence was clearly visible to the naked eye as a function of increasing STX concentration in aqueous buffer. The competitive displacement assay format required conjugation of a primary amine in STX to carboxyl-Qdot 655 via a covalent\u0000 carbodiimide coupling reaction which was validated by an electrophoretic mobility band shift assay.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"2 1","pages":"459-463"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79098964","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}
Yahya Ebrahimabadi, M. Mokhtary, Mohamad Mehrshad, Mahdi Abdollahi
Epoxidation os liquid carboxyl-terminated butadiene acrylonitrile (CTBN) rubber was done using hydrogen peroxide and Acetic acid, and different degrees of epoxidation was used to curing and harden the epoxy resin. Using H-NMR and also FTIR methods, Epoxy of the double resin bonds used was investigated. According to the data obtained from these two methods, some available dual links are epoxy and ready for use in the mentioned applications. The peaks appeared at 1070, and 1230 cm-1 in the FTIR spectrum of ECTBN are attributed to the epoxy groups. In the HNMR spectrum of CTBN, two new signals have appeared at 2.69 ppm and 2.93 ppm, which are attributed to the protons of epoxy groups with Cis and trans configurations, respectively. Epoxy resin has been used as an electrical insulator for burying electronic boards and insulating telecommunication components and electrochemical sensors (paste electrodes structure and screen printed electrodes) due to its properties such as high breakdown voltage resistance, water-resistance and resistance to chemicals, resistance to thermal and electrical shocks.
{"title":"Epoxidized Percentage of CTBN (ECTBN) Double Bonds for the Application of Layering in Composite Industries and Insulation of Electronic Chips, Electrochemical Sensors","authors":"Yahya Ebrahimabadi, M. Mokhtary, Mohamad Mehrshad, Mahdi Abdollahi","doi":"10.1166/SL.2020.4234","DOIUrl":"https://doi.org/10.1166/SL.2020.4234","url":null,"abstract":"Epoxidation os liquid carboxyl-terminated butadiene acrylonitrile (CTBN) rubber was done using hydrogen peroxide and Acetic acid, and different degrees of epoxidation was used to curing and harden the epoxy resin. Using H-NMR and also FTIR methods, Epoxy of the double resin bonds used\u0000 was investigated. According to the data obtained from these two methods, some available dual links are epoxy and ready for use in the mentioned applications. The peaks appeared at 1070, and 1230 cm-1 in the FTIR spectrum of ECTBN are attributed to the epoxy groups. In the HNMR spectrum\u0000 of CTBN, two new signals have appeared at 2.69 ppm and 2.93 ppm, which are attributed to the protons of epoxy groups with Cis and trans configurations, respectively. Epoxy resin has been used as an electrical insulator for burying electronic boards and insulating telecommunication components\u0000 and electrochemical sensors (paste electrodes structure and screen printed electrodes) due to its properties such as high breakdown voltage resistance, water-resistance and resistance to chemicals, resistance to thermal and electrical shocks.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89334891","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}
Prateek Kumar, Maneesha Gupta, Naveen Kumar, M. D. Cruz, Hemant Singh, Ishan, Kartik Anand
With technology invading nanometer regime performance of the Metal-Oxide-semiconductor Field Effect Transistor is largely hampered by short channel effects. Most of the simulation tools available do not include short channel effects and quantum effects in the analysis which raises doubt on their authenticity. Although researchers have tried to provide an alternative in the form of tunnel field-effect transistors, junction-less transistors, etc. but they all suffer from their own set of problems. Therefore, Metal-Oxide-Semiconductor Field-Effect Transistor remains the backbone of the VLSI industry. This work is dedicated to the design and study of the novel tub-type Metal-Oxide-Semiconductor Field-Effect Transistor. For simulation Non-Equilibrium Green’s Function is used as the primary model of simulation. The device is analyzed under different physical variations like work function, permittivity, and interface trap charge. This work uses Silicon-Molybdenum Disulphide heterojunction and Silicon-Tungsten Disulphide heterojunction as channel material. Results for both the heterojunctions are compared. It was analyzed that Silicon-Molybdenum Disulphide heterojunction provides better linearity and Silicon-Tungsten Disulphide heterojunction provides better switching speed than conventional Metal-Oxide-Semiconductor Field-Effect Transistor.
{"title":"Performance Evaluation of Silicon-Transition Metal Dichalcogenides Heterostructure Based Steep Subthreshold Slope-Field Effect Transistor Using Non-Equilibrium Green’s Function","authors":"Prateek Kumar, Maneesha Gupta, Naveen Kumar, M. D. Cruz, Hemant Singh, Ishan, Kartik Anand","doi":"10.1166/SL.2020.4236","DOIUrl":"https://doi.org/10.1166/SL.2020.4236","url":null,"abstract":"With technology invading nanometer regime performance of the Metal-Oxide-semiconductor Field Effect Transistor is largely hampered by short channel effects. Most of the simulation tools available do not include short channel effects and quantum effects in the analysis which raises doubt\u0000 on their authenticity. Although researchers have tried to provide an alternative in the form of tunnel field-effect transistors, junction-less transistors, etc. but they all suffer from their own set of problems. Therefore, Metal-Oxide-Semiconductor Field-Effect Transistor remains the backbone\u0000 of the VLSI industry. This work is dedicated to the design and study of the novel tub-type Metal-Oxide-Semiconductor Field-Effect Transistor. For simulation Non-Equilibrium Green’s Function is used as the primary model of simulation. The device is analyzed under different physical variations\u0000 like work function, permittivity, and interface trap charge. This work uses Silicon-Molybdenum Disulphide heterojunction and Silicon-Tungsten Disulphide heterojunction as channel material. Results for both the heterojunctions are compared. It was analyzed that Silicon-Molybdenum Disulphide\u0000 heterojunction provides better linearity and Silicon-Tungsten Disulphide heterojunction provides better switching speed than conventional Metal-Oxide-Semiconductor Field-Effect Transistor.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"190 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74170436","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}
I. O. Isaac, Emaime J. Uwanta, C. Obadimu, Glory E. Etuk
The use of environmentally benign materials as adsorbent for bleaching palm oil has been revitalize due to loss of significant amount of oil associated with commercial bleaching earth. This paper examined the performance of inactivated shell samples from snail, mussel, periwinkle and the corresponding acid activated samples as an alternative bleaching material for palm oil. Effectiveness of the bleaching process was examined by determining critical process parameters such as degree of bleaching (%), adsorbent dosage (%), and oil retention capacity of the adsorbent. Maximum bleaching performance of 98.70%–96.60% for inactivated samples and 97.79%–95.52% for 0.5 M hydrochloric acid activated samples were obtained at low adsorbent dosage of 9.09 wt.%. The weight percentage of residual oil (1.38–20.08 wt.%) in the spent adsorbent was extremely low for all the samples. Inactivated samples could be a better alternative for commercial adsorbent.
{"title":"Performance Analysis of Inactivated and Acid Activated Marine and Terrestrial Shells Based Adsorbent as an Alternative Bleaching Material for Palm Oil","authors":"I. O. Isaac, Emaime J. Uwanta, C. Obadimu, Glory E. Etuk","doi":"10.1166/SL.2020.4258","DOIUrl":"https://doi.org/10.1166/SL.2020.4258","url":null,"abstract":"The use of environmentally benign materials as adsorbent for bleaching palm oil has been revitalize due to loss of significant amount of oil associated with commercial bleaching earth. This paper examined the performance of inactivated shell samples from snail, mussel, periwinkle and\u0000 the corresponding acid activated samples as an alternative bleaching material for palm oil. Effectiveness of the bleaching process was examined by determining critical process parameters such as degree of bleaching (%), adsorbent dosage (%), and oil retention capacity of the adsorbent. Maximum\u0000 bleaching performance of 98.70%–96.60% for inactivated samples and 97.79%–95.52% for 0.5 M hydrochloric acid activated samples were obtained at low adsorbent dosage of 9.09 wt.%. The weight percentage of residual oil (1.38–20.08 wt.%) in the spent adsorbent was extremely\u0000 low for all the samples. Inactivated samples could be a better alternative for commercial adsorbent.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"42 1","pages":"483-492"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73542000","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}
S. Pal, S. Mondal, Prasanta K. Pal, Ajit Das, D. Mondal, Ananya Chaudhuri, Bholanath Panda, J. Maity
This survey outlines the impact of nanoparticles and the importance of nanotechnology in textiles materials. It shows a unique move to nanomaterials as another instrument to enhance the properties and addition of multi-functionalities. Human security and prosperity are undermined by organisms causing various irresistible sicknesses bringing about a substantial number of deaths every year. Currently, nanotechnology is considered the most interesting technology for smart textile commercial applications; since it allows the permanent and effective functionalization of substrate without affecting their macrosacle properties, such as breathability and comfortability. Nanoparticles as antimicrobial agents have got extensive consideration in both scholarly and mechanical researchers due to their biological activity. Beside this, polymeric covered nanoparticles based materials have increased much consideration because of progression in polymer science and innovation. This survey article likewise addresses the production and distribution of nanoparticles for biomedical textile applications.
{"title":"Applications of Nanotechnology for Antibacterial Finishing Textiles: A Review","authors":"S. Pal, S. Mondal, Prasanta K. Pal, Ajit Das, D. Mondal, Ananya Chaudhuri, Bholanath Panda, J. Maity","doi":"10.1166/SL.2020.4260","DOIUrl":"https://doi.org/10.1166/SL.2020.4260","url":null,"abstract":"This survey outlines the impact of nanoparticles and the importance of nanotechnology in textiles materials. It shows a unique move to nanomaterials as another instrument to enhance the properties and addition of multi-functionalities. Human security and prosperity are undermined by\u0000 organisms causing various irresistible sicknesses bringing about a substantial number of deaths every year. Currently, nanotechnology is considered the most interesting technology for smart textile commercial applications; since it allows the permanent and effective functionalization of substrate\u0000 without affecting their macrosacle properties, such as breathability and comfortability. Nanoparticles as antimicrobial agents have got extensive consideration in both scholarly and mechanical researchers due to their biological activity. Beside this, polymeric covered nanoparticles based\u0000 materials have increased much consideration because of progression in polymer science and innovation. This survey article likewise addresses the production and distribution of nanoparticles for biomedical textile applications.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"8 1","pages":"437-448"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75219829","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}
T. Das, Hoque Shehenaz Shamim, D. Kalita, S. M. Borah, S. Baruah
In this work, microwires of gold nanoparticles (Au NPs) were grown using the fungus Aspergillus niger as a biological template. Au NPs were synthesized through the reduction of chloroauric acid using monosodium glutamate (MSG) in an aqueous media. The MSG here, served as a nutritional trigger behind the self-organization of Au NPs on Aspergillus niger apart from being the reducing as well as stabilizing agent. The fungal hyphae coated with gold nanoparticles were spread over the glass slide. The ZnO/ZnS core/shell nanostructures were deposited in a 2 mm gap of gold microwires’ spread. Uric acid sensing behavior of these ZnO/ZnS core/shell nanostructures were studied using the gold microwires as electrode.
{"title":"ZnO/ZnS Core/Shell Nanostructures on Biologically Inspired Gold Wires for Uric Acid Sensing","authors":"T. Das, Hoque Shehenaz Shamim, D. Kalita, S. M. Borah, S. Baruah","doi":"10.1166/SL.2020.4246","DOIUrl":"https://doi.org/10.1166/SL.2020.4246","url":null,"abstract":"In this work, microwires of gold nanoparticles (Au NPs) were grown using the fungus Aspergillus niger as a biological template. Au NPs were synthesized through the reduction of chloroauric acid using monosodium glutamate (MSG) in an aqueous media. The MSG here, served as a nutritional\u0000 trigger behind the self-organization of Au NPs on Aspergillus niger apart from being the reducing as well as stabilizing agent. The fungal hyphae coated with gold nanoparticles were spread over the glass slide. The ZnO/ZnS core/shell nanostructures were deposited in a 2 mm gap of gold\u0000 microwires’ spread. Uric acid sensing behavior of these ZnO/ZnS core/shell nanostructures were studied using the gold microwires as electrode.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"43 9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75570965","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}
Framework the paper we consider an analytical approach to analyze mass and heat transport in heterostructures during manufacturing of integrated circuits with account nonlinearity of processes. The approach gives a possibility to analyze mass and heat transport in multilayer structures without crosslinking of solutions on interfaces between layers. The approach also gives a possibility to take into account spatial and temporal variation of parameters of considered processes. Based on this approach we analyzed manufacturing a current comparator for sensor applications to increase density of elements.
{"title":"On Analysis of Mass Transport to Formulate Conditions for Increasing Integration Rate of Elements Framework Current Comparator in Sensor Applications. An Approach to Optimize of Technological Process","authors":"E. Pankratov","doi":"10.1166/SL.2020.4262","DOIUrl":"https://doi.org/10.1166/SL.2020.4262","url":null,"abstract":"Framework the paper we consider an analytical approach to analyze mass and heat transport in heterostructures during manufacturing of integrated circuits with account nonlinearity of processes. The approach gives a possibility to analyze mass and heat transport in multilayer structures\u0000 without crosslinking of solutions on interfaces between layers. The approach also gives a possibility to take into account spatial and temporal variation of parameters of considered processes. Based on this approach we analyzed manufacturing a current comparator for sensor applications to\u0000 increase density of elements.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87796798","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}
SnO2 pellets with surface gold interdigitated electrodes was obtained and used in the differentiation of biodiesel blends. The tin oxide synthesis method was polymeric precursor with further thermal treatment at 500 °C to eliminate organic part, conformed and sintered at three temperatures: 700° (Sn1), 900° (Sn2) and 1100 °C (Sn3). The samples were studied by X-ray Diffraction, FEG-SEM (Field Emission Gun-Scanning Electron Microscopy), Raman spectroscopy and electrical sensing gas measurements. The characterization techniques confirm the phase cassiterite (tetragonal type rutile structure), and particles with aspects almost spherical with particles size among 30 and 90 nm, Raman vibrational modes are characteristic of tin dioxide in rutile phase. The sensorial measurements showed high sensitivity in the tests with mixtures biodiesel/Ethanol allowing to distinguish the blends, but not well distinguished the blend diesel/biodiesel.
{"title":"Characterization and Study of a Gas Sensor Based on SnO2 Pellets for Differentiation Biodiesel Blends","authors":"L. Castañeda","doi":"10.1166/SL.2020.4259","DOIUrl":"https://doi.org/10.1166/SL.2020.4259","url":null,"abstract":"SnO2 pellets with surface gold interdigitated electrodes was obtained and used in the differentiation of biodiesel blends. The tin oxide synthesis method was polymeric precursor with further thermal treatment at 500 °C to eliminate organic part, conformed and sintered\u0000 at three temperatures: 700° (Sn1), 900° (Sn2) and 1100 °C (Sn3). The samples were studied by X-ray Diffraction, FEG-SEM (Field Emission Gun-Scanning Electron Microscopy), Raman spectroscopy and electrical sensing gas measurements. The characterization techniques confirm the phase\u0000 cassiterite (tetragonal type rutile structure), and particles with aspects almost spherical with particles size among 30 and 90 nm, Raman vibrational modes are characteristic of tin dioxide in rutile phase. The sensorial measurements showed high sensitivity in the tests with mixtures biodiesel/Ethanol\u0000 allowing to distinguish the blends, but not well distinguished the blend diesel/biodiesel.","PeriodicalId":21781,"journal":{"name":"Sensor Letters","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88019056","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}
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