{"title":"Resistive Switching in Single Core-Shell Nanoparticles*","authors":"M. Speckbacher, X. Ji, M. Tornow","doi":"10.1109/NANO46743.2019.8993937","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993937","url":null,"abstract":"Resistive switching in single spherical core-shell Ag/SiOx-nanoparticles (CSNP) of diameter 150 nm is reported. These nanoparticles were contacted by interdigitated electrodes (IDE) and exhibit either bipolar memristive or threshold switching with OFF/ON resistance ratios in excess of three orders of magnitude. A switching mechanism based on silver ion migration in the silica shell is proposed, which leads to reversible conductive filament formation and rupture. Application of CSNP as functional building blocks in future self-assembled 3D memory architectures or neuromorphic networks is proposed.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117312854","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}
{"title":"Synthesis of high throughput ibuprofen nanoparticles via supercritical CO2 processing","authors":"S. Sharma, R. Jagannathan","doi":"10.1109/NANO46743.2019.8993945","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993945","url":null,"abstract":"High throughput ibuprofen nanoparticles with a yield up to 80 % (w/w) are synthesized via supersonic jet expansion of the supercritical CO2 processing. The effect of four different surfactants on the size of ibuprofen nanoparticles were investigated. Drop casting of these aqueous solutions on a quartz substrate and resulted in stable, viscous liquid films observed by optical, atomic force microscopy (AFM) and scanning electron microscopy (SEM). X-ray diffraction (XRD) and confocal Raman confirmed that these nanoparticles have retained their structural and chemical identity after rapid expansion of a supercritical solution (RESS) processing.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116006501","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}
W. Tian, Yuting Zhang, Mengjuan. Li, Zhongliang Xie, Wenhua Li
{"title":"5-Bit Spiral Distributed RF MEMS Phase Shifter","authors":"W. Tian, Yuting Zhang, Mengjuan. Li, Zhongliang Xie, Wenhua Li","doi":"10.1109/NANO46743.2019.8993952","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993952","url":null,"abstract":"A new spiral distributed radio frequency micro-electromechanical system (RF MEMS) phase shifter which uses 31 MEMS switches to achieve 5-bit phase shifts is designed in this paper. The area of the phase shifter is 2.6×2.6 mm2. The simulation results of phase shift are 11.43°, 23.04°, 44.53°, 91.73° and 182.65° when the central operating frequency is 40 GHz. The deviations of the design target are 0.18°, 0.54°, 0.47°, 1.73° and 2.65°, respectively. Insertion loss and return loss are -15.1092 dB/-8.9120 dB, -14.2271 dB/-9.9053 dB, -15.1092 dB/-8.9120 dB, -13.2439 dB/-11.6679 dB and -16.3046 dB/-10.2057dB, respectively. The simulation results and phase shift accuracy of the 31 phase shifts of RF MEMS phase shifter are given, and the deviation of the design target is within 3.72°. It realizes the requirements of RF MEMS phased array system. This phase shifter has the advantages of high frequency, small size, high precision, low loss and low cost.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123671020","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}
Shinyoung Park, J. Jang, Sung-Jin Choi, D. M. Kim, Dae Hwan Kim
{"title":"Synaptic behavior of flexible IGZO TFTs with Al2O3 gate insulator by low temperature ALD","authors":"Shinyoung Park, J. Jang, Sung-Jin Choi, D. M. Kim, Dae Hwan Kim","doi":"10.1109/NANO46743.2019.8993883","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993883","url":null,"abstract":"Flexible InGaZnO (IGZO) thin-film transistor (TFT) with Al2O3 gate insulator (GI) which is deposited by low temperature (LT) atomic layer deposition (ALD) is proposed and its synaptic behavior and mechanical stability are demonstrated on a polyethylene terephthalate substrate. The change of threshold voltage under bending test is attributed to the generation of ionized oxygen vacancy resulting from the oxygen bond-breaking. In addition, the synaptic behavior is clearly observed and the convolutional neural network-based MNIST recognition rate of 87.2 % after 60,000 training is demonstrated by using the proposed IGZO TFTs. Stable synaptic behavior can be explained by the potentiation/depression pulse-dependent movement of hydrogens which the Al2O3 GI contains during LT ALD. Furthermore, it is found that the synaptic weight can be controlled and optimized by changing the thickness of Al2O3 GI.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129042787","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}
{"title":"A Novel 5-DOF Flexure-based Passive Alignment Stage for Microassembly System","authors":"Shasha Chen, Weihai Chen, Jingmeng Liu, Wenjie Chen","doi":"10.1109/NANO46743.2019.8993682","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993682","url":null,"abstract":"In order to avoid the damage of collision between the assembly targets during microassembly, a new 5-degree- of-freedom (5-DOF) fleuxre-based passive alignment stage for microassembly system is presented. With fiber assembly as the application field, the design, modeling and simulation of the proposed stage are proposed. The proposed stage mainly consists of a 3-DOF in-plane mechanism and a 2-DOF off-plane mechanism. The alignment motion of the stage is achieved by adopting a variety of flexure hinges. Due to the remote center of compliance (RCC) characteristic, the proposed stage can compensate position error in different directions decoupleably. In order to guarantee successful fiber assembly process, the stiffness of the proposed stage is strictly controlled. The pseudorigid-body-model (PRBM) method is utilized to calculate the stiffness of the stage along its working directions. Then the finite element analysis (FEA) is conducted to verify the stiffness theoretical model and test the dynamic performance of the stage. Both the theoretical and FEA results demonstrate the superior property of the design, which indicates that the proposed stage can meet the requirements for compensating the relative position error between the fiber and the optical switch.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126483831","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}
{"title":"Rapid Quantitative Detection of Salmonella spp. via Magnetic Beads-based Fluorescent Lateral Flow Immunoassay*","authors":"L. Zhuang, J. Gong, Yongxin Ji, N. Gu, Yu Zhang","doi":"10.1109/NANO46743.2019.8993906","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993906","url":null,"abstract":"Polymerase chain reaction (PCR) plays an increasingly important role in microbial detection. However, the existing methods are difficult to be widely applied due to factors such as instruments, reagents, and experimental conditions. In this study, we developed a robust and reliable fluorescent lateral flow immunoassay combined with polymerase chain reaction (PCR-LFIA) based on magnetic beads purification for rapid detection of Salmonella app. The PCR-LFIA assay can avoid false positives caused by primer dimers. The sensitivity of PCR-LFIA method was 6×100 CFU/mL of Salmonella pure culture or 6×102 CFU/mL of artificially spiked chicken faeces. The specificity of PCR-LFIA assay was verified by eighteen Salmonella and non-Salmonella reference strains. Six of the eighty-five (7.1%) samples collected were positive by PCR-LFIA assay and the results were further confirmed by biochemical characteristics. This assay allows quantitative detection of Salmonella with a cutoff value of 175 and can be completed in 80 minutes. In conclusion, the optimized PCR-LFIA method can potentially serve as an effective diagnostic tool for timely response to disease outbreaks.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121228563","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}
F. Loghin, Marco R. Bobinger, A. Rivadeneyra, M. Becherer, P. Lugli
{"title":"Flexible Carbon Nanotube Sensors with Screen Printed and Interdigitated Electrodes","authors":"F. Loghin, Marco R. Bobinger, A. Rivadeneyra, M. Becherer, P. Lugli","doi":"10.1109/NANO46743.2019.8993685","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993685","url":null,"abstract":"Printed electronics is a rapidly emerging field due to the development of new types of functional materials and inks that can be deposited using well-known and widely established printing techniques. Commonly, sensor structures or interconnects on printed circuit boards (PCBs) are fabricated using wet etching and photolithography steps. To overcome the limitations of those techniques, in this contribution, we use a simple and scalable screen printing process to deposit silver-flake based interdigitated electrode (IDE) structures onto sprayed carbon nanotube (CNT) films. The silver (Ag) structures show a low sheet resistance and resistivity of 0.14 Ω/sq. and 6.1∙10-7 Ω∙m, respectively, at a thickness of around 4.4 µm. Attributed to its flexibility and robustness, a polyimide foil (Kapton®HN) was selected as the substrate. The CNT films with printed IDE that are entirely fabricated in the ambient air are then characterized as resistive gas sensors to detect ammonia (NH3). A high response of around 20% is achieved for an NH3 concentration of 50 ppm.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116738023","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}
{"title":"Analysis of Thermal Treatment Influence on Graphene Oxide Thin Film Deposited by Modified Coating Process","authors":"Xiaoxu Kang, Hanwei Lu, Bo Zhang, Xiaozhi Kang, Ruoxi Shen, Xiaolan Zhong, Ming Li, Shoumian Chen, Yuhang Zhao, Shanshan Liu, Li-Min Zhu","doi":"10.1109/NANO46743.2019.8993917","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993917","url":null,"abstract":"Graphene Oxide (GO) is made up of single or several closely-spaced graphene sheets with plenty of functional group, and can be considered as insulator. Recently GO material is attracting more and more interest for gas sensor application because of its excellent properties. In this work, GO dispersion was prepared by dispersing high-purity GO nanosheets into water. Isopropyl alcohol (IPA) and related solvent were used to adjust its viscosity and surface tension. Modified coating process was developed to get a more uniform GO thin film. After GO film deposition, it was then annealed to remove the residue solvent and make the film stable. Thickness uniformity was checked by Cross-Sectional SEM. For 2 inch wafer sample, 1 sigma of within wafer GO film uniformity can reach to less than 3 percent by modified coating process. XRD was used to check influence of different annealing condition on GO film. As shown in XRD data, 2Theta value of XRD peak angle was increasing with increasing temperature and time. According to Bragg’s law, 2theta value is inversely proportional to lattice distance, and increasing of 2theta value means decreasing of GO film layer distance, which may indicate the decomposition and loss of oxygen-contained functional group.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124985082","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}
E. Casals, Muling Zeng, M. Parra, G. Fernández-Varo, W. Jiménez, V. Puntes, G. Casals
{"title":"Catalytic Cerium Oxide Nanoparticles in Nanomedicine and Their Use in Liver Diseases","authors":"E. Casals, Muling Zeng, M. Parra, G. Fernández-Varo, W. Jiménez, V. Puntes, G. Casals","doi":"10.1109/NANO46743.2019.8993918","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993918","url":null,"abstract":"In this work, we aim to provide a better understanding on how to analyze the results obtained using Cerium Oxide (CeO2) nanoparticles for medical applications while showing some results for the case of liver disease. Thus, the manuscript is divided in two main sections. First, we discuss the bibliography of the safety aspects of the use of Cerium Oxide for medicine, since we have seen discrepancies between reports on its proven anti-inflammatory activity together with other reporting toxicity. The evolution of the nanoparticles inside the body make several parameters, such as aggregation state or surface evolutions, as critical determinants that need to be carefully addressed to better understand their potential clinical benefits. Second, we show the usefulness of enhancing the stability of CeO2 nanoparticles in the physiological media for the treatment of liver diseases. Liver is the organ where nanoparticles passively accumulate and thus, a logical place to start the studies of the in vivo evolution and activity of this material.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114695709","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}
{"title":"Reliable and Accurate MEMS-based Thermal Conductivity Characterization Device for Individual Nanowires","authors":"Yan-Li Cui, Yang Yang, Tie Li, Yuelin Wang","doi":"10.1109/NANO46743.2019.8993895","DOIUrl":"https://doi.org/10.1109/NANO46743.2019.8993895","url":null,"abstract":"Precision measurement of thermal conductivity at nanoscale can facilitate the study of the pursuing thermoelectric conversion efficiency. In this work, a new reliable and accurate MEMS-based device for thermal conductivity measurement of individual nanowires was developed. Overcoming the difficulties in measuring small temperature rise at nanoscale, the measurement error of temperature rise for nanomaterials was less than 0.1360%. Besides, the effect of substrate conduction, air heat conduction and radiation heat loss on testing of thermal conductivity was basically ruled out. The thermal conductivity of VO2 (M) single crystal nanowire with diameter of 294 nm was measured to verify the reliability and accuracy of the device.","PeriodicalId":365399,"journal":{"name":"2019 IEEE 19th International Conference on Nanotechnology (IEEE-NANO)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114795601","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}