Pub Date : 2018-07-01DOI: 10.1109/NANO.2018.8626341
R. E. Jimenez, Nile J. Bunce, Harsha Kannan, J. Xiao, R. Gupta, Shashi P. Kama
Water soluble Fe nanoclusters in the size ranging from 1.4 to 5 nm, exhibiting photoemission in the visible $(lambda_{text{em}}=450 text{nm})$ and near-infrared region $(lambda_{text{em}}=845 text{nm})$ have been synthesized with the use of mixed proteins. The protein-templated Fe nanoclusters exhibit superparamagnetism at room temperature, offering potential applications in bio-labeling and imaging.
{"title":"Protein-Templated Near-Infrared Emitting Fe Nanoclusters Exhibit Superparamagnetism at Room Temperature","authors":"R. E. Jimenez, Nile J. Bunce, Harsha Kannan, J. Xiao, R. Gupta, Shashi P. Kama","doi":"10.1109/NANO.2018.8626341","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626341","url":null,"abstract":"Water soluble Fe nanoclusters in the size ranging from 1.4 to 5 nm, exhibiting photoemission in the visible $(lambda_{text{em}}=450 text{nm})$ and near-infrared region $(lambda_{text{em}}=845 text{nm})$ have been synthesized with the use of mixed proteins. The protein-templated Fe nanoclusters exhibit superparamagnetism at room temperature, offering potential applications in bio-labeling and imaging.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123801279","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 : 2018-07-01DOI: 10.1109/NANO.2018.8706512
Anand Kumar
Combustion synthesis has been used for a long time for synthesizing functional materials suitable for many applications such as ceramics, electronics, pigments, catalysts etc. In this paper we introduce an emerging field of nanomaterials synthesis, known as "Cellulose Assisted Combustion Synthesis (CACS)" technique. In this technique, an aqueous solution of metal nitrate and a reducing agent is impregnated on a thin cellulose paper to enhance heat transfer effects during the synthesis process. The paper is dried and locally ignited at one end to start a combustion reaction that is self-sustained, and under optimum loading of the reactive solution, can continuously produce nanoparticles with high surface area. The thin film helps in generating a quenching effect and limits nanoparticles sintering in post-combustion stages. This paper summarizes the synthesis of transition metals and their alloys that have shown exceptional catalytic performance for energy conversion applications such as ethanol hydrogen production and fuel cell applications. A summary of reported mechanistic study on selected reactions will be provided in future correspondences to understand the reaction pathway followed on the catalyst surfaces
{"title":"Cellulose assisted combustion synthesis of nanomaterials for energy conversion applications","authors":"Anand Kumar","doi":"10.1109/NANO.2018.8706512","DOIUrl":"https://doi.org/10.1109/NANO.2018.8706512","url":null,"abstract":"Combustion synthesis has been used for a long time for synthesizing functional materials suitable for many applications such as ceramics, electronics, pigments, catalysts etc. In this paper we introduce an emerging field of nanomaterials synthesis, known as \"Cellulose Assisted Combustion Synthesis (CACS)\" technique. In this technique, an aqueous solution of metal nitrate and a reducing agent is impregnated on a thin cellulose paper to enhance heat transfer effects during the synthesis process. The paper is dried and locally ignited at one end to start a combustion reaction that is self-sustained, and under optimum loading of the reactive solution, can continuously produce nanoparticles with high surface area. The thin film helps in generating a quenching effect and limits nanoparticles sintering in post-combustion stages. This paper summarizes the synthesis of transition metals and their alloys that have shown exceptional catalytic performance for energy conversion applications such as ethanol hydrogen production and fuel cell applications. A summary of reported mechanistic study on selected reactions will be provided in future correspondences to understand the reaction pathway followed on the catalyst surfaces","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124196523","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626324
S. Kim, J. Weldon
The objective of this work is to model and simulate molecule transport in a novel AND nanofluidic logic gate. A nanochannel was placed between two reservoirs with asymmetric target molecule concentration, controlled by independent electrical gates at both openings. When the dimension of the fluidic channel was comparable to the thickness of the electrical double layer (EDL), the potential generated by gating became significant, which allowed for control of charged molecule diffusion through the nanochannel modulated by electrostatic repulsion and attraction. Using two independent gates, the simulations show that the stacked gate structure implemented a nanofluidic AND logic gate for the charged molecule transport. The gated nanochannel structures were modeled in the finite element software (COMSOL Multiphysics).
{"title":"Modeling of a Stacked Gated Nanofluidic Channel","authors":"S. Kim, J. Weldon","doi":"10.1109/NANO.2018.8626324","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626324","url":null,"abstract":"The objective of this work is to model and simulate molecule transport in a novel AND nanofluidic logic gate. A nanochannel was placed between two reservoirs with asymmetric target molecule concentration, controlled by independent electrical gates at both openings. When the dimension of the fluidic channel was comparable to the thickness of the electrical double layer (EDL), the potential generated by gating became significant, which allowed for control of charged molecule diffusion through the nanochannel modulated by electrostatic repulsion and attraction. Using two independent gates, the simulations show that the stacked gate structure implemented a nanofluidic AND logic gate for the charged molecule transport. The gated nanochannel structures were modeled in the finite element software (COMSOL Multiphysics).","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114068147","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626406
L. Jäppinen, T. Higuchi, H. Huhtinen, P. Paturi, J. Salonen
We have used a thermal acetylene treatment on ZnO nanorods in order to investigate the possibility of carbon-doping-induced room temperature ferromagnetism in them. The properties of the rods were investigated using SQUID magnetometry and photoelectron spectroscopy and the findings compared to previously reported results. Ferromagnetism was detected in all investigated samples, but no clear correlation between acetylene and the strength of ferromagnetism was observed. A weakening of the hybridization of Zn 3d and O 2p states as a result of acetylene treatment was detected. The coercivity of acetylene-doped samples was observed to be higher than in annealed samples. The findings support the view that ferromagnetism in ZnO is intrinsic in origin and not caused by carbon doping. However, the treatment can still be used to engineer the magnetic properties of the material, as it can tune its surface properties.
{"title":"Increasing coercivity of ferromagnetic zinc oxide with thermal acetylene treatment","authors":"L. Jäppinen, T. Higuchi, H. Huhtinen, P. Paturi, J. Salonen","doi":"10.1109/NANO.2018.8626406","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626406","url":null,"abstract":"We have used a thermal acetylene treatment on ZnO nanorods in order to investigate the possibility of carbon-doping-induced room temperature ferromagnetism in them. The properties of the rods were investigated using SQUID magnetometry and photoelectron spectroscopy and the findings compared to previously reported results. Ferromagnetism was detected in all investigated samples, but no clear correlation between acetylene and the strength of ferromagnetism was observed. A weakening of the hybridization of Zn 3d and O 2p states as a result of acetylene treatment was detected. The coercivity of acetylene-doped samples was observed to be higher than in annealed samples. The findings support the view that ferromagnetism in ZnO is intrinsic in origin and not caused by carbon doping. However, the treatment can still be used to engineer the magnetic properties of the material, as it can tune its surface properties.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116255679","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626294
F. S. Torres, Marcel Walter, R. Wille, Daniel Große, R. Drechsler
Proper synchronization in clocked Field-Coupled Nanocomputing (FCN) circuits is a fundamental problem. In this work, we show for the first time that global synchronicity is not a mandatory requirement in clocked FCN designs and discuss the considerable restrictions that global synchronicity presents for sequential and large-scale designs. Furthermore, we propose a solution that circumvents design restrictions due to synchronization requirements and present a novel RS-latch.
{"title":"Synchronization of Clocked Field-Coupled Circuits","authors":"F. S. Torres, Marcel Walter, R. Wille, Daniel Große, R. Drechsler","doi":"10.1109/NANO.2018.8626294","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626294","url":null,"abstract":"Proper synchronization in clocked Field-Coupled Nanocomputing (FCN) circuits is a fundamental problem. In this work, we show for the first time that global synchronicity is not a mandatory requirement in clocked FCN designs and discuss the considerable restrictions that global synchronicity presents for sequential and large-scale designs. Furthermore, we propose a solution that circumvents design restrictions due to synchronization requirements and present a novel RS-latch.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116375376","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626233
Wei-Chuan Shih, F. Zhao, Masud Arnob
We review our recent progress in surface-enhanced Raman scattering (SERS) biomolecular sensing on substrate-bound nanoporous gold (NPG) nanoparticles arrays which feature large surface area, tunable plasmonics, and high-density localization of enhanced electric field. This type of SERS substrate has been shown to provide superior performance in terms of ultrahigh sensitivity and reliable specificity for robust detection.
{"title":"Label-free Biomolecular Sensing by SERS on Nanoporous Gold Nanoparticle Arrays","authors":"Wei-Chuan Shih, F. Zhao, Masud Arnob","doi":"10.1109/NANO.2018.8626233","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626233","url":null,"abstract":"We review our recent progress in surface-enhanced Raman scattering (SERS) biomolecular sensing on substrate-bound nanoporous gold (NPG) nanoparticles arrays which feature large surface area, tunable plasmonics, and high-density localization of enhanced electric field. This type of SERS substrate has been shown to provide superior performance in terms of ultrahigh sensitivity and reliable specificity for robust detection.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127578891","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626325
K. Kawaguchi, T. Takahashi, N. Okamoto, M. Sato, M. Suhara
Type-II GaAsSb/InAs nanowires (NWs) were grown using a position-controlled vapor-liquid-solid method. A change in shape of GaAsSb segments with Sb content was revealed. By controlling the group-V sources, GaAsSb segments that satisfied the criteria of tunnel junctions were achieved, and p-type Zn doping for GaAsSb segments was confirmed in the range of $10^{18}-10^{19} text{cm}^{-3}$. Moreover, conductive type of p-n NWs was confirmed using the scanning capacitance microscopy technique. These results are promising for the development of NWs suitable for vertical nanoscale tunnel devices.
{"title":"Type-II p-GaAsSb/n-InAs Nanowires under Conditions for Tunnel Junction Formation","authors":"K. Kawaguchi, T. Takahashi, N. Okamoto, M. Sato, M. Suhara","doi":"10.1109/NANO.2018.8626325","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626325","url":null,"abstract":"Type-II GaAsSb/InAs nanowires (NWs) were grown using a position-controlled vapor-liquid-solid method. A change in shape of GaAsSb segments with Sb content was revealed. By controlling the group-V sources, GaAsSb segments that satisfied the criteria of tunnel junctions were achieved, and p-type Zn doping for GaAsSb segments was confirmed in the range of $10^{18}-10^{19} text{cm}^{-3}$. Moreover, conductive type of p-n NWs was confirmed using the scanning capacitance microscopy technique. These results are promising for the development of NWs suitable for vertical nanoscale tunnel devices.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126377046","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626354
S. Schierle, N. Straub, P. Woias, F. Goldschmidtböing
Silver nanowires are used as a flexible electrode material on the elastic PDMS membrane of an electrostatic membrane actuator. The actuator system is designed in a modular way to promote a facile investigation of the influence of varying design parameters. Parameter simulations have been performed to achieve a high membrane center displacement at low applied voltages, compared to literature. The design properties were tested and verified in first experiments showing a membrane center displacement of over 100 $mu mathrm{m}$ at voltages above 4 kV [7].
{"title":"Sub Kilovolt Electrostatic Elastomer Actuator with Silver Nanowire Electrodes","authors":"S. Schierle, N. Straub, P. Woias, F. Goldschmidtböing","doi":"10.1109/NANO.2018.8626354","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626354","url":null,"abstract":"Silver nanowires are used as a flexible electrode material on the elastic PDMS membrane of an electrostatic membrane actuator. The actuator system is designed in a modular way to promote a facile investigation of the influence of varying design parameters. Parameter simulations have been performed to achieve a high membrane center displacement at low applied voltages, compared to literature. The design properties were tested and verified in first experiments showing a membrane center displacement of over 100 $mu mathrm{m}$ at voltages above 4 kV [7].","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130797823","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626340
M. Nolan, S. Rhatigan, W. Daly, Marco Fronzi
We present density functional theory simulations of novel heterostructures composed of $text{TiO}_{2}$ rutile and anatase modified with nanoclusters of $text{Bi}_{2}mathrm{O}_{3}, text{Cr}_{2}mathrm{O}_{3}$ and $text{ZrO}_{2}$. These heterostructures are shown to adsorb and activate CO2; this is characterised by strong adsorption energies, a bending of the CO2 molecule and elongation of C-O distances in the molecule.
{"title":"Design of Photocatalysts for CO2 Reduction from First Principles","authors":"M. Nolan, S. Rhatigan, W. Daly, Marco Fronzi","doi":"10.1109/NANO.2018.8626340","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626340","url":null,"abstract":"We present density functional theory simulations of novel heterostructures composed of <tex>$text{TiO}_{2}$</tex> rutile and anatase modified with nanoclusters of <tex>$text{Bi}_{2}mathrm{O}_{3}, text{Cr}_{2}mathrm{O}_{3}$</tex> and <tex>$text{ZrO}_{2}$</tex>. These heterostructures are shown to adsorb and activate CO<inf>2</inf>; this is characterised by strong adsorption energies, a bending of the CO<inf>2</inf> molecule and elongation of C-O distances in the molecule.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130988042","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 : 2018-07-01DOI: 10.1109/NANO.2018.8626290
T. Kraft, M. Kujala, A. Railanmaa, S. Lehtimäki, T. Kololuoma, J. Keskinen, D. Lupo, M. Mantvsalo
In this study, we propose a highly flexible environmentally friendly supercapacitor suitable for low-power Internet-of- Everything applications and the effect of bending (both static and cyclic) on its electrical performance. The supercapacitors are all comprised of carbon electrodes (activated carbon (AC) on a graphite current collector) printed on a flexible plastic substrate, with a NaCl (aq) electrolyte. The capacitance of all the devices is on the order of 0.3 F. Two different substrates (A1 coated PET and PP/PA/EVOH/PA/PE [PP-PE]) as well as two different top-bottom substrate sealing methods (heat sealing, adhesive film) were investigated, with the PP-PE substrate and adhesive film sealing found to be preferable. However, all supercapacitors exhibited a rather high tolerance for bending down to a 1.25 cm radius. Little effect on bending reliability was found on the electrode fabrication process (roll-to-roll (R2R) vs. screen printing and manual stencil printing), however R2R printed devices have a higher uniformity of electrical properties. It was confirmed that, if the sealing method is resilient to bending, the degradation of the printed films are not the limiting factor in device flexibility.
{"title":"Highly Flexible Environmentally friendly Printed Supercapacitors","authors":"T. Kraft, M. Kujala, A. Railanmaa, S. Lehtimäki, T. Kololuoma, J. Keskinen, D. Lupo, M. Mantvsalo","doi":"10.1109/NANO.2018.8626290","DOIUrl":"https://doi.org/10.1109/NANO.2018.8626290","url":null,"abstract":"In this study, we propose a highly flexible environmentally friendly supercapacitor suitable for low-power Internet-of- Everything applications and the effect of bending (both static and cyclic) on its electrical performance. The supercapacitors are all comprised of carbon electrodes (activated carbon (AC) on a graphite current collector) printed on a flexible plastic substrate, with a NaCl (aq) electrolyte. The capacitance of all the devices is on the order of 0.3 F. Two different substrates (A1 coated PET and PP/PA/EVOH/PA/PE [PP-PE]) as well as two different top-bottom substrate sealing methods (heat sealing, adhesive film) were investigated, with the PP-PE substrate and adhesive film sealing found to be preferable. However, all supercapacitors exhibited a rather high tolerance for bending down to a 1.25 cm radius. Little effect on bending reliability was found on the electrode fabrication process (roll-to-roll (R2R) vs. screen printing and manual stencil printing), however R2R printed devices have a higher uniformity of electrical properties. It was confirmed that, if the sealing method is resilient to bending, the degradation of the printed films are not the limiting factor in device flexibility.","PeriodicalId":425521,"journal":{"name":"2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131121881","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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