{"title":"Large scale synthetic method for free standing graphene film and graphene sponges","authors":"Fei Liu, T. Seo","doi":"10.1109/NANO.2010.5697936","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697936","url":null,"abstract":"He re we present a simple method to prepare large-scale graphene sponges and free-standing graphene films using a speed vacuum concentrator. During a centrifugal evaporation process, suspended graphene oxide (GO) sheets in an aqueous solution have been assembled to generate network-linked GO sponges or a series of multilayer GO films depending on the temperature of a centrifugal vacuum chamber. While sponge-like bulk GO materials (GO sponges) have been produced at 40 °C, uniform free-standing GO films which size were up to 9 cm2 were generated at 80 °C. The thickness of GO films can be controlled from 200 nm to 1 µm based on the concentration of the GO colloidal suspension and evaporation temperature. The synthesized GO films exhibit high flexibility with a smooth surface and condensed density. Reduced GO sponges and films have been produced through a thermal annealing process at 800°C with H2/Ar flow. Scanning electron microscope (SEM), High resolution transmission electron microscope (HRTEM) and x-ray photoelectron spectroscope (XPS) were employed to charaterize the reduced GO sponges and films.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114729478","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":"Charge transfer mechanism from quantum dot to carbon nanotube","authors":"Chang-Soo Han, Sohee Jeong, H. Shim","doi":"10.1109/NANO.2010.5697844","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697844","url":null,"abstract":"We successfully assembled individual carbon nanotube (CNT) on the electrode as well as quantum dots (QDs) on the CNT by using dielectrophoretic force twice. For chemical bonding between CNT and QD, pyridine molecules are used. Charges generated from photo excitation of QD transported to the CNT, and then we measured the current change. It was observed that CNT played role of excellent conduit for charge transfer. When we used several sizes of QDs, absorption bandwidth of the optical device was determined by the emission wavelength of QD.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117093282","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}
A. B. Garmarudi, M. Khanmohammadi, N. Khoddami, K. Shabani
{"title":"Near infrared spectrometric analysis of titanium dioxide nano particles for size classification","authors":"A. B. Garmarudi, M. Khanmohammadi, N. Khoddami, K. Shabani","doi":"10.1109/NANO.2010.5697778","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697778","url":null,"abstract":"Determination of nano particle size is substantial since the nano particle size exerts a significant effect on various properties of nano materials. Proposing non-destructive, accurate and rapid techniques for analytical aims is of high interest. In this research the relationship between particle size and diffuse reflectance (DR) spectra in near infrared region has been applied to introduce a method for estimation of particle size. Back propagation artificial neural network (BP-ANN) as a nonlinear model was applied to estimate average particle size based on near infrared diffuse reflectance spectra. Thirty five different nano TiO2 samples with different particle size were analyzed by DR-FTNIR spectrometry and the obtained data were processed by BP- ANN. The network was trained by 30 samples and was evaluated by remaining 5 samples. In order to establish whether the new method is applicable for estimation of particle size of nano structured samples, the optimized model was applied to analyze 44 nano TiO2 samples. It was observed that ANN using the back-propagation algorithm is capable of generalization and could correctly predict the average particle size of nano-sized particles.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123476309","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":"Non-Volatile semiconductor memories for nano-scale technology","authors":"F. Pellizzer, R. Bez","doi":"10.1109/NANO.2010.5697736","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697736","url":null,"abstract":"In this paper we will review the evolution of Non-Volatile Memories (NVM) through the last decades, driven by a continuous introduction of new materials that helped the reduction of the single cell area and so the cost of the memory. As we entered into the sub-20nm realm, limitations are appearing for Flash memories and alternative physical mechanisms are proposed to store information in high density media. In this scenario, Phase Change Memory (PCM) is demonstrating the capability to enter the broad memory market and to become a mainstream technology.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"48 32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124222476","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}
O. Nuchuchua, W. Sajomsang, Pattarapond Gonil, Nuttaporn Pimphd, S. Chaleawlert-umpon, I. Sramala, Somsak Saesoo, A. Soottitantawat, U. Ruktanonchai
{"title":"Synthesis and characterization of ²-cyclodextrin-grafted chitosan derivatives on its mucoadhesion and antibacterial activities","authors":"O. Nuchuchua, W. Sajomsang, Pattarapond Gonil, Nuttaporn Pimphd, S. Chaleawlert-umpon, I. Sramala, Somsak Saesoo, A. Soottitantawat, U. Ruktanonchai","doi":"10.1109/NANO.2010.5698027","DOIUrl":"https://doi.org/10.1109/NANO.2010.5698027","url":null,"abstract":"The aims of this study were to synthesize and determine the biological activities of two types of water-soluble βCD-grafted chitosan derivatives; βCD-grafted chitosan with spacer (QCDCA22-g-CS) and βCD-grafted chitosan without spacer (QCD23-g-CS) as a novel biomaterial for mucosal delivery. Difference in their chemical structure were defined by 1H-NMR According to mucin particle method, QCD23-g-CS showed stronger mucoadhesion towards mucin. Although both QCDCA22-g-CS and QCD23-g-CS demonstrated high antibacterial activity towards Candida albicans at 24 hours, QCD23-g-CS demonstrated much higher activity than QCDCA22-g-CS.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125181561","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}
Yajing Shen, M. Ahmad, M. Nakajima, S. Kojima, M. Homma, T. Fukuda
{"title":"Cell-cell adhesion force measurement using nano picker via nanorobotic manipulators inside ESEM","authors":"Yajing Shen, M. Ahmad, M. Nakajima, S. Kojima, M. Homma, T. Fukuda","doi":"10.1109/NANO.2010.5697834","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697834","url":null,"abstract":"Cell-cell adhesion force is important for cell activities. In this paper, a novel cell-cell adhesion force measurement method using nano picker was proposed based on the nanorobotic manipulation system inside an environmental scanning electron microscopy (ESEM). The nano picker was fabricated from atomic force microscopy(AFM) cantilever by focused ion beam(FIB) etching. The spring constant of the nano picker was calibrated by nano manipulation approach. The cell which was selected for adhesion force measurement was first positioned on the top of another cell by a micro probe. Then, the nano picker was inserted to the join area between the two cells. Finally, the nano picker lifted the top cell by the actuating of nano manipulator inside environmental scanning electron microscopy ESEM. The cell-cell adhesion force can be measured based on the deflection of the cantilever during the cell separation. This method allowed the observation and manipulation of cell at nano scale simultaneously. Study of cell adhesion will benefit the understanding the mechanism of cell spreading, proliferation and so on.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125206661","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":"Structural property of boron-doped double-walled carbon nanotubes","authors":"S. Lyu, Kitae Ahn, Jonghun Han, K. Shin, J. Sok","doi":"10.1109/NANO.2010.5697934","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697934","url":null,"abstract":"The doping of CNTs with boron appears promising in view of the changes brought about in the electronic structures by these dopants. The substitution of boron atom in carbon network gives rise to p-type doping. In this communication, we demonstrate the synthesis of high-quality boron doped DWCNTs by catalytic decomposition of tetra hydro furan (THF) and triisopropyl borate over Fe-Mo/MgO catalyst at 900 °C. In order to achieve in-situ boron doping and growth for DWCNTs, we controlled concentration of boron precursors by passing the Ar gas through the bubbler, which contained liquid triisopropyl borate/methanol. We also evaluate structural properties and doping effect of DWCNTs from the TEM and Raman results.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129781916","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":"Nanosmile website on nanosafety training, Education and public dialogue issues","authors":"Y. Sicard, F. Tardif","doi":"10.1109/NANO.2010.5698082","DOIUrl":"https://doi.org/10.1109/NANO.2010.5698082","url":null,"abstract":"This paper deals with communication strategy on emerging risk situations. The lessons learnt from the French National Debate on nanotechnolgy highlight Nanosmile options taken in order to support public dialogue. Users feed back is discussed, then Nanosmile perspectives are presented.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116038052","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":"Confined phonons effects, phonon-carrier interactions and thermal transport in graphene-based structures","authors":"Jun Qian, K. Sun, M. Dutta, M. Stroscio","doi":"10.1109/NANO.2010.5697806","DOIUrl":"https://doi.org/10.1109/NANO.2010.5697806","url":null,"abstract":"Recently graphene has been studied in view of its promise as a material for high-performance electronics. In order to advance the basic understanding of graphene and graphite for graphene-based devices it is necessary to study the phonon modes in these materials as well as their interactions with charge carriers. Moreover, it is necessary to understand the phonon-based thermal properties of these structures; herein, the thermal conductivity is modeled for selected graphene-based structures of finite size. In addition, phonon engineering in finite-sized graphene-based structures will be considered. Models of confined phonon modes will be presented for finite-sized graphene structures. Additionally, the role of phonon confinement in carrier-phonon interactions will be considered in confined phonons in graphene sheets of finite size. As indicated previously, quantum confinement effects are included [1,2] by using previous models for graphene-based structures [3–12]. This presentation will place special emphasis on the deformation potential interaction between confined LO-phonon modes and charge carriers in finite-sized graphene structures of potential interest in nanoscale devices.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122351210","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":"Compact ZnO nanorods composed film by re-growth of ZnO nanorods and Ar plasma treatment","authors":"Wen-Hau Wu, C. Chao, S. Hung, Ching-Fuh Lin","doi":"10.1109/NANO.2010.5698061","DOIUrl":"https://doi.org/10.1109/NANO.2010.5698061","url":null,"abstract":"Compact, film-like ZnO nanorods were fabricated by re-growth of ZnO nanorods on base ZnO nanorods using a simple low-temperature hydrothermal technique. The Ar plasma treatment was employed to blur the boundaries of re-grown ZnO nanorods. The morphology, crystalline and electrical properties of both re-grown and Ar plasma treated re-grown ZnO nanorods were studied by SEM, AFM, XRD, and four point probe measurement. The SEM images and AFM analysis revealed the increasing diameter and compact arrangement of re-grown ZnO nanorods. The XRD analysis showed highly uniform [002] orientation. The resistivity of re-grown ZnO nanorods composed film is 3.906Ω*cm while resistivity of re-grown ZnO nanorods composed film with Ar plasma treatment is 2.231Ω*cm which indicates that the Ar plasma treatment blurred the boundaries therefore decreasing the resistivity. The optical transmittance of as-grown and re-grown ZnO nanorods in the visible range was higher than 80%.","PeriodicalId":254587,"journal":{"name":"10th IEEE International Conference on Nanotechnology","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127125170","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}