Pub Date : 2008-10-07DOI: 10.1109/ICONN.2008.4639275
Jingxian Yu, S. Mathew, B. Flavel, J. Quinton, M. Johnston, J. Shapter
Ruthenium porphyrin functionalised single-walled carbon nanotube arrays have been prepared using coordination of the axial position of the metal ion onto 4-aminopyridine pre-assembled single-walled carbon nanotubes directly anchored to a silicon(100) surface (SWCNTs-Si). The formation of these ruthenium porphyrin functionalised single-walled carbon nanotube array electrodes (RuTPP-SWCNTs-Si) has been monitored using infra-red spectroscopy (IR), differential pulse voltammetry (DPV), and cyclic voltammetry. Mixed assembly of ferrocene/porphyrin onto carbon nanotube arrays has been achieved by altering the ratio of two redox-active species in the deposition solution. These results suggest these ruthenium porphyrin modified electrodes are excellent candidates for molecular memory devices.
{"title":"Mixed assembly of ferrocene/porphyrin onto carbon nanotube arrays towards multibit information storage","authors":"Jingxian Yu, S. Mathew, B. Flavel, J. Quinton, M. Johnston, J. Shapter","doi":"10.1109/ICONN.2008.4639275","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639275","url":null,"abstract":"Ruthenium porphyrin functionalised single-walled carbon nanotube arrays have been prepared using coordination of the axial position of the metal ion onto 4-aminopyridine pre-assembled single-walled carbon nanotubes directly anchored to a silicon(100) surface (SWCNTs-Si). The formation of these ruthenium porphyrin functionalised single-walled carbon nanotube array electrodes (RuTPP-SWCNTs-Si) has been monitored using infra-red spectroscopy (IR), differential pulse voltammetry (DPV), and cyclic voltammetry. Mixed assembly of ferrocene/porphyrin onto carbon nanotube arrays has been achieved by altering the ratio of two redox-active species in the deposition solution. These results suggest these ruthenium porphyrin modified electrodes are excellent candidates for molecular memory devices.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130791761","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639231
D. Baowan, B. Cox, J.M. Hill
This paper is a synopsis of the two least squares approaches developed in the work of Baowan et al. (2007) for the perpendicular joining of a flat graphene sheet with a carbon nanotube. The two least squares approaches are the variation in the bond length and the variation in the bond angle. These are used to examine the joined structure of a zigzag (8,0) carbon nanotube with a flat graphene sheet. There are sixteen possible distinct defects corresponding to the number of atoms at the (8,0) tube open end, and therefore, in total sixteen joining structures need to be investigated. Moreover, the polygons that occur at the junction are determined and are shown to be consistent with Eulerpsilas theorem. Assuming that only pentagons, hexagons and heptagons are acceptable, the number of possible structures is greatly reduced, but there is only one structure that is physically meaningful. These purely geometrical approaches can be formally related directly to a certain numerical energy minimization method used by a number of authors (Cornell et al., 1995).
本文概述了Baowan等人(2007)开发的两种最小二乘方法，用于平面石墨烯片与碳纳米管的垂直连接。两种最小二乘方法分别是键长变化和键角变化。这些被用来检查锯齿形(8,0)碳纳米管与扁平石墨烯片的连接结构。与(8,0)管开口端的原子数相对应，有16种可能的不同缺陷，因此，总共有16种连接结构需要研究。此外，还确定了出现在交接处的多边形，并证明了它们与欧拉塞拉斯定理是一致的。假设只有五边形、六边形和七边形是可以接受的，那么可能的结构数量就大大减少了，但只有一种结构在物理上是有意义的。这些纯粹的几何方法可以与一些作者使用的某种数值能量最小化方法直接相关(Cornell et al.， 1995)。
{"title":"Joining a carbon nanotube and a graphene sheet","authors":"D. Baowan, B. Cox, J.M. Hill","doi":"10.1109/ICONN.2008.4639231","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639231","url":null,"abstract":"This paper is a synopsis of the two least squares approaches developed in the work of Baowan et al. (2007) for the perpendicular joining of a flat graphene sheet with a carbon nanotube. The two least squares approaches are the variation in the bond length and the variation in the bond angle. These are used to examine the joined structure of a zigzag (8,0) carbon nanotube with a flat graphene sheet. There are sixteen possible distinct defects corresponding to the number of atoms at the (8,0) tube open end, and therefore, in total sixteen joining structures need to be investigated. Moreover, the polygons that occur at the junction are determined and are shown to be consistent with Eulerpsilas theorem. Assuming that only pentagons, hexagons and heptagons are acceptable, the number of possible structures is greatly reduced, but there is only one structure that is physically meaningful. These purely geometrical approaches can be formally related directly to a certain numerical energy minimization method used by a number of authors (Cornell et al., 1995).","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128823321","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639272
G. Lansbergen, R. Rahman, C. Wellard, P. Rutten, J. Caro, I. Woo, N. Colleart, S. Biesemans, Gerhard Klimeck, L. Hollenberg, S. Rogge
Current semiconductor devices have been scaled to such dimensions that we need take atomistic approach to understand their operation for nano-electronics. From a bottoms-up perspective, the smallest functional element within a nanodevice would be a single (dopant) atom itself. Control and understanding over the eigenenergies and wavefunctions of a single dopant could prove a key ingredient for device technology beyond-CMOS. Here, we will discuss the eigenlevels of a single As donor in a three terminal configuration. The donor is incorporated in the channel of prototype transistors called FinFETs. The measured eigenlevels are shown to consist of levels associated with the donors Coulomb potential, levels associated with a triangular well at the gate interface and hybridized combinations of the two. The theoretical framework in which we describe this system (NEMO-3D) is based on a tight-binding approximation.
{"title":"Determination of the eigenstates and wavefunctions of a single gated As donor","authors":"G. Lansbergen, R. Rahman, C. Wellard, P. Rutten, J. Caro, I. Woo, N. Colleart, S. Biesemans, Gerhard Klimeck, L. Hollenberg, S. Rogge","doi":"10.1109/ICONN.2008.4639272","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639272","url":null,"abstract":"Current semiconductor devices have been scaled to such dimensions that we need take atomistic approach to understand their operation for nano-electronics. From a bottoms-up perspective, the smallest functional element within a nanodevice would be a single (dopant) atom itself. Control and understanding over the eigenenergies and wavefunctions of a single dopant could prove a key ingredient for device technology beyond-CMOS. Here, we will discuss the eigenlevels of a single As donor in a three terminal configuration. The donor is incorporated in the channel of prototype transistors called FinFETs. The measured eigenlevels are shown to consist of levels associated with the donors Coulomb potential, levels associated with a triangular well at the gate interface and hybridized combinations of the two. The theoretical framework in which we describe this system (NEMO-3D) is based on a tight-binding approximation.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123092265","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639235
J. Cornish, R. Abdelaal
In this paper we describe the production of nanocrystallites of silicon embedded in an amorphous silicon matrix by Hot Wire CVD. Prior modification of the substrate results in a procedure for increasing the volume fraction and density of the nano-crystallites relative to the other phases. A macroscopic process, random linear grooving, applied to the substrates has been shown to have a significant affect on the structure of the thin film nano-crystalline silicon subsequently grown on these profiled substrates. This has been found to occur for samples produced under different temperature regimes resulting in crystalline fractions in the range of 10% to 80%. Analysis of the RAMAN spectra for these samples shows a reduction in the amorphous fraction while the fractions of both the crystalline material and the intermediate phase increase. Electron micrographs show increased crystallite size. The films on the modified substrates appear to be denser than the films on the smooth substrates.
{"title":"Modification of the density of crystallites in silicon nano-crystalline thin films by substrate profiling","authors":"J. Cornish, R. Abdelaal","doi":"10.1109/ICONN.2008.4639235","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639235","url":null,"abstract":"In this paper we describe the production of nanocrystallites of silicon embedded in an amorphous silicon matrix by Hot Wire CVD. Prior modification of the substrate results in a procedure for increasing the volume fraction and density of the nano-crystallites relative to the other phases. A macroscopic process, random linear grooving, applied to the substrates has been shown to have a significant affect on the structure of the thin film nano-crystalline silicon subsequently grown on these profiled substrates. This has been found to occur for samples produced under different temperature regimes resulting in crystalline fractions in the range of 10% to 80%. Analysis of the RAMAN spectra for these samples shows a reduction in the amorphous fraction while the fractions of both the crystalline material and the intermediate phase increase. Electron micrographs show increased crystallite size. The films on the modified substrates appear to be denser than the films on the smooth substrates.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114100183","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639261
M. Nussio, N. Voelcker, M. Sykes, B. Flavel, J. Miners, J. Shapter
The analysis of membrane domain segregation and phase separation is of significant interest for the understanding of cell membranes. In this paper, we report a new approach to atomic force microscopy (AFM) of artificial membranes, using both functionalised AFM tips and ldquoForce Volumerdquo AFM imaging for the analysis of membrane phase separation. Simultaneous topology and mapping of interaction forces of binary component phospholipid bilayer membranes was performed yielding novel insights into membrane structure at unprecedented resolution.
{"title":"High resolution chemical mapping of biomimetic membranes by force volume imaging","authors":"M. Nussio, N. Voelcker, M. Sykes, B. Flavel, J. Miners, J. Shapter","doi":"10.1109/ICONN.2008.4639261","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639261","url":null,"abstract":"The analysis of membrane domain segregation and phase separation is of significant interest for the understanding of cell membranes. In this paper, we report a new approach to atomic force microscopy (AFM) of artificial membranes, using both functionalised AFM tips and ldquoForce Volumerdquo AFM imaging for the analysis of membrane phase separation. Simultaneous topology and mapping of interaction forces of binary component phospholipid bilayer membranes was performed yielding novel insights into membrane structure at unprecedented resolution.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124898422","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639291
B. Priestly, M. Stebbing
This presentation addresses the potential for nanotechnology development to be derailed, or at least delayed, by unresolved concerns about health and safety issues. Findings from surveys of risk perception indicate that availability of knowledge about health risks can both inform and fuel concerns. Trust in regulatory systems is one factor which can influence community perceptions of risk, and there remain some issues about whether the regulatory systems are fully capable of identifying and managing these risks.
{"title":"Risk perception and risk communication: Is nanotechnology at the crossroads in Australia?","authors":"B. Priestly, M. Stebbing","doi":"10.1109/ICONN.2008.4639291","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639291","url":null,"abstract":"This presentation addresses the potential for nanotechnology development to be derailed, or at least delayed, by unresolved concerns about health and safety issues. Findings from surveys of risk perception indicate that availability of knowledge about health risks can both inform and fuel concerns. Trust in regulatory systems is one factor which can influence community perceptions of risk, and there remain some issues about whether the regulatory systems are fully capable of identifying and managing these risks.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127849490","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639258
T. Hilder, J.M. Hill
One important application of nanotechnology is that of drug delivery, and in particular the targeted delivery of drugs using nanotubes. A proper understanding of the encapsulation behavior of drug molecules into nanotubes is vital for the development of nanoscale drug delivery vehicles. Furthermore, there are many other materials which may form single-walled nanotubes, such as carbon, boron carbide, boron nitride and silicon, and it is also important to understand their advantages and disadvantages. This paper presents a synopsis of the recent work in which boron nitride, boron carbide and silicon nanotubes are examined as drug delivery vehicles, and their encapsulation behavior is compared to previous work of the authors on carbon nanotubes.
{"title":"Encapsulation of the anticancer drug cisplatin into nanotubes","authors":"T. Hilder, J.M. Hill","doi":"10.1109/ICONN.2008.4639258","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639258","url":null,"abstract":"One important application of nanotechnology is that of drug delivery, and in particular the targeted delivery of drugs using nanotubes. A proper understanding of the encapsulation behavior of drug molecules into nanotubes is vital for the development of nanoscale drug delivery vehicles. Furthermore, there are many other materials which may form single-walled nanotubes, such as carbon, boron carbide, boron nitride and silicon, and it is also important to understand their advantages and disadvantages. This paper presents a synopsis of the recent work in which boron nitride, boron carbide and silicon nanotubes are examined as drug delivery vehicles, and their encapsulation behavior is compared to previous work of the authors on carbon nanotubes.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128555273","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639290
S. Jeschke, N. Natho, O. Pfeiffer, C. Thomsen
Research in nanotechnology and nanosciences requires complex and expensive equipment. Thus, enhancement of access to experimental resources for a broad audience of students and distributed researchers is an important challenge for improving knowledge acquisition in these fields. Innovative methods of web-based information technology provide new approaches for realizing virtual working environments supporting the sharing of resources and boosting collaborative work between researchers. A concept for extending existing virtual knowledge spaces for the means of the technological disciplines is presented, and the integration of networked virtual laboratories and remote experiments - the ldquoCATLABS-approachrdquo - together with its subprojects NANOTEACH and NANOGRID are introduced.
{"title":"Networking resources for research and scientific education in nanoscience and nanotechnologies","authors":"S. Jeschke, N. Natho, O. Pfeiffer, C. Thomsen","doi":"10.1109/ICONN.2008.4639290","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639290","url":null,"abstract":"Research in nanotechnology and nanosciences requires complex and expensive equipment. Thus, enhancement of access to experimental resources for a broad audience of students and distributed researchers is an important challenge for improving knowledge acquisition in these fields. Innovative methods of web-based information technology provide new approaches for realizing virtual working environments supporting the sharing of resources and boosting collaborative work between researchers. A concept for extending existing virtual knowledge spaces for the means of the technological disciplines is presented, and the integration of networked virtual laboratories and remote experiments - the ldquoCATLABS-approachrdquo - together with its subprojects NANOTEACH and NANOGRID are introduced.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126195960","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 : 2008-10-07DOI: 10.1109/ICONN.2008.4639242
B. Flavel, Jingxian Yu, D. Tune, J. Shapter, J. Quinton
A variety of carbon nanotube based surface architectures are fabricated on silicon, which are ideal for use in future electronic devices.
各种基于碳纳米管的表面结构被制造在硅上，这是未来电子设备的理想选择。
{"title":"Patterned attachment of carbon nanotubes to silicon","authors":"B. Flavel, Jingxian Yu, D. Tune, J. Shapter, J. Quinton","doi":"10.1109/ICONN.2008.4639242","DOIUrl":"https://doi.org/10.1109/ICONN.2008.4639242","url":null,"abstract":"A variety of carbon nanotube based surface architectures are fabricated on silicon, which are ideal for use in future electronic devices.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121888401","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 : 2008-02-01DOI: 10.1109/iconn.2008.4639234
D. Clarke, S. Clarke, J. Matisons, G. Simon, A. Samoć, M. Samoć
The first reported examples of polyhedral oligomeric silsesquioxane (POSS) cages containing a fulleropyrrolidine species are reported herein. Monosubstituted POSS-dioxalane species were synthesized through the hydrosilylation of a silyldioxalane with mono-vinyl substituted POSS. Subsequent deprotection yielded the desired aldehyde functionality. An alternative synthetic pathway, involving the nucleophilic substitution of mono-benzyl chloride POSS with 4-hydroxybenzaldehyde yielded the desired aldehyde functionality. Each mono-aldehyde POSS was then reacted with N-methylglycine and C60 to yield the desired POSS fulleropyrrolidines. The prepared compounds were characterized by multinuclear NMR, electrospray mass spectrometry, UV-VIS, fluorescence and optical power limiting measurements.
{"title":"POSS fulleropyrrolidines","authors":"D. Clarke, S. Clarke, J. Matisons, G. Simon, A. Samoć, M. Samoć","doi":"10.1109/iconn.2008.4639234","DOIUrl":"https://doi.org/10.1109/iconn.2008.4639234","url":null,"abstract":"The first reported examples of polyhedral oligomeric silsesquioxane (POSS) cages containing a fulleropyrrolidine species are reported herein. Monosubstituted POSS-dioxalane species were synthesized through the hydrosilylation of a silyldioxalane with mono-vinyl substituted POSS. Subsequent deprotection yielded the desired aldehyde functionality. An alternative synthetic pathway, involving the nucleophilic substitution of mono-benzyl chloride POSS with 4-hydroxybenzaldehyde yielded the desired aldehyde functionality. Each mono-aldehyde POSS was then reacted with N-methylglycine and C60 to yield the desired POSS fulleropyrrolidines. The prepared compounds were characterized by multinuclear NMR, electrospray mass spectrometry, UV-VIS, fluorescence and optical power limiting measurements.","PeriodicalId":192889,"journal":{"name":"2008 International Conference on Nanoscience and Nanotechnology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130232709","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：