Material World Network: SWCNT Sensors: Interplay Between Schottky Barrier and Gas Adsorption
材料世界网:SWCNT 传感器:肖特基势垒与气体吸附之间的相互作用
基本信息
- 批准号:1008242
- 负责人:
- 金额:$ 37.52万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2010
- 资助国家:美国
- 起止时间:2010-08-01 至 2014-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This is a joint project between Georgetown University (GU), USA, and the Russian Research Centre (RRC) Kurchatov Institute in Moscow, with the goal to tackle a very challenging problem: identifying the sensing mechanism in carbon nanotube (CNT) devices. Carbon nanotube field effect transistors (CNT-FETs) have extraordinary potential as nanoscale, highly-sensitive chemical sensors. However, to date, no systematic study has been done to understand the underlying response mechanism. An intuitive and widely accepted explanation is that molecules bind to the surface of the nanotube and charge transfer occurs between the nanotube and the molecules. A second possibility is a change in the Schottky barrier at the interface between the nanotube and the electrical contacts. This project will conduct a thorough experimental and theoretical investigation of the interaction between carbon nanotube devices and analyte molecules for several chemicals, including hole dopants such as NO2, and electron dopants, such as NH3, by using experimental methods specifically designed to determine the response mechanism. This study will include isolated carbon nanotubes, carbon nanotube networks and nanotubes decorated with metal nanoparticles, as well as the use of a Kelvin Probe system to measure the change in the metal work-function for the materials forming the electrodes or the nanoparticles, upon exposure to a controlled concentration of gases. The sample fabrication, the preliminary testing and the measurements of the change in the work-function of the metal electrodes will be performed at GU, where a Gas-cell Kelvin probe system will be acquired. The characterization of the sample response as a function of concentration and humidity level for different gases will be performed only in part at GU and mainly at RRC. A custom built gas sensor testing facility at the RRC Kurchatov Institute allows control of analyte concentrations from several tens of ppb and variation of the sample temperature up to 400 degrees C. By performing measurements as a function of temperature on some of the fabricated devices the team will measure both the Schottky barrier height and the doping level of the CNT conducting channel. The modeling to analyze the experimental results will be done by the RRC group.This study will impact all carbon nanotube device applications, since the difficulty controlling the nanotube/electrode interface and its sensitivity to the environment is one of the major stumbling blocks for the realization of nanotube-based integrated circuits. Moreover, if different mechanisms are involved for different chemicals, it will be possible to design selective sensors by allowing only a specific mechanism, corresponding to a targeted chemical, to occur. The US graduate students will travel to Russia to participate in testing of the samples with the equipment in the Russian laboratory. The senior investigators will also visit Russia for a yearly meeting with the Russian counterpart.This award is co-funded by the Division of Materials Research and the Office of International Science and Engineering.
这是美国乔治敦大学(GU)和俄罗斯研究中心(RRC)库尔恰托夫研究所在莫斯科之间的一个联合项目,目标是解决一个非常具有挑战性的问题:确定碳纳米管(CNT)设备中的传感机制。碳纳米管场效应晶体管(CNT-FET)作为纳米级、高灵敏度的化学传感器具有非凡的潜力。然而,到目前为止,还没有系统的研究已经做了了解潜在的反应机制。一个直观且被广泛接受的解释是,分子结合到纳米管的表面,并且在纳米管和分子之间发生电荷转移。第二种可能性是在纳米管和电接触之间的界面处的肖特基势垒的变化。该项目将对碳纳米管器件与分析物分子之间的相互作用进行彻底的实验和理论研究,包括空穴掺杂剂(如NO2)和电子掺杂剂(如NH3),通过使用专门设计的实验方法来确定响应机制。这项研究将包括孤立的碳纳米管,碳纳米管网络和装饰有金属纳米颗粒的纳米管,以及使用开尔文探针系统来测量形成电极或纳米颗粒的材料在暴露于受控浓度的气体时金属功函数的变化。将在GU进行样品制造、初步测试和金属电极功函数变化的测量,并将在GU获得气室开尔文探针系统。将仅在GU部分地且主要在RRC处对作为不同气体的浓度和湿度水平的函数的样品响应进行表征。RRC Kurchatov研究所的定制气体传感器测试设施允许控制分析物浓度从几十ppb到样品温度变化高达400摄氏度。通过对一些制造的器件进行温度函数的测量,该团队将测量肖特基势垒高度和CNT导电沟道的掺杂水平。 实验结果分析的建模将由RRC小组完成。这项研究将影响所有碳纳米管器件的应用,因为难以控制纳米管/电极界面及其对环境的敏感性是实现基于纳米管的集成电路的主要障碍之一。此外,如果不同的化学品涉及不同的机制,则可以通过仅允许与目标化学品对应的特定机制发生来设计选择性传感器。美国研究生将前往俄罗斯,在俄罗斯实验室用设备对样本进行测试。高级研究人员还将访问俄罗斯,与俄罗斯同行举行年度会议。该奖项由材料研究部和国际科学与工程办公室共同资助。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Paola Barbara其他文献
Signatures of Floquet electronic steady states in graphene under continuous-wave mid-infrared irradiation
连续波中红外辐射下石墨烯中 Floquet 电子稳态的特征
- DOI:
10.1038/s41467-025-57335-2 - 发表时间:
2025-02-28 - 期刊:
- 影响因子:15.700
- 作者:
Yijing Liu;Christopher Yang;Gabriel Gaertner;John Huckabee;Alexey V. Suslov;Gil Refael;Frederik Nathan;Cyprian Lewandowski;Luis E. F. Foa Torres;Iliya Esin;Paola Barbara;Nikolai G. Kalugin - 通讯作者:
Nikolai G. Kalugin
Fabrication and properties of vertically stacked <em>Nb/Al <img class="glyph" src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/sbnd" /> AlOχ/Nb</em> Josephson tunnel junctions
- DOI:
10.1016/s0011-2275(05)80211-5 - 发表时间:
1994-01-01 - 期刊:
- 影响因子:
- 作者:
Lucia Capogna;Giovanni Costabile;Paola Barbara;Nadia Martucciello;Roberto Monaco - 通讯作者:
Roberto Monaco
Paola Barbara的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Paola Barbara', 18)}}的其他基金
Effects of Quantum Confinement in Photosensors from Transition Metal Dichalcogenides
过渡金属二硫化物光电传感器中的量子限制效应
- 批准号:
2132098 - 财政年份:2021
- 资助金额:
$ 37.52万 - 项目类别:
Standard Grant
Collaborative research: Floquet-Bloch topological states in quantum Hall systems
合作研究:量子霍尔系统中的Floquet-Bloch拓扑态
- 批准号:
2104770 - 财政年份:2021
- 资助金额:
$ 37.52万 - 项目类别:
Continuing Grant
Nanostructured materials for photonics and spectroscopy
用于光子学和光谱学的纳米结构材料
- 批准号:
1610953 - 财政年份:2016
- 资助金额:
$ 37.52万 - 项目类别:
Standard Grant
Collaborative Research: Coherent Transport in the One-Dimensional limit
合作研究:一维极限下的相干传输
- 批准号:
0907220 - 财政年份:2009
- 资助金额:
$ 37.52万 - 项目类别:
Standard Grant
MRI: Acquisition of a Field Emission Scanning Electron Microscope for Imaging and Electron-Beam Nanolithography
MRI:获取场发射扫描电子显微镜用于成像和电子束纳米光刻
- 批准号:
0521170 - 财政年份:2005
- 资助金额:
$ 37.52万 - 项目类别:
Standard Grant
PECASE: Superconductor/Carbon-Nanotube Junctions and Interfaces
PECASE:超导体/碳纳米管结和界面
- 批准号:
0239721 - 财政年份:2003
- 资助金额:
$ 37.52万 - 项目类别:
Continuing Grant
相似国自然基金
国际心脏研究会第二十三届世界大会(XXIII World Congress ISHR)
- 批准号:81942001
- 批准年份:2019
- 资助金额:10 万元
- 项目类别:专项基金项目
相似海外基金
Evaluating Real-world Diabetes Prevention Programs in a Multi-campus University System and a Three-state Regional Health Network
评估多校区大学系统和三州区域卫生网络中的现实世界糖尿病预防计划
- 批准号:
10662416 - 财政年份:2022
- 资助金额:
$ 37.52万 - 项目类别:
Evaluating Real-world Diabetes Prevention Programs in a Multi-campus University System and a Three-state Regional Health Network
评估多校区大学系统和三州区域卫生网络中的现实世界糖尿病预防计划
- 批准号:
10554970 - 财政年份:2022
- 资助金额:
$ 37.52万 - 项目类别:
Understanding cascading cellular protein responses following multi-protein stimuli using network modeling and real-world evidence
使用网络模型和现实世界证据了解多蛋白刺激后的级联细胞蛋白反应
- 批准号:
10685328 - 财政年份:2022
- 资助金额:
$ 37.52万 - 项目类别:
Digitization PEN: Adding a world-class flea collection to the Terrestrial Parasite Tracker network
数字化 PEN:将世界级的跳蚤收藏添加到陆地寄生虫追踪器网络中
- 批准号:
2101926 - 财政年份:2021
- 资助金额:
$ 37.52万 - 项目类别:
Standard Grant
Neural Network based Graph Learning: Model Evolution and Real-World Application
基于神经网络的图学习:模型演化和实际应用
- 批准号:
21K12042 - 财政年份:2021
- 资助金额:
$ 37.52万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Canadian COVID-19 Emergency Department Rapid Response Network: Determining Real-World Vaccine Effectiveness and Duration of Protection Against Variants of Concern
加拿大 COVID-19 急诊部快速反应网络:确定现实世界疫苗的有效性和针对关注变体的保护持续时间
- 批准号:
448977 - 财政年份:2021
- 资助金额:
$ 37.52万 - 项目类别:
Operating Grants
Applying, developing and evaluating Bayesian Network structure learning algorithms to complex real-world datasets .
将贝叶斯网络结构学习算法应用、开发和评估到复杂的现实世界数据集。
- 批准号:
2441682 - 财政年份:2020
- 资助金额:
$ 37.52万 - 项目类别:
Studentship
SBIR Phase II (COVID-19): Improved 5G Network Performance and Demand Prediction in a Virtually Connected World
SBIR 第二阶段 (COVID-19):虚拟连接世界中改进的 5G 网络性能和需求预测
- 批准号:
2025956 - 财政年份:2020
- 资助金额:
$ 37.52万 - 项目类别:
Cooperative Agreement
The Nurture Network: Promoting Young People's Mental Health in a Digital World
培育网络:在数字世界中促进年轻人的心理健康
- 批准号:
ES/S004467/2 - 财政年份:2020
- 资助金额:
$ 37.52万 - 项目类别:
Research Grant
Connection Greek and Mesopotamian World: Western Expansion of the Anatolian Trading Network in the First Half of the 2nd Mill. BCE
连接希腊和美索不达米亚世界:第二工厂上半年安纳托利亚贸易网络的西部扩张。
- 批准号:
19H01351 - 财政年份:2019
- 资助金额:
$ 37.52万 - 项目类别:
Grant-in-Aid for Scientific Research (B)