Chemical Sensors Based on Electrodeposited Metal Nanowires: Three New Mechanisms for Sensing
基于电镀金属纳米线的化学传感器:三种新的传感机制
基本信息
- 批准号:1306928
- 负责人:
- 金额:$ 46.5万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2013
- 资助国家:美国
- 起止时间:2013-07-15 至 2016-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Macromolecular, Supramolecular, and Nanochemistry and Chemical Measurement and Imaging Programs jointly support Professor Reginald M. Penner of the Department of Chemistry at the University of California at Irvine to investigate chemical sensors based upon metal nanowires. Three new modes for detecting molecules using metal nanowires are being developed in this project, which coincide with three objectives: 1) the use of surface electron scattering to detect gas phase molecules using noble metal nanowires. A specific example is a single gold nanowire that is capable of rapidly detecting 1 ppm NO2 and NO in air at elevated temperatures. 2) To exploit the heat of molecular chemisorption as means for detecting adsorbates in the gas phase using arrays of suspended metal nanowires. These investigations focus on ethylene on platinum and ethanol on palladium. 3) To create a family of nanoscopic chemical sensors based upon nanogaps in metal nanowires that are modified by the insertion of an affinity medium, such as a conductive organic polymer imprinted for the analyte molecule of interest, as well as a conductive polymer with incorporated antibodies during polymerization from solution. A broader impact of this research activity is a project involving outreach to economically disadvantaged high school students in the Santa Ana, California school district. Each year this provides a student from Santa Ana High School ten weeks of full-time paid summer research in Professor Penner's laboratory.As a chemical sensor is made progressively smaller, it responds more rapidly to changing concentrations of the molecule that is being measured. In this project, a family of highly miniaturized chemical sensors are created using metal nanowires. These nanowires are prepared using a process that is closely related to those used in the semiconductor industry to prepare integrated circuits. The resulting nanowires, composed of gold, palladium, or platinum, are approximately 1/100th the diameter of a human hair, but of similar lengths on the order of millimeters or centimeters. The electrical resistance of these diminutive wires increases when molecules attach to the surfaces of the wire, and this process provides a means for detecting these molecules very rapidly, within a few seconds. The molecules that are being detected in these studies are nitrogen dioxide, sulfur dioxide, carbon monoxide, and hydrocarbons like methane and ethane. In addition to a rapid response, a second advantage of these nanowire-based chemical sensors is their simplicity: A chemical sensor consists of a single metal nanowire, two electrical contacts to this nanowire, and an instrument for measuring its electrical resistance. Consequently, these sensors can be very inexpensive.
大分子,超分子,纳米化学和化学测量和成像计划共同支持教授雷金纳德M。Penner博士在欧文的加州大学化学系研究基于金属纳米线的化学传感器。本项目正在开发三种利用金属纳米线检测分子的新模式,这三种模式与三个目标相吻合:1)利用表面电子散射检测气相分子,利用贵金属纳米线。一个具体的例子是能够在高温下快速检测空气中1 ppm NO2和NO的单根金纳米线。2)利用分子化学吸附热,以悬浮金属奈米线阵列侦测气相中的吸附物。这些调查集中在乙烯铂和乙醇钯。3)为了创建基于金属纳米线中的纳米间隙的纳米级化学传感器的家族,所述纳米间隙通过插入亲和介质(例如,针对感兴趣的分析物分子印迹的导电有机聚合物,以及在从溶液聚合期间具有结合的抗体的导电聚合物)来改性。这项研究活动的一个更广泛的影响是一个项目,涉及在加州圣安娜学区的经济困难的高中学生外展。 每年,这个项目都会为一名来自圣安娜高中的学生提供十周的全职带薪暑期研究,在彭纳教授的实验室里进行。随着化学传感器越来越小,它对被测分子浓度变化的反应也越来越快。 在这个项目中,使用金属纳米线创建了一系列高度小型化的化学传感器。 这些纳米线是使用与半导体工业中用于制备集成电路的工艺密切相关的工艺制备的。 由此产生的纳米线由金、钯或铂组成,直径约为人类头发的1/100,但长度相似,为毫米或厘米量级。 当分子附着在这些小导线的表面时,这些小导线的电阻会增加,这个过程提供了一种在几秒钟内非常快速地检测这些分子的方法。 在这些研究中检测到的分子是二氧化氮,二氧化硫,一氧化碳和甲烷和乙烷等碳氢化合物。 除了快速响应之外,这些基于纳米线的化学传感器的第二个优点是它们的简单性:化学传感器由单个金属纳米线、与该纳米线的两个电触点以及用于测量其电阻的仪器组成。 因此,这些传感器可能非常便宜。
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)
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Reginald Penner其他文献
Reginald Penner的其他文献
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{{ truncateString('Reginald Penner', 18)}}的其他基金
Chemical Sensors Based Upon Metal Nanowires and Nanogaps in Metal Nanowires Transduced Using Impedance
基于金属纳米线和使用阻抗转换的金属纳米线中的纳米间隙的化学传感器
- 批准号:
2201042 - 财政年份:2022
- 资助金额:
$ 46.5万 - 项目类别:
Standard Grant
The Aptamer BioResistor: A Broadly Applicable Protein Biosensor with Dip-and-Read Simplicity for Point-of-Care Diagnostics
Aptamer BioResistor:一种广泛适用的蛋白质生物传感器,具有简单的浸入式读取功能,可用于即时诊断
- 批准号:
2149631 - 财政年份:2022
- 资助金额:
$ 46.5万 - 项目类别:
Standard Grant
The Impedance-Transduced BioResistor (ITBR): A Biosensor Architecture for Rapid, Sensitive, Label-Free Quantitation of Proteins.
阻抗转导生物电阻 (ITBR):一种用于快速、灵敏、无标记蛋白质定量的生物传感器架构。
- 批准号:
1803314 - 财政年份:2018
- 资助金额:
$ 46.5万 - 项目类别:
Standard Grant
Photoconductive Metal Nanowires with Embedded Semiconductor Nanonodes
具有嵌入式半导体纳米节点的光电导金属纳米线
- 批准号:
1206867 - 财政年份:2012
- 资助金额:
$ 46.5万 - 项目类别:
Continuing Grant
Chemical Sensors Based on Electrodeposited Metal Nanowires
基于电镀金属纳米线的化学传感器
- 批准号:
0956524 - 财政年份:2010
- 资助金额:
$ 46.5万 - 项目类别:
Continuing Grant
Chemical Sensors Based upon Electrodeposited Metal Nanowires
基于电镀金属纳米线的化学传感器
- 批准号:
0641169 - 财政年份:2007
- 资助金额:
$ 46.5万 - 项目类别:
Continuing Grant
Metal Sulfide Nanowires and "Wired" Nanoparticles
金属硫化物纳米线和“有线”纳米粒子
- 批准号:
0654055 - 财政年份:2007
- 资助金额:
$ 46.5万 - 项目类别:
Standard Grant
Metal Sulfide Semiconductor Nanowires and "Wired" Nanoparticles
金属硫化物半导体纳米线和“有线”纳米粒子
- 批准号:
0405477 - 财政年份:2004
- 资助金额:
$ 46.5万 - 项目类别:
Continuing Grant
US-France Cooperative Research: Electrochemical Preparation of Nanowires and Mesowires for Chemical Sensing.
美法合作研究:用于化学传感的纳米线和介观线的电化学制备。
- 批准号:
0233371 - 财政年份:2003
- 资助金额:
$ 46.5万 - 项目类别:
Standard Grant
Chemical Sensors Based on Electrodeposited Metal Nanowires
基于电镀金属纳米线的化学传感器
- 批准号:
0111557 - 财政年份:2001
- 资助金额:
$ 46.5万 - 项目类别:
Continuing Grant
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