EAGER: Experimental studies of electrical double-layer capacitance of graphene using van der Waals heterostructures

EAGER：利用范德华异质结构对石墨烯双电层电容进行实验研究

基本信息

批准号：
1940764
负责人：
Davood Shahrjerdi
金额：
$ 12万
依托单位：
New York University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-09-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1940764&HistoricalAwards=false
关键词：
EAGER Experimental studies electrical double

项目摘要

Nontechnical:Electrochemical devices based on graphene have shown promise for sensing and energy storage applications. Graphene-based electrochemical transistors have also been demonstrated to record electrical signals in the brain. A major reason for interest in this family of devices is their ease of fabrication and simple operation. New applications using electrochemical devices require dense integration of these devices into large-scale functional systems. This has, however, remained a difficult challenge. It is difficult to maintain high performance and low variability when reducing device dimensions. Advances in nanofabrication make it possible to miniaturize electrochemical devices, but much work still needs to be done to fully understand the underlying physics that governs their operation. This knowledge is essential to enable systematic downscaling of the electrochemical devices. This project will make important progress towards that goal by studying capacitance in a strongly correlated quantum system.Technical:Electrical double-layer capacitance per unit area is a key metric for engineering the performance of miniaturized electrochemical devices. An important new research direction for studying the electrical double-layer capacitance of graphene is to investigate the capacitance per unit area with the aid of graphene electronic band structure. Inspired by this new research direction, the proposed research explores a new paradigm for precise engineering of the electrical double-layer capacitance of miniaturized graphene electrochemical devices. This paradigm involves enhancing the correlation between electrons in graphene and ions in the electrolyte. The research approach in this study is interdisciplinary in that it will use advanced van der Waals graphene heterostructures from quantum physics to explore a longstanding question in electrochemistry. Specifically, van der Waals graphene heterostructures will be used as the test device structure, where the potential profile across graphene will be tuned during the construction of the heterostructure. To study the effect of the potential profile in graphene on the electrical double-layer capacitance, the devices will be electrically characterized using capacitance-voltage and voltammetry measurements. The proposed research project may enable accurate engineering of the capacitance in graphene with nanoscale precision, while revealing a pathway for increasing its achievable value beyond the current limits. This project will also trai of students in important scientific areas and provide them with expertise in device physics, nanofabrication, and analysis methods.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

非技术性：基于石墨烯的电化学设备已显示出对传感和储能应用的希望。基于石墨烯的电化学晶体管也已被证明可以记录大脑中的电信号。对这个设备系列的兴趣的主要原因是它们的制造便捷性和简单的操作。使用电化学设备的新应用需要将这些设备密集整合到大型功能系统中。但是，这仍然是一个艰巨的挑战。降低设备尺寸时，很难保持高性能和较低的可变性。纳米制作的进步使小型电化学设备的小型化是可能的，但是仍然需要做很多工作来充分了解控制其运营的基本物理。这些知识对于实现电化学设备的系统缩小至关重要。该项目将通过在密切相关的量子系统中研究电容来实现这一目标的重要进展。技术：单位区域的电气双层电容是工程性能在微型电化学设备上性能的关键指标。研究石墨烯的电气双层电容的一个重要新研究方向是借助石墨烯电子带结构研究单位面积的电容。受这个新的研究方向的启发，拟议的研究探讨了微型石墨烯电化学设备的电气双层电容的精确工程的新范式。该范式涉及增强石墨烯中电子与电解质离子之间的相关性。这项研究的研究方法是跨学科的，因为它将使用量子物理学的先进的范德华石墨烯异质结构来探索一个长期存在的电化学问题。具体而言，范德华石墨烯异质结构将用作测试装置结构，在此期间，在构建异质结构期间将调整跨石墨烯的潜在轮廓。为了研究石墨烯中电势对电气电容的影响，将使用电容 - 电压和伏安法测量值对设备进行电表征。拟议的研究项目可以通过纳米级精确度实现石墨烯中电容的准确工程，同时揭示了将其可实现价值提高到当前限制之外的途径。该项目还将在重要的科学领域的学生中进行研究，并为他们提供设备物理，纳米制作和分析方法的专业知识。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的评估评估来审查标准的。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

An Electrochemical Biochip for Measuring Low Concentrations of Analytes With Adjustable Temporal Resolutions

DOI：
10.1109/tbcas.2020.3009303
发表时间：
2020-07
期刊：
IEEE Transactions on Biomedical Circuits and Systems
影响因子：
5.1
作者：
Kae-Dyi You;Edoardo Cuniberto;Shao-Cheng Hsu;Bohan Wu;Zhujun Huang;Xiaochang Pei;D. Shahrjerdi
通讯作者：
Kae-Dyi You;Edoardo Cuniberto;Shao-Cheng Hsu;Bohan Wu;Zhujun Huang;Xiaochang Pei;D. Shahrjerdi

Versatile construction of van der Waals heterostructures using a dual-function polymeric film