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器件在传感和储能应用方面显示出了前景。基于石墨烯的电化学晶体管也被证明可以记录大脑中的电信号。人们对该系列器件感兴趣的一个主要原因是它们易于制造且操作简单。使用电化学设备的新应用需要将这些设备密集集成到大规模功能系统中。然而，这仍然是一个艰巨的挑战。当减小器件尺寸时，很难保持高性能和低可变性。纳米制造的进步使得电化学设备的小型化成为可能，但仍需要做很多工作才能充分理解控制其运行的基础物理原理。这些知识对于实现电化学装置的系统缩小尺寸至关重要。该项目将通过研究强相关量子系统中的电容，在实现这一目标方面取得重要进展。技术：单位面积的双电层电容是设计小型化电化学器件性能的关键指标。研究石墨烯双电层电容的一个重要的新研究方向是借助石墨烯电子能带结构来研究单位面积的电容。受这一新研究方向的启发，该研究探索了微型石墨烯电化学器件双电层电容精确工程的新范式。这种范例涉及增强石墨烯中的电子与电解质中的离子之间的相关性。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中先进的范德华石墨烯异质结构来探索电化学中长期存在的问题。具体来说，范德华石墨烯异质结构将用作测试器件结构，其中石墨烯上的电势分布将在异质结构的构造过程中进行调整。为了研究石墨烯中的电位分布对双电层电容的影响，将使用电容电压和伏安测量来对器件进行电气表征。拟议的研究项目可以实现纳米级精度的石墨烯电容的精确工程，同时揭示将其可实现值提高到超出当前限制的途径。该项目还将培养重要科学领域的学生，并为他们提供器件物理、纳米制造和分析方法方面的专业知识。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查进行评估，被认为值得支持标准。

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