Tip-based Nanochemistry for Printing Soft Materials

用于打印软材料的基于尖端的纳米化学

• 批准号: 1661412
• 负责人: Keith Brown
• 金额: $ 40.09万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1661412&HistoricalAwards=false
• 关键词: Tip; based; Nanochemistry; Printing; Soft

The ubiquitous utilization of integrated circuits shows that industry is exceptionally capable of manufacturing ultra-high resolution arrangements of semiconductors, metals and insulators. However, there is a vast disconnect between the methods for patterning these sorts of hard materials and those that exist for patterning soft materials such as chemicals, polymers or biological materials. If it were possible to pattern soft materials with the same reliability and resolution as hard materials, it would enable the manufacture of myriad structures and devices including electronics with multiplexed biosensor arrays or nanoscale organic electronic devices for applications in stretchable electronics. While additive manufacturing strategies are very useful at the macroscopic scale, these approaches have not achieved manufacturing-level reproducibility when patterning soft materials at the nanoscale. This award will enable nanoscale manufacturing of soft materials by providing the tools and understanding needed to realize patterning with industry-required reliably and nanoscale resolution. This interdisciplinary work spans fluid mechanics, control theory, and nanoscience and contributes to the undergraduate and graduate level education of engineering students. Furthermore, this work provides opportunities for students from broad backgrounds to design and interact with materials at previously inaccessible scales. The main goal of this research work is to develop the fundamental and technological foundation to transition tip-based nanopatterning of soft materials into a manufacturing tool. This approach is based on the transfer of material from an ink-coated scanning probe to a surface. Despite over a decade of research, reproducibility and controllability have remained key barriers for the adoption of this technique in a manufacturing setting. This research work addresses a number of processing issues that have not previously received attention. It investigates and develops novel approaches, e.g., a method for precisely monitoring the quantity of ink that is on a probe, an ink formulation that allows one to pattern and image with the same probe, and a procedure for monitoring and controlling the concentration of reagents in the ink during patterning. Equally important, these studies are designed to provide deeper insight into the patterning process and answer open questions about nanoscale capillarity and statistical mechanics in systems that violate the continuum hypothesis. Additionally, these new approaches are combined with advanced models of patterning to form an automated closed-loop feedback system that iteratively improves the quality of patterning in situ.

集成电路的普遍使用表明，工业非常有能力制造半导体、金属和绝缘体的超高分辨率排列。然而，在对这类硬材料进行图案化的方法与现有的对化学品、聚合物或生物材料等软材料进行图案化的方法之间存在着巨大的脱节。如果有可能以与硬材料相同的可靠性和分辨率构图软材料，它将能够制造无数的结构和设备，包括具有多路复用生物传感器阵列的电子设备或用于可拉伸电子设备的纳米级有机电子设备。虽然添加制造策略在宏观尺度上非常有用，但当在纳米尺度上对软材料进行图案化时，这些方法还没有实现制造级别的重复性。这一奖项将通过提供所需的工具和理解来实现具有行业要求的可靠和纳米级分辨率的图案化，从而实现软材料的纳米级制造。这项跨学科的工作横跨流体力学、控制理论和纳米科学，有助于工科学生的本科生和研究生水平的教育。此外，这项工作为来自广泛背景的学生提供了设计材料并与之互动的机会，这些材料以前是无法接触到的。这项研究工作的主要目标是为将基于针尖的软材料纳米涂层转化为制造工具奠定基础和技术基础。这种方法是基于将材料从涂有墨水的扫描探针转移到表面上。尽管经过了十多年的研究，但重复性和可控性仍然是在制造环境中采用这项技术的关键障碍。这项研究工作解决了一些以前没有得到关注的处理问题。它研究和开发了新的方法，例如，用于精确监控探针上的墨水量的方法，允许人们用相同的探针进行图案和成像的墨水配方，以及用于在图案形成期间监测和控制墨水中试剂浓度的程序。同样重要的是，这些研究旨在为图案化过程提供更深入的见解，并回答违反连续统假设的系统中关于纳米尺度毛细作用和统计力学的公开问题。此外，这些新方法与先进的图案化模型相结合，形成了一个自动闭环反馈系统，反复提高原位图案化的质量。

项目成果

Increasing Throughput in Fused Deposition Modeling by Modulating Bed Temperature

通过调节床温提高熔融沉积建模的吞吐量

• DOI: 10.1115/1.4050177
• 发表时间: 2021
• 期刊: Journal of Manufacturing Science and Engineering
• 作者: Snapp, Kelsey L.;Gongora, Aldair E.;Brown, Keith A.
• 通讯作者: Brown, Keith A.

Design and Realization of 3D Printed AFM Probes

• DOI: 10.1002/smll.201800162
• 发表时间: 2018-05-09
• 期刊: SMALL
• 影响因子: 13.3
• 作者: Alsharif, Nourin;Burkatovsky, Anna;Brown, Keith A.
• 通讯作者: Brown, Keith A.

Closed-Loop Nanopatterning of Liquids with Dip-Pen Nanolithography

使用浸笔纳米光刻技术对液体进行闭环纳米图案化

• DOI: 10.1021/acsami.1c00095
• 发表时间: 2021
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Saygin, Verda;Xu, Bowen;Andersson, Sean B.;Brown, Keith A.
• 通讯作者: Brown, Keith A.

Dielectrophoresis of air

空气介电泳

• DOI: 10.1063/5.0002286
• 发表时间: 2020
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Soffer, Lucas;Rendos, Abigail;Zosuls, Aleksandrs L.;Walsh, Brian M.;Brown, Keith A.
• 通讯作者: Brown, Keith A.

Designing lattices for impact protection using transfer learning

• DOI: 10.1016/j.matt.2022.06.051
• 发表时间: 2022-07
• 期刊: Matter
• 影响因子: 18.9
• 作者: Aldair E. Gongora;Kelsey L. Snapp;Richard Pang;T. Tiano;Kristofer G. Reyes;E. Whiting;T. Lawton;E. Morgan;Keith A. Brown