Gas-Phase Synthesis, Transport, and Parallel Printing of Charged Nanoparticles; Research Exploring a Discovered Electrodynamic Nanolens Based Transport Concept

-背景：这项跨学科的提案涉及气溶胶科学、纳米颗粒的合成以及使用新的印刷技术进行纳米颗粒的局部沉积。该提案描述了对一种新的传输方法的研究，这种方法支持颗粒的局部沉积，可能是三维的。具体地说，在初步研究中，我们发现了一种收集机制，使高速率的局部收集纳米粒子成为可能。该过程被高度简化，是一种电动力学库仑力定向传输过程，涉及介电透镜结构的概念，以将纳米颗粒引导到预定的收集或沉积位置。-初步结果：在《自然通讯》上发表了第一篇论文，我们在那里发现，收集过程比通常使用的仅扩散传输快几个数量级。随之而来的是几个即时的申请。例如，在题为《气载分析物的本地化收集》的出版物中，增加的采集率被应用于检测空气中的分子。在随后发表的题为《基于有源矩阵的气载分析物收集：提供暴露历史和指纹的分析物记录芯片》的出版物中，讨论了分析物记录芯片的想法。最近，随着不同范围的纳米颗粒在当地被高速收集，导致由金属纳米颗粒和半导体纳米颗粒组成的独立式点到点电子纳米线桥的增长。-建议的研究：展望未来，我们提出了一项基础的结构化研究，以更好地了解潜在的过程。据了解，这种机制是基于高迁移率气体离子与空气中纳米粒子、目前连接到电荷耗散衬底的介质透镜层和载气之间的相互作用。这一过程导致了颗粒的局部沉积。展望未来，静态介电透镜将不再与基板结合。取而代之的是可以在表面上扫描的动态透镜阵列。这应该能够形成扫描熔剂细丝，以高速率将纳米颗粒定向到表面上的预定点。建议安装一个实验平台，以获取相关的工艺参数。具体来说，该系统可以分为三个部分：纳米粒子源模块(部分可用)、局域沉积模块/打印头和工艺参数监控模块(尚未提供)。拟议的平台和研究调查了气体离子浓度对聚焦的影响(WP1)、单个透镜元件的物理尺寸(WP2)的作用以及向门控透镜阵列的过渡(WP3)。最后对所获得的知识进行了整合，并结合了一个多材料NP源模块(WP4)。

- Background: This interdisciplinary proposal is at the cross-section of aerosol science, the synthesis of nanoparticle, and the localized deposition of nanoparticles using novel printing techniques. The proposal describes the investigation of a new transport approach, which supports the localized deposition of particles, potentially in three dimensions. Specifically, in a preliminary study, we have discovered a collection mechanism that enables the localized collection of nanoparticles at high rates. Strongly simplified the process is an electrodynamic Coulomb force directed transport process involving the concept of dielectric lensing structures to direct nanoparticles to predetermined collection or deposition sites. -Preliminary Results: A first publication was published in Nature Communications where we found out that the collection process is several orders of magnitudes faster than the commonly used diffusion only transport. Several immediate applications followed. For example, in a publication entitled “Localized Collection of Airborne Analytes” the increased collection rate was applied to detect airborne molecules. In a subsequent publication entitled “Active Matrix Based Collection of Airborne Analytes: An Analyte Recording Chip Providing Exposure History and Finger Print” the idea of an analyte recording chip is discussed. Recently, and following a different scope nanoparticles have been collected locally at high rates causing the growth of freestanding point-to-point electrical nanowire bridges composed of metallic and semiconducting nanoparticles.- Proposed Research: Going forward we propose a fundamental structured study to provide a better understanding of the underlying process. The mechanism, as far as it is understood, is based on the interplay between high mobility gas ions with airborne nanoparticles, a dielectric lensing layer which is currently bonded to a charge dissipating substrate and a carrier gas. The process leads to localized deposition of the particles. Going forward the static dielectric lensing will no longer be bonded to the substrate. Instead it would be replaced with a dynamic lens array that can be scanned over the surface. This should enable the formation of scanning flux filaments to direct nanoparticle to predetermined points on a surface at high rates. The installation of an experimental platform is proposed to gain access to the relevant process parameter. Specifically, the proposed system can be divided into three parts: nanoparticle source module (partially available), localized deposition module/print head, and process parameter monitor modules (not yet available). The proposed platform and study investigates the effect of the gas ion concentration on focus (WP 1), the role of physical dimensions of individual lens elements (WP 2) and a transition to gated lens arrays (WP 3). The integration of the gained knowledge and incorporation of a multimaterial NP source module (WP 4) is last.