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

带电纳米颗粒的气相合成、传输和并行打印；

• 批准号: 450218497
• 负责人: Professor Dr. Heiko Jacobs
• 金额: --
• 依托单位: Fachgebiet Nanotechnologie (NANO)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/450218497?language=en
• 关键词: Gas; Phase; Synthesis; Transport; Parallel

- 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.

- 背景资料：这个跨学科的建议是在气溶胶科学的横截面，纳米粒子的合成，并使用新的印刷技术的纳米粒子的局部沉积。该提案描述了一种新的运输方法的调查，该方法支持粒子的局部沉积，可能在三维空间中。具体而言，在初步研究中，我们发现了一种收集机制，能够以高速率局部收集纳米颗粒。强烈简化的过程是涉及介电透镜结构的概念的电动库仑力引导的传输过程，以将纳米颗粒引导到预定的收集或沉积位点。初步结果：第一篇论文发表在Nature Communications上，我们发现收集过程比常用的扩散传输快几个数量级。随后立即提出了几项申请。例如，在题为“Localized Collection of Airborne Analytes”的出版物中，增加的收集率被应用于检测空气传播的分子。在题为“Active Matrix Based Collection of Airborne Analytes：An Analyte Recording Chip Providing Exposure History and FingerPrint”的后续出版物中，讨论了分析物记录芯片的思想。 最近，在不同的范围内，纳米颗粒已经以高速率局部收集，导致由金属和半导体纳米颗粒组成的独立点对点电纳米线桥的生长。建议的研究：展望未来，我们提出了一个基本的结构化研究，以提供更好的理解的基本过程。据了解，该机制是基于高迁移率气体离子与空气中的纳米颗粒、目前结合到电荷耗散基板的介电透镜层和载气之间的相互作用。该过程导致颗粒的局部沉积。继续前进，静态介电透镜将不再结合到衬底。相反，它将被一个可以在表面上扫描的动态透镜阵列所取代。这应该能够形成扫描通量细丝，以高速率将纳米颗粒引导到表面上的预定点。建议安装一个实验平台，以获得相关的工艺参数。具体而言，所提出的系统可以分为三个部分：纳米颗粒源模块（部分可用），局部沉积模块/打印头，和工艺参数监控模块（尚未可用）。所提出的平台和研究调查的气体离子浓度对焦点的影响（WP 1），个别透镜元件的物理尺寸的作用（WP 2）和过渡到门控透镜阵列（WP 3）。最后是所获得的知识的整合和多材料NP源模块（WP 4）的合并。