MRI: Development of a Deposition System for 3D Patterning of Molecular Materials in Vacuum

MRI：开发用于真空中分子材料 3D 图案化的沉积系统

• 批准号: 0521484
• 负责人: Rudiger Schlaf
• 金额: --
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0521484&HistoricalAwards=false
• 关键词: MRI; Development; Deposition; System; 3D

The proposed device is a standard vacuum flange compatible electrospray-based deposition unit ("MoleculeWriter"), capable of patterned deposition of molecular materials directly from solution in vacuum. The device utilizes the electrospray principle to inject molecular materials into high vacuum. Since electrospray generates an ionized molecular beam focusing and deflection by electromagnetic means becomes possible. This property will be used to generate a well-defined beam that can be directed to certain locations on the substrate, i.e. three-dimensional patterning becomes possible. Through computer control, arbitrary patterns can be generated. The materials that can be deposited with this system encompass a wide range of molecular entities as different in properties as luminescent polymers, proteins, functionalized nano-crystals, oligonucleotides, or supra-molecular species. The vacuum capability will enable fast solvent removal (i.e. prevent droplet related drying artifacts), precisely controlled, contamination-free deposition, and compatibility with established vacuum based deposition techniques (e.g. for metals and insulators) and surface preparation methods. Intersolubility issues will be dramatically reduced due to the vacuum environment, enabling the controlled deposition of three-dimensional multi-layered structures of materials soluble in the same solvent.The proposed program will focus on the simulation and construction of a system of suitable ion-optics to focus and deflect an electrospray injected molecular ion beam, the building of a prototype of the patterning device, its optimization, and the demonstration of its capabilities on a variety of molecular materials. It is planned to initially commercialize the device as an add-on system to existing vacuum equipment.The proposed work aims at the design and implementation of a device, which will be able to arrange nano-materials into well-defined three-dimensional structures on substrates. In order to utilize the special properties of nano-materials, methods need to be found to make structures from them, allowing the manufacture of nano-technology devices with practical uses, such as sensors or electronics. The proposed device will enable the patterning of nano-materials on a substrate in vacuum directly from a solution. The device will utilize the electrospray principle, to create a charged beam of the molecules separated from the solvent. The charges on the molecules can be used to focus and deflect the beam using electric and magnetic fields, so that the beam can be used to paint a defined pattern on a substrate in much the same way that an elctron beam paints a picture on a television screen. The proposed work will focus on the design and construction of a prototype of such a device, and its optimization and demonstration.

所提出的装置是标准真空法兰兼容的基于电喷雾的沉积单元（“MoleculeWriter”），其能够在真空中直接从溶液图案化沉积分子材料。该装置利用电喷雾原理将分子材料注入到高真空中。由于电喷雾产生电离的分子束，通过电磁手段聚焦和偏转成为可能。该特性将用于生成可以被引导到衬底上的某些位置的明确定义的光束，即三维图案化变得可能。通过计算机控制，可以生成任意图案。可以用该系统沉积的材料包括各种各样的分子实体，如发光聚合物、蛋白质、功能化纳米晶体、寡核苷酸或超分子物质。真空能力将实现快速溶剂去除（即防止与液滴相关的干燥伪影）、精确控制、无污染沉积以及与已建立的基于真空的沉积技术（例如用于金属和绝缘体）和表面制备方法的兼容性。由于真空环境，互溶性问题将大大减少，使可溶于同一溶剂的材料的三维多层结构的可控沉积成为可能。拟议的计划将集中在合适的离子光学系统的模拟和构建，以聚焦和偏转电喷雾注入的分子离子束，图案形成装置的原型的构建，其优化，并在各种分子材料上展示其能力。计划首先将该设备作为现有真空设备的附加系统进行商业化。拟议的工作旨在设计和实现一种设备，该设备将能够将纳米材料排列成基底上定义明确的三维结构。为了利用纳米材料的特殊性质，需要找到方法来制造它们的结构，从而制造具有实际用途的纳米技术设备，例如传感器或电子器件。所提出的设备将使纳米材料的图案在真空中直接从溶液的基板上。该装置将利用电喷雾原理，以产生从溶剂中分离的分子的带电束。分子上的电荷可以用来利用电场和磁场聚焦和偏转光束，这样光束就可以用来在基底上画出一个确定的图案，就像电子束在电视屏幕上画出一幅图像一样。拟议的工作将侧重于设计和建造这种装置的原型，以及其优化和演示。