3DFold - Programmed folding of mesoscopic 3D objects by viscoelastic reconfiguration

3DFold - 通过粘弹性重构对介观 3D 对象进行编程折叠

• 批准号: 412265813
• 负责人: Dr.-Ing. Robert Kirchner
• 金额: --
• 依托单位: Institut für Halbleiter- und Mikrosystemtechnik (IHM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/412265813?language=en
• 关键词: 3DFold; Programmed; folding; mesoscopic; 3D

Current techniques for the production of real 3D structures, which might contain undercuts and hidden structures, are either limited in their resolution or do not achieve a sufficient production speed for high volume production. In addition, the existing techniques are hardly scalable and cannot be used in an equivalent way for structural dimensions in the range from a few hundred nanometers up to a few hundred micrometers. However, there are applications which require a high resolution method, can be used across scales and are capable of high volume production. Such demanding applications include sensors based on 3D plasmonic particles, the generation of intelligent and uniquely identifiable 3D particles for digital microfluidics, 3D actuators for micro- and nano-softrobotics, capture-release applications, 3D micro- and nanoelectronic systems as well as multiplex methods in bio and gene analysis using 3D particles for suspension array techniques. The aim of this application is to establish a new technology and to demonstrate its usability by means of two selected demonstrator applications from the field of particle transport and plasmonics. This proposal uses so-called origami structure generation, i. e., the self-folding of 3-dimensional objects emanating from a planar 2-dimensional structure according to a given sequence and triggered by an external stimulus. The innovation of this application lies in the use of thermoplastic actuators to drive this folding as well as the technologically efficient modification and programming of the activation temperature of the polymer actuators. By a thermal stimulus slightly exceeding the glass transition temperature, capillary forces are generated by the actuators, which transform planar structures by out-of-plane rotations into 3D objects. The advantages of the method proposed here are the controllability and the programmability of the softening of the thermoplastic materials, the usability across scales as well as the large material diversity for the 3D objects from polymers to semiconductors and metals to magnetic materials. During the structural transformation or reconfiguration, for example, particles can be trapped. Furthermore, the 3D objects can be provided with an identification code on a plasmonic basis and are thus clearly recognizable as individual particles. Both scenarios will be demonstrated within this proposal.

用于生产可能包含底切和隐藏结构的真实的3D结构的当前技术要么在其分辨率方面受到限制，要么不能实现用于大批量生产的足够的生产速度。此外，现有技术几乎不可扩展，并且不能以等同的方式用于从几百纳米到几百微米的范围内的结构尺寸。然而，有些应用需要高分辨率方法，可以跨规模使用，并且能够大批量生产。这些要求苛刻的应用包括基于3D等离子体粒子的传感器，用于数字微流体的智能和唯一可识别的3D粒子的生成，用于微和纳米软机器人的3D致动器，捕获-释放应用，3D微和纳米电子系统以及使用3D粒子进行悬浮阵列技术的生物和基因分析中的多路复用方法。该应用程序的目的是建立一项新技术，并通过粒子输运和等离子体激元学领域的两个选定的演示应用程序来演示其可用性。该建议使用所谓的折纸结构生成，即。例如，根据给定的顺序，由外部刺激触发，从平面二维结构中产生的三维物体的自折叠。该应用的创新在于使用热塑性致动器来驱动这种折叠以及聚合物致动器的活化温度的技术有效的修改和编程。通过稍微超过玻璃化转变温度的热刺激，致动器产生毛细力，其通过平面外旋转将平面结构转换为3D物体。这里提出的方法的优点是热塑性材料软化的可控性和可编程性，跨尺度的可用性以及从聚合物到半导体和金属到磁性材料的3D物体的大材料多样性。例如，在结构转换或重构期间，可以捕获颗粒。此外，3D物体可以在等离子体的基础上被提供有识别码，并且因此可以清楚地识别为单个粒子。这两种情况都将在本提案中加以说明。