Directed Self-Assembly of Block Copolymer Thin Films into Useful Organized Patterns for Microelectronics and Nanofabrication.

将嵌段共聚物薄膜定向自组装成微电子和纳米制造有用的组织图案。

• 批准号: 2011254
• 负责人: Michael Arnold
• 金额: $ 34.59万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2011254&HistoricalAwards=false
• 关键词: Directed; Self; Assembly; Block; Copolymer

This grant supports research that creates new understanding and capabilities regarding a manufacturing process enabling the fabrication of patterns and features on surfaces that are extremely small -- only a few billionths of a meter (a few nanometers) in extent. Precision fabrication at these lengths is driving manufacturing advances in areas of national importance including microelectronics, optical materials, sensors, chemical purification membranes, and quantum materials. This award supports fundamental research on block copolymer-based nanofabrication. When two different conventional polymers that do not “like” each other are mixed, the two polymers separate – like oil and water. However, when these two polymers are bonded to each other – to form a block copolymer – macroscopic separation is inhibited, and nanoscale segregation occurs instead. Features smaller than hundred (100), ten (10), and even five (5) nanometers are generated automatically, that cannot be easily created otherwise. This project focuses on spatially directing this nanoscale segregation on surfaces so that rationally organized and useful (as opposed to random) patterns can be formed. An example is nanopatterning the surfaces of semiconductors for computer chips so that they perform faster, are more energy efficient, and can be more complex. The research integrates advanced concepts from materials science and engineering, chemistry, and nanomanufacturing. The interdisciplinary research helps widen the involvement of diverse groups in fundamental research and constructively influences science and engineering education.This research specifically addresses the challenge of registering and directing the self-assembly of vertically oriented block copolymer lamellar domains into rationally controlled sub-lithographic patterns through the exploitation of boundary-directed epitaxy. Boundary-directed epitaxy uses the abrupt chemical contrast that is inherent at spatial boundaries between regions on a substrate with different surface composition to direct the registration, alignment, and self-assembly of block copolymers. The advantages are substantial: the boundaries can be defined between features that are planar and relatively large – circumventing the need for trenches or high-resolution chemical patterns. The mechanisms that drive self-assembly are highly unexplored. The project determines the chemical composition / preferentiality window for boundary-directed epitaxy; quantifies the impact of boundary-roughness on assembly; characterizes how defects arise; and understands how the assembly evolves over time. The project studies and demonstrates boundary-directed epitaxy for nanofabrication, materials synthesis, and nanolithography; investigates assembly on templates with curved boundaries and complex shapes – essential for many applications; and, broadens the library of template materials that can be exploited to advance the generality of the phenomenon.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项赠款支持有关在国家进口微电体，光学材料，传感器，化学净化和量子材料的领域中极大地推动制造业方面的新理解和能力的研究彼此“不喜欢”，两个聚合物seprate - 但是，小麦聚合物彼此粘合 - 形成块共聚物的eParation，而纳米级隔离也会出现小于100（100）（10）（10）（10）（10）。 ），即使是自动产生的五（5）个纳米，否则就不会在表面上创建纳米级隔离。因此，他们的表现更快，是更多的能量X。从材料和工程学中，LPS综合了高级概念。 LED亚光刻度模式的外观表面组成的剥削是指导构成的，并且可以在平面和相对大量的沟槽中定义块共聚物的自我组成。分辨率的驱动力的SMS驱动了高度探索的，该项目的化学成分d量化了边界的影响； Norightographe；在弯曲的边界和复杂形状上调查组装 - 对于许多应用来说，扩大了可以推进的模板材料的库。

项目成果

Boundary-Directed Epitaxy of Block Copolymers Toward Sub-10 nm Fabrication

面向亚 10 nm 制造的嵌段共聚物的边界定向外延

• DOI: 10.1149/11101.0011ecst
• 发表时间: 2023
• 期刊: ECS Transactions
• 作者: Su, Katherine Anna;Jacobberger, Robert;Stan, Liliana;Arnold, Michael Scott
• 通讯作者: Arnold, Michael Scott