Laser- driven noncontact bubble transfer printing via a hydrogel composite stamp

• 成果类型: Article
• 署名作者: Li, Chenglong; Luo, Hongyu; Lin, Xinyi; Zhang, Shun; Song, Jizhou
• 署名单位: Zhejiang University; Zhejiang University; Zhejiang University; Zhejiang University; Tsinghua University
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-13083
• DOI: 10.1073/pnas.2318739121
• 发表日期: 2024-01-30
• 关键词: elastomeric surfaces; reversible adhesion

摘要

Transfer printing that enables heterogeneous integration of materials into spatially organized, functional arrangements is essential for developing unconventional electronic systems. Here, we report a laser- driven noncontact bubble transfer printing via a hydrogel composite stamp, which features a circular reservoir filled with hydrogel inside a stamp body and encapsulated by a laser absorption layer and an adhesion layer. This composite structure of stamp provides a reversible thermal controlled adhesion in a rapid manner through the liquid-gas phase transition of water in the hydrogel. The ultrasoft nature of hydrogel minimizes the influence of preload on the pick - up performance, which offers a strong interfacial adhesion under a small preload for a reliable damage - free pick - up. The strong light - matter interaction at the interface induces a liquid-gas phase transition to form a bulge on the stamp surface, which eliminates the interfacial adhesion for a successful noncontact printing. Demonstrations of noncontact transfer printing of microscale Si platelets onto various challenging nonadhesive surfaces (e.g., glass, key, wrench, steel sphere, dry petal, droplet) in two- dimensional or three- dimensional layouts illustrate the unusual capabilities for deterministic assembly to develop unconventional electronic systems such as flexible inorganic electronics, curved electronics, and micro - LED display.