Jiang Jing, Li Chenglong, Chen Chenhong, Shi Chuanqian, Song Jizhou
Department of Engineering Mechanics, Soft Matter Research Center, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, and State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou, 310027, China.
Center for Mechanics Plus under Extreme Environments, Ningbo University, Ningbo, 315211, China.
Adv Mater. 2024 Jul;36(29):e2314004. doi: 10.1002/adma.202314004. Epub 2024 May 23.
Transfer printing techniques based on tunable and reversible adhesives enable the heterogeneous integration of materials in desired layouts and are essential for developing both existing and envisioned electronic systems. Here, a novel tunable and reversible adhesive of liquid metal ferrofluid pillars for developing an efficient magnetically actuated noncontact transfer printing is reported. The liquid metal ferrofluid pillars offer the appealing advantages of gentle contact force by minimizing the preload effect and exceptional shape adaptability by maximizing the interfacial contact area due to their inherent fluidity, thus enabling a reliable damage-free pickup. Moreover, the liquid metal ferrofluid pillars harness the rapid stiffness increase and shape change with the magnetic field, generating an instantaneous ejection force to achieve a receiver-independent noncontact printing. Demonstrations of the adhesive of liquid metal ferrofluid pillars in transfer printing of diverse objects with different shapes, materials and dimensions onto various substrates illustrate its great potential in deterministic assembly.
基于可调谐和可逆粘合剂的转移印刷技术能够将材料以所需布局进行异质集成，这对于开发现有和设想中的电子系统至关重要。在此，报道了一种用于开发高效磁驱动非接触式转移印刷的新型液态金属铁磁流体柱可调谐和可逆粘合剂。液态金属铁磁流体柱具有吸引人的优点，通过最小化预载效应实现温和的接触力，并且由于其固有的流动性通过最大化界面接触面积而具有出色的形状适应性，从而实现可靠的无损伤拾取。此外，液态金属铁磁流体柱利用磁场作用下快速的刚度增加和形状变化，产生瞬时弹射力以实现与接收器无关的非接触式印刷。将液态金属铁磁流体柱粘合剂用于将具有不同形状、材料和尺寸的各种物体转移印刷到各种基板上的演示，说明了其在确定性组装方面的巨大潜力。
