Laser-Induced Transfer of Functional Materials

Wai, Lee, Connie Kong; Pan, Yexin; Yang, Rongliang; Kim, Minseong; Li, Guijun

doi:10.1007/s41061-023-00429-6

Cited by 10 publications

(5 citation statements)

References 53 publications

(64 reference statements)

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“…LIFT is a technique in which a pulsed laser forces a transfer from a donor ink layer onto an acceptor substrate. The donor layer can be either solid or liquid, and a wide range of materials, including metal nanoparticles and biomaterials, are suitable for this technique [22]. LIFT is mainly a tool for the rapid and accurate creation of patterns on the substrate, but it is also possible to use it to fabricate three-dimensional structures [21,34].…”

Section: Laser-induced Forward Transfer (Lift)mentioning

confidence: 99%

Evolution of the Microrobots: Stimuli-Responsive Materials and Additive Manufacturing Technologies Turn Small Structures into Microscale Robots

den Hoed,

Carlotti,

Palagi

et al. 2024

Micromachines

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The development of functional microsystems and microrobots that have characterized the last decade is the result of a synergistic and effective interaction between the progress of fabrication techniques and the increased availability of smart and responsive materials to be employed in the latter. Functional structures on the microscale have been relevant for a vast plethora of technologies that find application in different sectors including automotive, sensing devices, and consumer electronics, but are now also entering medical clinics. Working on or inside the human body requires increasing complexity and functionality on an ever-smaller scale, which is becoming possible as a result of emerging technology and smart materials over the past decades. In recent years, additive manufacturing has risen to the forefront of this evolution as the most prominent method to fabricate complex 3D structures. In this review, we discuss the rapid 3D manufacturing techniques that have emerged and how they have enabled a great leap in microrobotic applications. The arrival of smart materials with inherent functionalities has propelled microrobots to great complexity and complex applications. We focus on which materials are important for actuation and what the possibilities are for supplying the required energy. Furthermore, we provide an updated view of a new generation of microrobots in terms of both materials and fabrication technology. While two-photon lithography may be the state-of-the-art technology at the moment, in terms of resolution and design freedom, new methods such as two-step are on the horizon. In the more distant future, innovations like molecular motors could make microscale robots redundant and bring about nanofabrication.

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Section: Laser-induced Forward Transfer (Lift)mentioning

confidence: 99%

Evolution of the Microrobots: Stimuli-Responsive Materials and Additive Manufacturing Technologies Turn Small Structures into Microscale Robots

den Hoed,

Carlotti,

Palagi

et al. 2024

Micromachines

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“…To eliminate the influence of the receiver during printing, switchable adhesives with easily removable adhesion are highly desired so that the inks can be printed onto arbitrary receivers in a noncontact way. Good attempts are to exploit the rapid local surface deformation from the evaporation of an absorbing layer, − the interfacial thermal mismatch, − the snap-through behavior of a buckled film, , or the microcavity pressure change. − Here, we report a simple yet robust design of switchable adhesive based on a thermal responsive SMP with micropillars of different heights for laser-driven noncontact transfer printing. This switchable adhesive takes advantage of the ultrastrong adhesion state of SMP by maximizing the contact area due to the high adaptation property − at a temperature above the glass transition temperature, ultralarge adhesion switch to the desired weak adhesion state by minimizing the contact area from the various levels of shape recovery of micropillars in a rapid manner.…”

Section: Introductionmentioning

confidence: 99%

Switchable Adhesive Based on Shape Memory Polymer with Micropillars of Different Heights for Laser-Driven Noncontact Transfer Printing

Luo,

Li,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Switchable adhesive is essential to develop transfer printing, which is an advanced heterogeneous material integration technique for developing electronic systems. Designing a switchable adhesive with strong adhesion strength that can also be easily eliminated to enable noncontact transfer printing still remains a challenge. Here, we report a simple yet robust design of switchable adhesive based on a thermally responsive shape memory polymer with micropillars of different heights. The adhesive takes advantage of the shape-fixing property of shape memory polymer to provide strong adhesion for a reliable pick-up and the various levels of shape recovery of micropillars under laser heating to eliminate the adhesion for robust printing in a noncontact way. Systematic experimental and numerical studies reveal the adhesion switch mechanism and provide insights into the design of switchable adhesives. This switchable adhesive design provides a good solution to develop laser-driven noncontact transfer printing with the capability of eliminating the influence of receivers on the performance of transfer printing. Demonstrations of transfer printing of silicon wafers, microscale Si platelets, and micro light emitting diode (μ-LED) chips onto various challenging nonadhesive receivers (e.g., sandpaper, stainless steel bead, leaf, or glass) to form desired two-dimensional or three-dimensional layouts illustrate its great potential in deterministic assembly.

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“…[19] Laser-induced momentum transfer can print the functional materials from donor to acceptor substrate, achieving additive manufacturing. [20] In addition, the localized heating can achieve drop-on-demand deposition of graphene or other functional materials, providing a high-efficiency manufacturing approach for many applications, including disinfection, [21] supercapacitors, [22] solar desalination, [23] and microfluidic devices. [24] Herein, we propose a laser-guided self-assembly strategy to convert 2D gold thin films into 3D micro-rolls.…”

Section: Introductionmentioning

confidence: 99%

Laser‐Guided Self‐Assembly of Thin Films into Micro‐Rolls

Chen,

Tan,

Yang

et al. 2024

Adv Funct Materials

Self Cite

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Advanced manufacturing techniques offer tremendous potential in electronics, photonics, and biomedicine. Self‐assembly is a powerful strategy for creating three‐dimensional (3D) artificial structures, but existing thin film release techniques have limitations in the relatively complex processes. Herein, a localized laser scribing strategy is proposed to guide the self‐assembly of two‐dimensional thin films into 3D microstructures. It is revealed that laser‐induced heating and momentum can release thin films and roll them into various microstructures. Uniquely, this method allows accurate control of shapes, curvatures, orientations, and sizes for the fabricated rolls. This is a one‐step strategy with no pre‐patterning or post‐drying required. The proposed method represents a significant improvement over existing self‐assembly techniques and may enrich the thin film self‐assembly materials and applications. As proof of concept, the prepared gold micro‐rolls are demonstrated as implanted stents in porcine arteries with impressive flexibility. This study provides a new approach to creating 3D microstructures with simplicity and high repeatability and has significant implications for the future of advanced manufacturing, especially in emerging miniaturized applications, such as invasive robotics, minimized drug delivery, implanted batteries, and nanophotonics.

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Laser-Induced Transfer of Functional Materials

Cited by 10 publications

References 53 publications

Evolution of the Microrobots: Stimuli-Responsive Materials and Additive Manufacturing Technologies Turn Small Structures into Microscale Robots

Evolution of the Microrobots: Stimuli-Responsive Materials and Additive Manufacturing Technologies Turn Small Structures into Microscale Robots

Switchable Adhesive Based on Shape Memory Polymer with Micropillars of Different Heights for Laser-Driven Noncontact Transfer Printing

Laser‐Guided Self‐Assembly of Thin Films into Micro‐Rolls

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