Investigating Porous Media for Relief Printing Using Micro‐Architected Materials

Gallegos, Michael A.; Garcia, Chelsea M.; Schunk, Peter Randall; White, Benjamin; Boyce, Brad Lee; Secor, Ethan B.; Kaehr, Bryan

doi:10.1002/adem.202000548

Cited by 2 publications

(3 citation statements)

References 25 publications

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“…Additionally, the effective modulus of IP‐S resin, in the MPa range, can be tuned with printing parameters. [ 51 ] And therefore component spring constant can be engineered with part thickness and geometry depending on application. New designs in this modular system will enable tools for capture, manipulation, and release in a variety of environmental conditions.…”

Section: Resultsmentioning

confidence: 99%

A Stiff‐Soft Composite Fabrication Strategy for Fiber Optic Tethered Microtools

Kaufman

Jiménez

Bradshaw

et al. 2023

Adv Materials Technologies

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The ability to capture, manipulate, and release microscale objects using autonomous systems can enable widespread applications—from microsurgery and selective cell extraction to the assembly of complex microdevices. With continuing development of smart and environmentally responsive materials compatible with 3D printing, microgrippers with environmental adaptability can give rise to biocompatible devices. In this paper, the design, fabrication, and testing of hybrid stiff‐soft microgrippers using compliant synthetic polymers and hydrogels to achieve autonomous actuation while avoiding an overly complex mechanical gripping system are described. Building microgrippers using 2‐photon polymerization additive manufacturing based on nonplanar, bioinspired architectures on the end of an optical fiber is investigated. To control actuation, current regulated growth of hydrogels within the printed architecture is demonstrated. Forces are generated by expansive gels actuated by changes in pH, temperature, and application of light via optical fiber. The resulting multimaterial actuators incorporate inert skeletal components with active hydrogels on the tip of a 200 µm diameter core fiber. The response time, accuracy, and cyclic durability of hybrid grippers are evaluated. This work provides a foundation to integrate stimuli‐responsive mechanical functions with microscale optical devices to expand the suite of tools available for minimally invasive surgical procedures.

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Section: Resultsmentioning

confidence: 99%

A Stiff‐Soft Composite Fabrication Strategy for Fiber Optic Tethered Microtools

Kaufman

Jiménez

Bradshaw

et al. 2023

Adv Materials Technologies

Self Cite

View full text Add to dashboard Cite

show abstract

“…Letterpress printing, one of the oldest printing technologies, involves creating a raised plate, coating it with ink, and then transferring the ink to paper by applying pressure. 39 In our method, modified DNA origami is used as a letterpress printing plate and functionalized gold nanoparticles (AuNPs) are used as ink to cyclically produce predesigned gold nanostructures (Scheme 1). The DNA origami letterpress printing plate (DNA printing plate) is created by extending and locating strands on specific sites of the DNA origami.…”

mentioning

confidence: 99%

“…In this study, we develop a novel letterpress printing method based on DNA origami to synthesize gold nanostructures with predesigned morphologies. Letterpress printing, one of the oldest printing technologies, involves creating a raised plate, coating it with ink, and then transferring the ink to paper by applying pressure . In our method, modified DNA origami is used as a letterpress printing plate and functionalized gold nanoparticles (AuNPs) are used as ink to cyclically produce predesigned gold nanostructures (Scheme ).…”

mentioning

confidence: 99%