Magnetically responsive microprintable soft nanocomposites with tunable nanoparticle loading

Magnetic remote actuation of soft materials is attractive for applications such as transforming materials and medical robots. However, due to manufacturing limitations, microscale magnetoactive devices are scarce and light-based additive manufacturing methods, despite achieving microscale resolution, struggle with particle-induced light scattering. Moreover, large hard-magnetic microparticles restrict ultimate feature sizes and deformation of soft-magnetic nanoparticle composites […]

Nano-Printed Spiral Phase Plate on Fiber Ferrules for Modal Filtering in Free-Space Optical Communications

In this work, we demonstrate the fabrication as well as immediate application of 3D printed spiral phase plates on the ends of FC/PC fiber adapter ferrule tips using a NanoOne 1000 two-photon polymerization 3D printer from UpNano. The spiral phase plates were fabricated to alter the orbital angular momentum of incoming light, and a direct […]

Two-Photon Polymerized Poly(ε-caprolactone) Microstructures with Shape-Memory Behavior Under Compressive Loading

Shape memory polymers capable of recovering their original form after deformation are highly desirable for applications in soft robotics, biomedical engineering, and microfabrication. However, integrating shape memory properties into 3D-printed microstructures with ultra-low mass remains a challenge, as most existing systems lack sufficient resolution or mechanical robustness at the microscale. In this study, a poly(ε-caprolactone)-based […]

External Reflection From Two-Photon Laser-Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

Optically driven robotic actuators are synthetic materials capable of reversible shape-morphing under the control of incident light.Conventional approaches typically require a favorable illumination condition, that is small incidence angle excitement coveringlarge sample area, which poses challenges for optical integration and applicability in optically restricted environments. Here,we present a method that utilizes two-photon polymerization laser-printing of […]

Rapid Prototyping of Metallic Cantilevers for High-Q-Value Micro-Mechanical Oscillators (MMOS)

Resonant metallic structures are crucial for telecommunications, biosensors, and microrobotics. However, it presents challenges in obtaining high-quality metallic structures using traditional microfabrication methods. Here, we present a rapid prototyping method that combines two-photon polymerization and electrochemical etching to achieve metallic cantilevers of submillimeter sizes for Micro-Mechanical Oscillators (MMOSs). A mask with cantilever designs for selective […]