Continuous roller nanoimprinting: next generation lithography.

Nanoimprint lithography (NIL) is a cost-effective and high-throughput technique for replicating nanoscale structures that does not require expensive light sources for advanced photolithography equipment. NIL overcomes the limitations of light diffraction or beam scattering in traditional photolithography and is suitable for replicating nanoscale structures with high resolution. Roller nanoimprint lithography (R-NIL) is the most common NIL technique benefiting large-scale, continuous, and efficient industrial production.

Current and Future Perspectives on Microfluidic Tear Analytic Devices.

Most current invasive analytic devices for disease diagnosis and monitoring require the collection of blood, which causes great discomfort for patients and may potentially cause infection. This explains the great need for noninvasive devices that utilize other bodily fluids like sweat, saliva, tears, or urine. Among them, eye tears are easily accessible, less complex in composition, and less susceptible to dilution.

Ultrafast Microdroplet Generation and High-Density Microparticle Arraying Based on Biomimetic Nepenthes Peristome Surfaces.

Manipulation of massive droplets, particles, as well as cells has enabled wide applications. However, most existing technologies require complicated processes, operations, or external setup. This article demonstrates the employment of biomimetic peristome surfaces (NPS) in achieving ultrafast microdroplet generation and high-density microparticle arraying, with the assistance of curvature-induced Laplace pressure in slipping mode and evaporation-driven Marangoni effect in climbing mode, respectively.

High-throughput Droplet Array Generated by Roller Nanoimprint Lithography with Biomimetic Surfaces.

For the first time, we exploited a novel pump-free and high-throughput droplet generation method using the roller nanoimprint technology on biomimetic peristome surface of nepenthes. The biomimetic nepenthes peristome surfaces with oblique re-entrant microcavities and sharp edges led to facile directional liquid filling and high-efficiency droplet generation under the roller embossing, and the sealant on polyethylene terephthalate (PET) substrate encapsulated thousands of microcavities to form a high-density droplet array with good uniformity.