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Pick-and-Place Transfer of Arbitrary-Metal Electrodes for van der Waals Device Fabrication.
ACS Nano
January 2025
School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia.
Van der Waals electrode integration is a promising strategy to create nearly perfect interfaces between metals and 2D materials, with advantages such as eliminating Fermi-level pinning and reducing contact resistance. However, the lack of a simple, generalizable pick-and-place transfer technology has greatly hampered the wide use of this technique. We demonstrate the pick-and-place transfer of prefabricated electrodes from reusable polished hydrogenated diamond substrates without the use of any sacrificial layers due to the inherent low-energy and dangling-bond-free nature of the hydrogenated diamond surface.
View Article and Find Full Text PDFMultifunctional Janus particles composed of inorganic nanoparticles through emulsion confined assembly.
Phys Chem Chem Phys
January 2025
College of Chemistry, Changchun Normal University, Changchun 130032, China.
Janus particles, consisting of two or more chemically distinct composites within a single structural system, have attracted significant attention for their solid surfactant functionality, as well as their potential applications in micro/nanomotors and functional materials. Here, we present a simple and robust method to prepare plasmonic Janus particles consisting of a polystyrene-tethered gold nanorod (AuNRs@PS) head and a poly(4-vinylpyridine) (P4VP) head through emulsion confined assembly. The balance of the Janus particles can be finely tuned by adjusting the volume ratio of the AuNRs@PS solution and P4VP solution.
View Article and Find Full Text PDFSelf-Extracting Dextran-Based Hydrogel Microneedle Arrays with an Interpenetrating Bioelectroenzymatic Sensor for Transdermal Monitoring with Matrix Protection.
Adv Healthc Mater
January 2025
Department of Molecular Chemistry, Univ. Grenoble Alpes-CNRS, 38041 Grenoble, France.
Continuous glucose monitors have revolutionized diabetes management, yet such devices are limited by their cost, invasiveness, and stability. Microneedle (MN) arrays could offer improved comfort compared to invasive implanted or mm-sized needle devices, but such arrays are hampered by complex fabrication processes, limited mechanical and sensor stability, and/or cytotoxicity concerns. This work demonstrates the first crosslinked hydrogel microneedle-bioelectroenzymatic sensor arrays capable of biomarker extraction and robust transdermal continuous monitoring in artificial interstitial fluid for 10 days.
View Article and Find Full Text PDFSubdural drain with Nelaton catheter and latex glove, a low-cost alternative and how to make it.
Surg Neurol Int
September 2024
Department of Neurosurgery, Specialties Hospital, La Raza National Medical Center, Seris y Zaachila S/N, Mexico City, Mexico.
Article Synopsis
- Subdural hematoma is a common surgical issue in neurosurgery, but prefabricated drains are often inconsistently available due to various factors.
- A research study analyzed the costs of different subdural drain options, revealing that available prefabricated drains can be quite expensive ($25 to $150), prompting the need for a low-cost alternative.
- A guide for creating handmade subdural drains was developed, which emphasizes affordability and accessibility, especially for surgeons in developing countries, as these alternatives can be made for around $5.
Controlling phase separations and reactions in trapped microfluidic droplets.
Sci Rep
September 2024
Experimental Physics I, University of Bayreuth, Universitätsstr. 30, 95447, Bayreuth, Germany.
Microfluidics and droplet-based assays are the basis for numerous high-throughput experiments, including bio-inspired microreactors and selection platforms for directed evolution. While elaborate techniques are available for the production of picoliter-sized droplets, there is an increasing demand for subsequent manipulation and control of the droplet interior. Here, we report on a straightforward method to rapidly adjust the size of single to several hundred double-emulsion droplets in a microfluidic sieve by varying the carrier fluid's salt concentration.
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