Category: Nanotech
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Programmable DNA origamis enable targeted drug delivery
Nov 24, 2023 (Nanowerk News) For decades, researchers have sought improved control over the distribution and activity of therapeutic drugs to minimize adverse side effects while maximizing efficacy. Most approved drugs like small molecules and monoclonal antibodies operate systemically with little innate precision over where they accumulate in the body and how long they persist.…
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Biohybrid microrobots could remove micro- and nano-plastics from aquatic environments
Schematic illustration of micro/nanoplastics captured by MARs. Credit: Diogo Pinheiro. Seas, oceans, rivers, and other bodies of water on Earth have become increasingly polluted over the past decades, and this is threatening the survival of many aquatic species. This pollution takes a wide range of forms, including the proliferation of so-called micro and nano plastics.…
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A new method for peptide sequencing based on nanopore sensing technology
Nov 24, 2023 (Nanowerk News) A recent study published in Nature Methods (“Peptide sequencing based on host–guest interaction-assisted nanopore sensing”) showcases the development of a revolutionary protein sequencing technology, promising significant advances in the fields of proteomics and clinical diagnostics. This research, led by Prof. Haichen Wu from the Institute of Chemistry, Chinese Academy of…
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Butterfly-Eyed Sensors Capture UV Images
The compound eyes of an insect are structurally very different from that of a human—almost a separate category of organ altogether from the more familiar ocular arrangement of lens, cornea, iris, and retina. For instance, Papillio xuthus, the Asian Swallowtail Butterfly, can see wavelengths of light in the ultraviolet spectrum, far beyond the limits of…
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Unlocking the potential of digital manufacturing for ready-to-use microfluidics
Nov 24, 2023 (Nanowerk Spotlight) For decades, microfluidics has held promise as a revolutionary technology, yet widespread adoption outside research labs has remained elusive. Microfluidic devices enable precise control of tiny volumes of fluid for automated chemical and biological analysis, offering potential breakthroughs in medical testing and diagnostics. However, manufacturing constraints have impeded the field.…
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Magnetic graphene for low-power electronics
Nov 24, 2023 (Nanowerk News) National University of Singapore (NUS) physicists have developed a concept to induce and directly quantify spin splitting in two-dimensional materials. By using this concept, they have experimentally achieved large tunability and a high degree of spin-polarisation in graphene. This research achievement can potentially advance the field of two-dimensional (2D) spintronics,…
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A motion characteristics modeled angular position sensor by nonlinear transfer of differential capacitance for miniaturized scanning mirrors
The proposed APS system The proposed sensor system architecture consists of three main components. The yellow plate represents the M-SM, which rotates around the x- and y-axes with scanning angles of θx and θy, respectively (Fig. 1a). Beneath the M-SM lies an APS consisting of four conductive metal pole plates (colored brown) and a CTDC…
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Autonomous nanorobots with powerful thrust under dry solid-contact conditions by photothermal shock
Materials and fabrication Single-crystal Au and Pd nanomaterials used in our work were synthesized by the thermal evaporation method35. ZnO micropillars and CdSe nanowires were synthesized by the vapor–liquid–solid process40. We used different micro/nanomaterials as building blocks to assemble our HOUbot in Fig. 4d (main text). Pd nanoplates and ZnO nanopillars were mechanically dispersed on a…
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3D bioprinted multilayered cerebrovascular conduits to study cancer extravasation mechanism related with vascular geometry
Optimal formulation of hybrid BdECM bioink for in-bath 3D triaxial bioprinting An appropriate bioink is a prerequisite for successful in-bath 3D triaxial bioprinting. To elaborate 3D constructs with high printability and structural stability, bioinks exhibiting suitable rheological characteristics should be used. Therefore, a hybrid brain-derived decellularized extracellular matrix (BdECM) bioink comprising BdECM and alginate was…
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The role of halogens in Au–S bond cleavage for energy-differentiated catalysis at the single-bond limit
Monitor the Au–S bond-breaking process Specifically, a π-conjugated molecule (2,6-bis(((4-acetylthio)phenyl)ethynyl) antracene) with acetylthiol (–SAc) terminal groups, denoted as AC–SAc (Supplementary Fig. 3), is used for the study. The S atom at the end of the AC–SAc molecule and the Au atom on the gold electrode will form an Au–S bond, which will break during the stretching…