المؤلفون: Nolan Lassaline

المصدر: JPhys Materials, Vol 7, Iss 1, p 015008 (2023)

مصطلحات موضوعية: thermal scanning-probe lithography, nanophotonics, nanoelectronics, 2D materials, graphene, Fourier surfaces, Materials of engineering and construction. Mechanics of materials, TA401-492, Physics, QC1-999

الوصف: Scanning probe microscopy (SPM) uses a sharp tip to interrogate surfaces with atomic precision. Inputs such as mechanical, electrical, or thermal energy can activate highly localized interactions, providing a powerful class of instruments for manipulating materials on small length scales. Thermal scanning-probe lithography (tSPL) is an advanced SPM variant that uses a silicon tip on a heated cantilever to locally sublimate polymer resist, acting as a high-resolution lithography tool and a scanning probe microscope simultaneously. The main advantage of tSPL is the ability to electrically control the temperature and applied force of the tip, which can produce smooth topographical surfaces that are unattainable with conventional nanofabrication techniques. Recent investigations have exploited these surfaces to generate potential landscapes for enhanced control of photons, electrons, excitons, and nanoparticles, demonstrating a broad range of experimental possibilities. This paper outlines the principles, procedures, and limitations of tSPL for generating smooth potentials and discusses the prospective impact in photonics, electronics, and nanomaterials science.

وصف الملف: electronic resource

Relation: https://doaj.org/toc/2515-7639

URL الوصول: https://doaj.org/article/ad13271fe18245acbcf7ca97fadd144c

المؤلفون: Nolan Lassiter, Nhia Yang, Lakshma Tiyyagura, K. Scott Whitlow

المصدر: Clinical Practice and Cases in Emergency Medicine, Vol 4, Iss 4 (2020)

مصطلحات موضوعية: Medical emergencies. Critical care. Intensive care. First aid, RC86-88.9

الوصف: Introduction: Silica gel packets are commonly used desiccants for medication products; these packets generally only pose a choking risk in young children. However, new cylindrical desiccant canisters have been developed, which may increase the risk for obstruction in adults. Case Report: An elderly male presented to the emergency department complaining of difficulty swallowing after taking his morning medications. Through a diligent work-up a desiccant canister was found lodged in the lower esophageal sphincter. The patient was endotracheally intubated and a Roth Net retriever was used to remove the canister. Conclusion: Cylindrical desiccant canisters pose an increased risk of esophageal obstruction.

وصف الملف: electronic resource

Relation: https://escholarship.org/uc/item/7j86n0bs; https://doaj.org/toc/2474-252X

URL الوصول: https://doaj.org/article/26a8df149656459ab28ba2fd1e310495

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