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Anna Bazan,Paweł Turek,Łukasz Przeszłowski 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.3
The paper aims to analyze the InfiniteFocus system for the capability to measure macrogeometry of tooth models manufactured using two material extrusion techniques, i.e. MEM and FFF, and analyze the accuracy of manufacturing the said models. To achieve the goals it was needed to carry out two studies. The first one focused on estimating the measurement error of the microscope in the course of digitalizing geometry with the use of a rotary table. The research involved samples of cylindrical and spherical geometries. In the result further measurements of tooth model in the second stage were decided to be performed using vertical resolution 10 µm and overlap 70 %. For these settings, the absolute values of the mean measurement error for the MEM and FFF samples were about 0.01 mm. From 95 % to 98 % of points measured for all the tooth models were contained in the assumed tolerance range of ±0.25 mm for dental models.
Rapid Ultrasensitive Single Particle Surface-Enhanced Raman Spectroscopy Using Metallic Nanopores
Cecchini, Michael P.,Wiener, Aeneas,Turek, Vladimir A.,Chon, Hyangh,Lee, Sangyeop,Ivanov, Aleksandar P.,McComb, David W.,Choo, Jaebum,Albrecht, Tim,Maier, Stefan A.,Edel, Joshua B. American Chemical Society 2013 NANO LETTERS Vol.13 No.10
<P>Nanopore sensors embedded within thin dielectric membranes have been gaining significant interest due to their single molecule sensitivity and compatibility of detecting a large range of analytes, from DNA and proteins, to small molecules and particles. Building on this concept we utilize a metallic Au solid-state membrane to translocate and rapidly detect single Au nanoparticles (NPs) functionalized with 589 dye molecules using surface-enhanced resonance Raman spectroscopy (SERRS). We show that, due to the plasmonic coupling between the Au metallic nanopore surface and the NP, signal intensities are enhanced when probing analyte molecules bound to the NP surface. Although not single molecule, this nanopore sensing scheme benefits from the ability of SERRS to provide rich vibrational information on the analyte, improving on current nanopore-based electrical and optical detection techniques. We show that the full vibrational spectrum of the analyte can be detected with ultrahigh spectral sensitivity and a rapid temporal resolution of 880 μs.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2013/nalefd.2013.13.issue-10/nl402108g/production/images/medium/nl-2013-02108g_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl402108g'>ACS Electronic Supporting Info</A></P>