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O: Fachverband Oberflächenphysik

O 54: Focus Session: Scanning Probe Microscopy with Quartz Sensors II

O 54.4: Talk

Wednesday, March 29, 2023, 16:00–16:15, CHE 89

Nanosacle 3D printing technique by using the nanopipette-combined quartz tuning fork-atomic force microscope — •Sangmin An — Department of Physics, Institute of Photonics and Information Technology, Jeonbuk National University, Jeonju 54896, South Korea

Materials can be classified by hardness, such as gold represented by hard materials having elasticity and water represented by soft materials having viscosity. However, at the nanoscale, even solid gold exhibits viscosity [1], while liquid water also exhibits elasticity [2] revealed by a quartz tuning fork-atomic force microscope (QTF-AFM), which has the intrinsic properties of high stiffness and high sensitivity. In this presentation, I discuss how this QTF-AFM can be applied as the nanoscale 3D printing technique combined with nanopipette [3,4], which are typically used in biotechnology, along with showing the results of the elasticity and viscosity of water. In addition, I share the results of nanoscratching [5] and nanosensor [6] schemes which can be realized with the nanorod-combined QTF-AFM instead of nanopipette.

[1] Nature 569, 393-397 (2019).

[2] Phys. Rev. X 8, 041046 (2018).

[3] Nano-Micro Lett. 14, 13 (2022).

[4] Nanoscale Adv. in press (2022).

[5] Appl. Nanosci. 9, 67-76 (2019).

[6] Proc. Natl. Acad. Sci. USA 115(12), 2884-2889 (2018).