Programme

O.5 -- Oral, VCTP-48

Date: Monday, 31 July 2023

Time: 16:25 - 16:50

High-harmonic frequencies in overhang- and T-shaped microcantilevers

Le Tri Dat (1,2), Hong-Hanh Nguyen (3), and Nguyen Duy Vy (4,5)

(1) Computational Laboratory for Advanced Materials and Structures, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam (2) Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam (3) Faculty of Physics and Engineering Physics, University of Science-VNU-HCM, Ho Chi Minh City, Vietnam (4) Laboratory of Applied Physics, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Vietnam (5) Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Vietnam letridat@tdtu.edu.vn, nguyenduyvy@vlu.edu.vn

Microcantilever is in the heat of Atomic Force Microscope with versatile functions and applications in vibration transducing, energy harvesting, and highly sensitive measurement. To enhance the measurement sensitivity and bandwidth, several approaches have been exploited on the cantilever structure, such as using multi-mode transduction. For higher-order modes, changing the cross-section is usually used where several holes or cut on the cantilever surface are made. Here, we propose a much simpler structure where the cantilever involves two parts with different widths, the overhang- or T-shaped cantilever. We have shown analytically that the higher-order modes could be tuned to be a multiple of the lower frequency, i.e. the high-harmonic frequencies are obtained. We commented on the potential of using this structure on the real fabrication and application

Presenter: Nguyễn Duy Vỹ