An atomic force microscope study revealed two mechanisms in the effect of anticancer drugs on rate-dependent Young's modulus of human prostate cancer cells

J Ren, H Huang, Y Liu, X Zheng, Q Zou - PloS one, 2015 - journals.plos.org
Mechanical properties of cells have been recognized as a biomarker for cellular cytoskeletal
organization. As chemical treatments lead to cell cytoskeletal rearrangements, thereby …

Development and analysis of a dynamic model for parasitic motion principle piezoelectric actuator

J Wang, H Huang, Z Wang, F Qin, H Zhao - Mechanical Systems and Signal …, 2021 - Elsevier
The main goal of this paper is studying characteristics of the parasitic motion principle (PMP)
piezoelectric actuator and providing a dynamic model for possible control and optimization …

Linearization of recurrent-neural-network-based models for predictive control of nano-positioning systems using data-driven Koopman operators

S Xie, J Ren - IEEE Access, 2020 - ieeexplore.ieee.org
Recent studies have shown that the nonlinear dynamics of nano-positioning systems (eg,
piezo-electric actuators (PEAs)) can be accurately captured by recurrent neural networks …

Optimal data-driven difference-inversion-based iterative control: High-speed nanopositioning tracking example

Z Zhang, Q Zou - IEEE Transactions on Control Systems …, 2022 - ieeexplore.ieee.org
In this article, an optimal data-driven difference-inversion-based iterative control (ODDD-IIC)
method is proposed for high-speed precision tracking in the presence of dynamics changes …

Measuring the elastic modulus of thin polymer sheets by elastocapillary bending

J Bae, T Ouchi, RC Hayward - ACS Applied Materials & Interfaces, 2015 - ACS Publications
We describe bending by liquid/liquid or liquid/air interfaces as a simple and broadly
applicable technique for measuring the elastic modulus of thin elastic sheets. The balance …

Active control of acoustics-caused nano-vibration in atomic force microscope imaging

S Yi, T Li, Q Zou - Ultramicroscopy, 2018 - Elsevier
In this paper, we propose a finite-impulse-response (FIR)-based feedforward control
approach to mitigate the acoustic-caused probe vibration during atomic force microscope …

Joining dissimilar materials using friction stir scribe technique

P Upadhyay, Y Hovanski… - Journal of …, 2017 - asmedigitalcollection.asme.org
Development of a robust and cost-effective method of joining dissimilar materials could
provide a critical pathway to enable widespread use of multimaterial designs and …

Data-driven dynamics-based optimal filtering of acoustic noise at arbitrary location in atomic force microscope imaging

J Chen, Q Zou - Ultramicroscopy, 2022 - Elsevier
This paper presents a post-filtering approach to eliminate distortions in atomic force
microscope (AFM) images caused by acoustic noise from an unknown location. AFM …

A stick-slip actuator for suppressing the backward motion by introducing a flexible beam

H Li, J Wang, Z Xu, F Qin, Z Wang… - Journal of Intelligent …, 2023 - journals.sagepub.com
Stick-slip actuators are in high demand in both scientific research and industrial
applications. However, backward motion in stick-slip actuators has greatly limited further …

[HTML][HTML] Note: Precision control of nano-positioning stage: An iterative learning-based model predictive control approach

S Xie, J Ren - Review of Scientific Instruments, 2018 - pubs.aip.org
Due to mechanical vibration and nonlinearities such as hysteresis and creep effect, it is
difficult to achieve precise control of nano-positioning stages for high-speed/bandwidth …