Results 11 to 20 of about 5,555 (236)

Reinforcement Learning-Based Adaptive Control of a Piezo-Driven Nanopositioning System

IEEE Open Journal of the Industrial Electronics Society
This article proposes a new reinforcement learning (RL)-based adaptive control design for precision motion control of a two-degree-of-freedom piezoelectric XY nanopositioning system. In this design, an actor-critic structure is developed to eliminate the
Liheng Chen, Qingsong Xu
doaj   +2 more sources

Design and Analysis of a Novel Flexure-Based Dynamically Tunable Nanopositioner [PDF]

Micromachines, 2021
Various tools, such as biomedical manipulators, optical aligners, and ultraprecision manufacturing tools, implement nanopositioners that must be dynamically tunable to satisfy the requirements of different working conditions.
Zeying Li, Pengbo Liu, Peng Yan
doaj   +2 more sources

Near-Field Direct Writing Based on Piezoelectric Micromotion for the Programmable Manufacturing of Serpentine Structures [PDF]

Micromachines
Serpentine microstructures offer excellent physical properties, making them highly promising in applications in stretchable electronics and tissue engineering.
Xun Chen, Xuanzhi Zhang, Jianfeng Sun, Rongguang Zhang, Xuanyang Liang, Jiecai Long, Jingsong Yao, Xin Chen, Han Wang, Yu Zhang, Jiewu Leng, Renquan Lu   +11 more
doaj   +2 more sources

Tip-based nanofabrication below 40 nm combined with a nanopositioning machine with a movement range of Ø100 mm

Micro and Nano Engineering, 2023
In this paper, the combination of an advanced nanopositioning technique and a tip-based system, which can be used as an atomic force microscope (AFM) and especially for field emission scanning probe lithography (FESPL) is presented.
Jaqueline Stauffenberg, Michael Reibe, Anja Krötschl, Christoph Reuter, Ingo Ortlepp, Denis Dontsov, Steffen Hesse, Ivo W. Rangelow, Steffen Strehle, Eberhard Manske   +9 more
doaj   +2 more sources

LSTM-Inversion-Based Feedforward–Feedback Nanopositioning Control

Machines
This work proposes a two-degree of freedom (2DOF) controller for motion tracking of nanopositioning devices, such as piezoelectric actuators (PEAs), with a broad bandwidth and high precision.
Ruocheng Yin, Juan Ren
doaj   +2 more sources

Measurement Precision of a Planar Nanopositioning Machine with a Range of Motion of Ø100 mm

Applied Sciences, 2022
This work deals with various investigations into the accuracy of a newly developed planar nanopositioning machine. This machine, called Nanofabrication Machine 100 (NFM-100), has a positioning range of 100 mm in diameter.
Jaqueline Stauffenberg, Ingo Ortlepp, Johannes Belkner, Denis Dontsov, Enrico Langlotz, Steffen Hesse, Ivo Rangelow, Eberhard Manske   +7 more
doaj   +2 more sources

Capacitance Estimation for Piezoelectric Actuators, an Artificial Intelligence Approach

IET Science, Measurement & Technology
This research aimed to investigate charge‐based position estimation/control of piezo‐actuated nanopositioning systems using a data‐driven approach. In the analysis of these systems, piezoelectric actuators are widely approximated as capacitors with a ...
Zohreh Rafiei Samani, Morteza Mohammadzaheri, Mojtaba Ghodsi, Wenyan Wu, Nasser Sherkat, Houman Alipooramirabad   +5 more
doaj   +2 more sources

Rotating Gold Nanomotors for High-Resolution Mapping of Subcellular Nanomotions. [PDF]

Small Methods
A nanomotor‐based method uses optically driven, rotating gold nanorods to detect nanometer‐scale cellular movements with 10 nm spatial and millisecond temporal resolution. Applied to live endothelial cells, the technique reveals subcellular mechanical activity and distinct frequency regimes, capturing transient, localized oscillations.
Tornéus E, Hamngren Blomqvist C, Beck Adiels C, Šípová-Jungová H.   +3 more
europepmc   +2 more sources

Fabrication and verification of a single aligned nanofibre gas sensor based on non‐contact direct writing method

Electronics Letters, 2023
In this letter, the non‐contact direct writing method for producing single aligned fibre utilizing polyvinylpyrrolidone (PVP) polymer has been explored. It has been shown that with the help of this method, nanofibres can be created in a controlled manner
Sadegh Pouriyan Zadeh, Alireza Nikfarjam, Alireza Salavati Mohammadi   +2 more
doaj   +1 more source

Design and Characterization of a Planar Micro-Conveyor Device Based on Cooperative Legged Piezoelectric MEMS Resonators

Micromachines, 2022
This paper reports the design, fabrication, and performance of a hybrid piezoelectric planar micro-conveyor based on Micro-Electromechanical Systems (MEMS) bridge resonators and featuring 3D-printed vertical legs.
Víctor Ruiz-Díez, Abdallah Ababneh, Helmut Seidel, José Luis Sánchez-Rojas   +3 more
doaj   +1 more source