Results 11 to 20 of about 5,552 (189)

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

A Digital Observer-Based Repetitive Learning Composite Control Method for Large Range Piezo-Driven Nanopositioning Systems

Machines, 2022
In this study, a novel digital compound compensation method is proposed to compensate for the hysteresis nonlinearity and the drift disturbance of a piezoelectric nanopositioning system with a large range.
Cunhuan Liu, Yongchun Fang, Yinan Wu, Zhi Fan   +3 more
doaj   +1 more source

Scanning effects in coherent fourier scatterometry [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
Incoherent Fourier Scatterometry (IFS) is a successful tool for high accuracy nano-metrology. As this method uses only far field measurements, it is very convenient from the point of view of industrial applications.
Roy S., El Gawhary O., Kumar N., Pereira S. F., Urbach H. P.   +4 more
doaj   +1 more source

Linear Matrix Inequality Approach to Designing Damping and Tracking Control for Nanopositioning Application

Vibration, 2022
This paper presents a method to extend the eigenstructure assignment based design of the Positive Position Feedback (PPF) damping controller to the family of well-known second-order Positive Feedback Controllers (PFC) namely: (i) the Positive Velocity ...
Adedayo K. Babarinde, Sumeet S. Aphale
doaj   +1 more source

Fixed-Time Third-Order Super-Twisting-like Sliding Mode Motion Control for Piezoelectric Nanopositioning Stage

Mathematics, 2021
This paper presents a novel third-order super-twisting-like integral sliding mode controller (3-ISMC) for trajectory tracking of nanopositioning applications.
Guangwei Wang, Bo Wang, Chengxi Zhang
doaj   +1 more source