Results 21 to 30 of about 22,198 (264)

A valveless micro impedance pump driven by electromagnetic actuation [PDF]

open access: yes, 2005
Over the past two decades, a variety of micropumps have been explored for various applications in microfluidics such as control of pico- and nanoliter flows for drug delivery as well as chemical mixing and analysis.
Gharib, Morteza   +2 more
core   +1 more source

Tunable MEMS VCSEL on Silicon substrate [PDF]

open access: yes, 2019
We present design, fabrication and characterization of a MEMS VCSEL which utilizes a silicon-on-insulator wafer for the microelectromechanical system and encapsulates the MEMS by direct InP wafer bonding, which improves the protection and control of the ...
Ansbæk, Thor   +6 more
core   +2 more sources

A chip-scale integrated cavity-electro-optomechanics platform [PDF]

open access: yes, 2011
We present an integrated optomechanical and electromechanical nanocavity, in which a common mechanical degree of freedom is coupled to an ultrahigh-Q photonic crystal defect cavity and an electrical circuit.
A. H. Safavi-Naeini   +42 more
core   +4 more sources

Microfluidic systems for biosensing [PDF]

open access: yes, 2010
In the past two decades, Micro Fluidic Systems (MFS) have emerged as a powerful tool for biosensing, particularly in enriching and purifying molecules and cells in biological samples.
Liu, Kuo-Kang   +5 more
core   +1 more source

Analysis of Frequency Adjustable Control of Permanent Magnet Synchronous Motor for Pump-controlled Actuators

open access: yesInternational Journal of Fluid Power, 2023
Recently the pump-controlled system has actively been proposed as a replacement for conventional valve-controlled systems, to improve the energy efficiency in non-road mobile machinery. Earlier research demonstrated that a pump-controlled hydraulic system combines the best properties of traditional hydraulics and electric intelligence.
Minav Tatiana, Zakharov Viacheslav
openaire   +1 more source

Dual Q-switched laser outputs from a single lasing medium using an intracavity MEMS micromirror array [PDF]

open access: yes, 2012
An intracavity array of individually controlled microelectromechanical system scanning micromirrors was used to actively Q-switch a single side-pumped Nd:YAG gain medium.
Bauer   +16 more
core   +1 more source

An Electromagnetically-Actuated All-PDMS Valveless Micropump for Drug Delivery

open access: yesMicromachines, 2011
This paper presents the fabrication process of a single-chamber planar valveless micropump driven by an external electromagnetic actuator. This micropump features a pair of micro diffuser and nozzle elements used to rectify the fluid flow, and an elastic
Farid Amirouche, Yu Zhou
doaj   +1 more source

Improving performance of pump-controlled hydraulic circuits for single-rod actuators: conceptual study

open access: yesJournal of Physics: Conference Series, 2023
Abstract Pump-controlled hydraulic circuits are more efficient than conventional valve-controlled ones. Pump-controlled hydraulic circuits for double rod cylinders are well developed and, presently, implemented in many applications including aviation.
A Imam, M S Tolba, N Sepehri
openaire   +1 more source

Analysis of Field Oriented Control of Permanent Magnet Synchronous Motor for a Valveless Pump-Controlled Actuator [PDF]

open access: yesThe 1st International Electronic Conference on Actuator Technology: Materials, Devices and Applications, 2020
Earlier research demonstrated that a pump-controlled hydraulic system combines the best properties of traditional hydraulics and electric intelligence. Thus, the new system has been proposed as a replacement for conventional valve-controlled systems, to improve the energy efficiency in non-road mobile machinery in particularly.
Viacheslav Zakharov, Tatiana Minav
openaire   +2 more sources

Investigation of an Intellectual Tracking System Using the Intelligent Controller for Infusion Pump in Medical Applications [PDF]

open access: yesBrazilian Archives of Biology and Technology
The paper proposes design and investigates controllers for infusion pump systems to actuate air control flow with improved performance. The actuator is realized with a permanent magnet brushless DC motor controlled by a self-tune PID controller replaced ...
Arulmozhiyal Ramaswamy, Murali Muniraj
doaj   +1 more source

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