Results 21 to 30 of about 22,047 (273)

Materials science and the sensor revolution [PDF]

open access: yes, 2010
For the past decade, we have been investigating strategies to develop ways to provide chemical sensing platforms capable of long-term deployment in remote locations1-3.
Benito-Lopez, Fernando   +2 more
core   +1 more source

A Pump-Controlled Circuit for Single-Rod Cylinders that Incorporates Limited Throttling Compensating Valves

open access: yesActuators, 2018
Valve-controlled hydraulic actuation systems are favored in many applications due to their fast response, high power-to-weight ratio, and stability under variable working conditions. Efficiency, however, is the main disadvantage of these systems.
Ahmed Imam   +3 more
doaj   +1 more source

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

A centrifugo-magnetically actuated gas micropump [PDF]

open access: yes, 2006
This paper describes a novel gas micropump on a centrifugal microfluidic platform. The pump is integrated on a passive and microstructured polymer disk which is sealed with an elastomer lid featuring paramagnetic inlays.
Ducrée, Jens   +3 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

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

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

Personal Food Computer: A new device for controlled-environment agriculture [PDF]

open access: yes, 2017
Due to their interdisciplinary nature, devices for controlled-environment agriculture have the possibility to turn into ideal tools not only to conduct research on plant phenology but also to create curricula in a wide range of disciplines.
Brander, Gordon   +6 more
core   +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

Electronic control of elastomeric microfluidic circuits with shape memory actuators [PDF]

open access: yes, 2008
Recently, sophisticated fluidic circuits with hundreds of independent valves have been built by using multi-layer soft-lithography to mold elastomers.
Adalian, Dvin   +4 more
core   +1 more source

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