Results 51 to 60 of about 334 (147)

Breaking the Cardiovascular Flow Barrier for Dielectric Elastomer Actuator‐Based Pumping: Design and Characterization

open access: yesAdvanced Engineering Materials, Volume 27, Issue 2, January 2025.
This article presents the design and characterization of a high‐performance tubular dielectric elastomer pump for cardiovascular applications. Three pump designs, tested under varying internal pressures (15, 70, and 120 mmHg), reveal significant performance variations.
Amine Benouhiba   +6 more
wiley   +1 more source

Design and Characterization of Valveless Impedance Pumps

open access: yesJournal of Mechanics, 2009
ABSTRACTThis study designs, fabricates and characterizes three valveless impedance pumps, namely a symmetrical pump with a circular cross-section, an asymmetrical pump with a circular cross-section, and an asymmetrical pump with a rectangular cross-section.
C.-Y. Wen, H.-T. Chang
openaire   +1 more source

Untethered Fluidic Engine for High‐Force Soft Wearable Robots

open access: yesAdvanced Intelligent Systems, Volume 6, Issue 11, November 2024.
The research addresses a gap in fluid‐driven soft wearable robots. Existing designs are either tethered to bulky power sources or limited in strength. Herein, a novel fully integrated electrohydraulic system is presented that offers both portability (1.6 kg) and high‐force capability (580 N), which can empower the deployment of soft wearable robots for
Antonio Di Lallo   +5 more
wiley   +1 more source

A 3D‐Printed Printhead: Custom Inkjet Dispenser for Medium Viscosity Fluids

open access: yesAdvanced Engineering Materials, Volume 26, Issue 12, June 2024.
Inkjet is a versatile non‐contact printing technique that uses droplets of ink to print on a variety of substrates. The design, fabrication by 3D‐printing and testing of a low‐cost, multi‐purpose single‐nozzle piezoelectric dispenser/printhead for medium‐viscosity fluids (10–60 cP) is reported – this design can be optimized for many research purposes ...
Rui Miguel Raposo Pinto   +2 more
wiley   +1 more source

Mathematical model of a valveless micropump with a hydraulic diode

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The development of efficient valveless fluid pumping systems requires the creation of specialized models that account for directed flow transmission through hydrodiodes.
E. A. Pavlyuchenko, A. S. Pavlyuchenko
doaj   +1 more source

Modulating Cardiac Hemodynamics Using Tunable Soft Robotic Sleeves in a Porcine Model of HFpEF Physiology for Device Testing Applications

open access: yesAdvanced Functional Materials, Volume 34, Issue 8, February 19, 2024.
This work presents a tunable porcine model of the hemodynamics of heart failure with preserved ejection fraction (HFpEF) using implantable soft robotic left ventricular and aortic sleeves that modulate cardiac compliance and afterload. This research addresses the lack of a disease model for high‐fidelity preclinical evaluation of device‐based solutions
Luca Rosalia   +6 more
wiley   +1 more source

Design and Simulation of a Valveless Micro Pump

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2009
This paper reports on the design and simulation of a valveless micro pump which promises widely applicable in microfluidic applications. The structure of the pump comprises a PZT diaphragm and a fluidic network channel which can be easily fabricated by either conventional machining or silicon micromachining techniques. The working principle of the pump
DAU, Van Thanh   +3 more
openaire   +3 more sources

Electromagnetic effects on membrane–driven Ree–Eyring fluid with slip conditions

open access: yesDiscover Applied Sciences
Significance Valveless membrane contractions-driven pumping has emerged as a promising mechanism for efficient fluid transport in microfluidic and biomedical systems.
M. R. Madhavi   +5 more
doaj   +1 more source

Performance Comparison of Novel Single and Bi-Diaphragm PZT Based Valveless Micropumps

open access: yesJournal of Applied Fluid Mechanics, 2020
A commercial micropump should provide properties that justify the simple structure and miniaturization, high reliability, simple working principle, low cost and no need for complex controller.
H. Asadi Dereshgi   +2 more
doaj  

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