Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 131 for “"piezo"”.
-
Multidoman Piezo-Ceramic Cantilever
PZT-5H is a ferroelectric and piezoelectric material that has many applications that are the subjects of current research. As a ferroelectric, PZT-5H has a permanent electrical polarization that arises from ferroelectric domains. In this thesis, numerical simulations were conducted via the well …
-
Piezo-induced fatigue of solder joints
Piezomechanical loading of an adhesive joint is a very close analogue to the loading imposed by adherends with dissimilar thermal expansion coefficients under a temperature change. Using this concept, a double lap joint test specimen was developed to investigate the damage mechanisms in solder …
-
A piezo-electric internal combustion engine indicator
Typescript, etc.
-
Regulation of PIEZO Channels by Membrane Lipids
… extra- and intracellular tethers. The mammalian PIEZO ion channel family is comprised of two mechanosensitive non-selective cation channels, PIEZO1 and PIEZO2. These ion channels have a fundamental role in multiple normal and pathophysiological mechanisms in mammals. Loss- and gain-of-function …
-
Mechanisms for Inactivation in Piezo Ion Channels
… neurobiological question. In the past decade, Piezo ion channels have emerged as the first vertebrate ion channels identified responsible for transforming somatosensory stimuli into excitatory signals in the nervous system, generating our sense of touch. However, little still is known about the …
-
A piezo-tunable gigahertz cavity microelectromechanical resonator
… close the capacitor gap. Testing was done with a piezoelectric actuator for this task. The match between the modeled and measured impedance is extremely good up to and beyond 5 GHz, with less than a 1% error in magnitude and phase.
-
AeroVolt Shading: Wind-Piezo Kinetic shading facade
… in construction and information technologies. Piezoelectric wind harnessing devices are at the heart of this investigation, powering kinetic shading systems that offer a renewable and eco-friendly alternative to traditional energy sources. However, implementing such systems presents technical …
-
Development of Novel Piezo-Driven Parallel-Kinematics Micropositioning Stages
… and backlash. These stages are driven by piezoelectric actuators which greatly enhance the bandwidth and positioning resolution. Our work addresses challenges in synthesizing, analyzing and manufacturing the novel piezo-driven parallel kinematic micropositioning stages. A meso-scale XY …
-
Dynamic study of the piezo-driven pipettes in intracytoplasmic sperm injection
… using an injection pipette. During ICSI, one piezo-driven actuator (PDA) connected to the pipette is routinely utilized. Importantly, the pipettes driven by PDA are typically filled with the mercury plug. The presence of mercury is associated with serious potential toxicity effects, both …
-
Piezo-optical study of the behaviour of short chain liquid polymers
The molecules of short chain liquid polymers exist in a dynamic mixture of conformations. Intermolecular interactions are important, rendering statistical mechanical models inappropriate: instead, free volume concepts are used. Evidence of an ordered liquid state in the n-alkanes is disputed, and …
-
The use of piezo-ceramics as distributed actuators in flexible space structures
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1985.
-
Low-latency architectures for piezo-driven wearable haptic devices for industry 4.0 applications
… that the major source of delay is coming from piezo haptic driver block. This led to a detailed analysis of piezo haptic driver architectures and to proposing three novel architectures for such drivers. The proposed solutions have been modelled and simulated in MATLAB and MULTISIM and, …
-
Development and Analysis of the Lumped Parameter Model of a Piezo-Hydraulic Actuator
… certain operating conditions. The concept of piezohydraulic actuation takes advantage of the high force capabilities that piezoceramics have and combines it with the operation at high frequencies, in order to achieve the hydraulic actuation of a system under a specified stroke and force. High …
-
Developement of Piezo-Hydraulic Actuation Systems Technology for use on a Helicopter Trailing Edge Flap
… of this study was to create a proof-of-concept piezoelectric actuator system capable of meeting the performance requirements necessary for actuation of a trailing edge flap for a helicopter main rotor blade. Due to extremely small displacements produced by piezoelectric actuators, their output …
-
Some experimental investigation on effect of light and vibration on nano coated piezo for energy harvesting
<p>PZT is a promising piezoelectric ceramic material which has a wide range of applications in a variety of fields such as acoustic sensors and transducers, electrical switches, medical instrumentation, artificial sensitive skin in robotics, automotive detection on roads, nondestructive testing , …
-
Optimum Damping of Beam Vibrations Using Piezoceramic Transducers
In this thesis a piezo-electro-mechanical system, constituted of an aluminum beam with five piezoelectric patches glued on it, each of them shunted with an RL electrical circuit, has been numerically and experimentally investigated, in order to determine the optimal electric tuning parameters for …
-
Nanoscale infrared absorption imaging and tomography
… expansion generated by a mechanical actuator (piezo) placed under the sample. Dividing the raw AFM-IR contrast by this reference signal at each sample position eliminates spatial responsivity variations enabling accurate chemical imaging. Although the ratio approach corrects for spatial …
-
Stabilization of an FM active harmonic mode-locked fiber laser at high repetition rates
… a Proportional-Integral ( PI) controller and a piezo fiber stretcher was also developed and optimized. This approach uses a circuit-controlled piezo (PZT) device to physically counteract optical cavity length variations. The optimized circuit-controlled and computer-controlled approaches were …
Page 1 of 7