This paper put forward the design and modeling pertaining to a wireless pressure sensor that can monitor blood within coronary artery with help of capacitive sensor. To adjust resonance frequency (26.78–27.09 MHz) regards this sensor’s applied (0–30 KPa), dimension as well human (0–220 mmHg), variable capacitor in has been forward. The shape was designed look like an Ellipse circle, which were ...

The design guidelines for micro diaphragm-type pressure sensors have been established by characterization of the relationships among diaphragm thickness, side length, sensitivity, and resonant frequency. According to the study, the thickness need to be thin and the side length need to be small in order to get the sensitive diaphragm with high resonant frequency. A Fabry–Perot based pressure sen...

Sensitivity of piezoelectric-diaphragm type ultrasonic microsensors were investigated with sol-gel derived lead-zirconate-titanate (PZT) films prepared through various pyrolysis temperatures. The residual stress of the PZT film should be precisely controlled because the sensor diaphragms show static deflection by buckling and highly sensitive sensors have been realized on upward-buckled diaphra...

As part of the Post-Katrina project, a multi-fluidic speed-modulating (MFSM) micropump module combined with Tesla valves and hydrodynamic focusing micro-fluidic channels was designed, fabricated, and tested to help regulating sample flow across the nanowire-seeded sensor areas embedded in microfluidic channels. The size of the entire module is 33 mm x 25 mm x 8mm and comprises of three MFSM mic...

Experimental measurement results of a 1.75 mm × 1.75 mm footprint area Capacitive Micromachined Ultrasonic Transducer (CMUT) planar array fabricated using a bisbenzocyclobutene (BCB)-based adhesive wafer bonding technique has been presented. The array consists of 40 × 40 square diaphragm CMUT cells with a cavity thickness of 900 nm and supported by 10 µm wide dielectric spacers patterned on a t...

The aim of this paper is to propose a complete normalized study of a diaphragm's behavior under classical excitation encountered in microsystem: pneumatic, electrostatic, piezoelectric and magnetic. The principle of modeling is widely described in order to be easily applied to other structure. First, a traditional analytical solution is recalled for the diaphragm's deflection based on energy mi...

This paper discusses the past design practices of flexible diaphragms, the current trend to very large diaphragms, and the new tools available to properly evaluate and engineer these large roof systems. Higher shear demands are accommodated by higher plywood/OSB and steel deck shear capacities accepted by the IBC. A new collective chord technique is presented to more accurately reflect large di...

Distortion-induced fatigue cracking in unstiffened web gaps is common in steel bridges. Previous research by the Minnesota Department of Transportation (Mn/DOT) developed methods to predict the peak web gap stress and maximum differential deflection based upon field data and finite element analyses from two skew supported steel bridges with staggered bent-plate and cross-brace diaphragms, respe...