Paddle

About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.

Wave generator for waterbeds

Abstract: A wave generator for waterbeds comprises a paddle unit adapted for positioning on the horizontal mattress supporting surface of the bed frame between an edge of the mattress and a side panel of the frame and has a paddle extending to overlie the upfacing surface of the mattress. A pivoted arm supports the paddle and is reciprocated by an electric motor through pitman-like linkages to oscillate from a raised horizontal position to a downwardly inclined position whereby the paddle rhythmically depresses and releases the mattress creating waves in the surface thereof radiating from the paddle. A control box having an on/off switch, a speed control for the motor and a timer for the switch is interposed along wiring from the motor. The length of wiring between the motor and control box being sufficient to locate the control box for easy access by a user reclining on the mattress when the paddle unit is in operative position.

An alternative way to stir the fields in a mode stirred chamber

Abstract: The stirring of modes in a mode stirred chamber is accomplished with the help of large cumbersome metallic paddle wheels. This method is only effective at frequencies high enough where there is a large number of propagating modes in the chamber. Besides, this is a mechanical method that can result in an increased time period for making measurements. If the paddle wheel is stepped it is necessary for the vibrations of the large paddles to die down before a reading can be taken. In this paper a different method is proposed using a set of wires placed along the lengths of the cavity. Since these wires support a transverse electromagnetic (TEM) wave they are capable of exciting and stirring the fields with no low frequency limitation. The field stirring can be achieved electronically by changing the phase and/or amplitudes among the excitation wires.

Design and development of a novel paddle test structure for the mechanical behavior measurement of thin films application for MEMS

Abstract: A new technique was developed for studying the mechanical behavior of thin films on substrate applications for micro-electro-mechanical system (MEMS). The test structure was designed on novel “paddle” cantilever beam coated thin film specimens with dimensions of a few hundred to 50 nm. This beam has a triangle shape that provides a uniform plane strain distribution. Standard clean room processing was used to prepare the paddle sample. The experiment can be operated using the electrostatic force to deflect the “paddle” cantilever beam and measure the mechanical response of the sample with surface deposited thin film. A capacitance measurement is used to observe the deflection of the cantilever plate on the other side of the sample with respect to the electrostatic force on the one side. The measured strain was then converted through this capacitance measurement to conduct mechanical behavior studies on the coated thin film. Both system performance experiments and calculations were studied to verify the design concepts. The residual thin film stress measurements were performed and compared with the calculated results from three different forces exerted on the “paddle” cantilever beam, including the force due to the film, compliance force, and electrostatic force.