Nonintrusive manipulation by standing-wave acoustics has been widely used for levitation and trapping of macroscopic objects.1 The standing-wave field creates an acoustic radiation force on the object that depends on its size and acoustic parameters.2 In the present article we demonstrate size-selective separation and retention of latex spheres inside a small-diameter flow-through capillary by use of an ultrasonic radiation trap. The work aims at rapid in-flow detection and separation of specific molecules via antibody-coated latex spheres. Aco ....etc

[:=Read Full Message Here=:]

to get information about the topic Robotics of distance mesuring using ultra sonic sensors related topic refer the page link bellow

http://seminarsprojects.net/Thread-ultrasonic-sensor-based-dc-motor-control-using-labview ....etc

[:=Read Full Message Here=:]

F-Function Lobe Balancing for Sonic Boom Minimization
The early sonic boom theory defined the F-function distributions for two-shock (bow and tail) signatures with minimum impulse, minimum overpressure, or minimum bow-shock overpressure. The cross-sectional area distributions for wing-body wind tunnel models were derived using the iterative methods. But these methods have a disadvantage that a two shock ground signature, which being the worst case of the system is optimeised by these methods. the ground-signature parameter is physical ....etc

[:=Read Full Message Here=:]

ULTRA SONIC motor is a newly developed motor, and it has excellent performance and many useful features, e.g.: high-torque density, low speed, compactness in size, no electromagnetic interferences, and so on. USM is a kind of piezo motor. The proposed speed control scheme is assumed for these applications because they require quick and precise speed control of actuators for various load conditions. A speed control method of USM using adaptive control is proposed.
Artificial Neural Network (ANN), which follows the biological neural cells in bra ....etc

[:=Read Full Message Here=:]

PAPER SUBMITTED BY:
B.V.KRISHNAKOWSIC
N.NAVEENKUMAR




ABSTRACT:
Blindness is more feared by the public than any other ailment. Artificial vision for the blind was once the stuff of science fiction. But now, a limited form of artificial vision is a reality .Now we are at the beginning of the end of blindness with this type of technology. In an effort to illuminate the perpetually dark world of the blind, researchers are turning to technology. They are investigating several electron ....etc

[:=Read Full Message Here=:]

distance finder based on at89s52 and ultra sonic sensors hc sr04

Ultrasonic range finder using 8051 .
A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to 2.5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module HC-SR04 forms the basis of this circuit. The ultrasonic module sends a signal to the object, then picks up its echo and outputs a wave form whose time period is proportional to the distance. The ....etc

[:=Read Full Message Here=:]

Hi i need a ppt on ' sonic and ultrasonic instruments ' , it would be very kind if sumone can help me with it ....etc

[:=Read Full Message Here=:]

ULTRA- FAST ULTRA - HIGH INTENSE LASER

ABSTRACT

The year 2008 will probably known as the year of ultra mobile PCs with a slew of Ultra Mobile PCs being released by different companies. Ultra mobile PC promises to support wired or wireless network to which is a major plus as gives a number of options for net connection along with mobility. On the specification side the device sports s 7 inch LCD screen with a resolution is adequate for running applications. The screen is flanked b stereo speaker ....etc

[:=Read Full Message Here=:]

Charge Trapping Effects in High-k Transistors



Note, this is not a real abstract but a template based from the real one. Transition metal and rare-earth oxides comprise many of the high dielectric constant (high-k) materials currently being investigated for application as gate dielectrics in highly scaled transistors. A common electronic feature of these materials is the presence of d-shell states, which leads to their structural properties being drastically different from those of the c ....etc

[:=Read Full Message Here=:]

Detection of corrosion damage in aircraft wing skin structures is an ongoing NDT challenge. Ultrasonic methods are known and well-accepted techniques, which are relatively simple to carry out in terms of setup, probes and instrumentation and operator training. However, with conventional inspection from the top surface using a transducer at normal incidence (0o to the normal to the surface) producing a visual picture in the form of a C-scan, it is very tie consuming to point-by-p ....etc

[:=Read Full Message Here=:]