Results 231 to 240 of about 2,766 (276)

Intensifying the microencapsulation process: Ultrasonic atomization as an innovative approach [PDF]

European Journal of Pharmaceutics and Biopharmaceutics, 2012
In this review, new approaches to the microencapsulation processes, widely used in the manufacturing of pharmaceutical products, are discussed focusing the attention on the emerging ultrasonic atomization technique.
Annalisa Dalmoro, Anna Angela Barba, Gaetano Lamberti   +2 more
exaly   +2 more sources

Intensification of biopolymeric microparticles production by ultrasonic assisted atomization [PDF]

Chemical Engineering and Processing: Process Intensification, 2009
In this work ultrasonic atomization process is applied to produce biopolymer microparticles with potential applications in pharmaceutical and nutraceutical fields.
Anna Angela Barba, Matteo D’Amore, Sara Cascone   +2 more
exaly   +2 more sources

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Ultrasonic atomization of distilled water

The Journal of the Acoustical Society of America, 2018
Experimental data on ultrasonic atomization of distilled water in a frequency range from 5 to 50 kHz are presented. A good agreement was found with the predictions of Rajan and Pandit [Ultrasonics 39, 235–255 (2001)] for the atomized primary drop size as a function of frequency.
L, Gaete-Garretón, D, Briceño-Gutiérrez, Y, Vargas-Hernández, C I, Zanelli   +3 more
openaire   +2 more sources

Ultrasonic atomizers of nanomaterials

2011 International Conference and Seminar on Micro/Nanotechnologies and Electron Devices Proceedings, 2011
The article is devoted to design of promising means of nanomaterial atomization. The construction of developed ultrasonic atomizers is described and the methods of their application are recommended.
Vladimir N. Khmelev, Andrey V. Shalunov, Maxim V. Khmelev, Anna V. Shalunova, Dmitry V. Genne   +4 more
openaire   +1 more source

Ultrasonic Atomization Studies

The Journal of the Acoustical Society of America, 1966
Atomization of selected fluids has been observed to occur in a capillary at various resonance heights of the standing ultrasonic wave in the fluid. The length of fogging has been observed to be a function of the voltage applied to the transducer producing the ultrasonic wave in the fluid.
H. Scott Fogler, Klaus D. Timmerhaus
openaire   +1 more source

Industrial and medical uses of ultrasonic atomizers

Ultrasonics, 1972
Abstract The methods and uses of this form of atomization are surveyed. The applications range from ordinary liquids to molten metals, from throughputs of fractional gallons per hour to more than 100 Imperial gallons per hour (100 gal h −1 ) or 140 grammes per second (140 g s −1 ), and the resulting drop sizes vary from just above 1 μm to 180 μm, all
M N, Topp, P, Eisenklam
openaire   +2 more sources

Experimental Investigation on Atomization Characteristics of Ultrasonic Atomizer

SAE Technical Paper Series, 1990
<div class="htmlview paragraph">An exeperimental study on the atomization characteristics of an ultrasonic Atomizer utilizing pulse laser holographic system is presented in this paper.</div> <div class="htmlview paragraph">The spatial distribution of the ultrasonic frequency and the pressure amplitude behind the atomizer were measured.
Zhou Sudong, Wang Jiahua
openaire   +1 more source

Ultrasonic Atomization of Liquids

The Journal of the Acoustical Society of America, 1963
A theory of ultrasonic atomization of liquid films is presented. It is assumed that exponential growth of surface disturbances ultimately results in the formation of liquid drops, the diameters of which are proportional to the wavelength of the most rapidly growing initial disturbance.
Richard L. Peskin, Roland J. Raco
openaire   +1 more source

Micromachined silicon ultrasonic atomizer

1996 IEEE Ultrasonics Symposium. Proceedings, 2002
High amplitude ultrasound, generated by a micromachined silicon resonant transducer, was used to atomize and pump liquids. The needle-shaped device made by bonding two silicon horns, is driven by lead-zirconate-titanate (PZT) piezoelectric plates. Water was atomized continuously at feed rates of 2.4 ml/min into a mist with mean drop size of 25 /spl mu ...
A. Lal, R.M. White
openaire   +1 more source

A pinhole-plate ultrasonic atomizer

Ultrasonics, 1984
Abstract A new pinhole-plate ultrasonic atomizer has been proposed and developed. A pinhole-plate having one or more pinholes is joined to a cavity filled with liquid and is vibrated by a circular ring piezoelectric element bonded onto it. The vibrating plate generates ultrasonic waves only in the vicinity of the pinholes to jet and atomize the ...
N. Maehara, S. Nakane, K. Yamamoto, K. Iga   +3 more
openaire   +1 more source