Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions

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Water in plant xylem is often superheated, and therefore in a meta-stable state. Under certain conditions, it may suddenly turn from the liquid to the vapor state. This cavitation process produces acoustic emissions. We report the measurement of ultrasonic acoustic emissions (UAE) produced by natura...

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Autores principales:	Fernández, E., Fernández, Roberto J., Bilmes, Gabriel Mario
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2012
Materias:	Física Cavitation in plants Laser induced Ultrasonic Acoustic Emissions Xylem Cavitation Zea mays Corn Stem Embolism
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/178349
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-178349
record_format	dspace
spelling	I19-R120-10915-1783492025-04-22T20:28:29Z http://sedici.unlp.edu.ar/handle/10915/178349 Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions Fernández, E. Fernández, Roberto J. Bilmes, Gabriel Mario 2012-05-10 2025-04-22T18:47:38Z en Física Cavitation in plants Laser induced Ultrasonic Acoustic Emissions Xylem Cavitation Zea mays Corn Stem Embolism Water in plant xylem is often superheated, and therefore in a meta-stable state. Under certain conditions, it may suddenly turn from the liquid to the vapor state. This cavitation process produces acoustic emissions. We report the measurement of ultrasonic acoustic emissions (UAE) produced by natural and induced cavitation in corn stems. We induced cavitation and UAE in vivo, in well controlled and reproducible experiments, by irradiating the bare stem of the plants with a continuous-wave laser beam. By tracing the source of UAE, we were able to detect absorption and frequency filtering of the UAE propagating through the stem. This technique allows the unique possibility of studying localized embolism of plant conduits, and thus to test hypotheses on the hydraulic architecture of plants. Based on our results, we postulate that the source of UAE is a transient "cavity oscillation"' triggered by the disruptive effect of cavitation inception. Laboratorio de Ablación Láser, Fotónica e Imágenes 3D Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Cavitation in plants Laser induced Ultrasonic Acoustic Emissions Xylem Cavitation Zea mays Corn Stem Embolism
spellingShingle	Física Cavitation in plants Laser induced Ultrasonic Acoustic Emissions Xylem Cavitation Zea mays Corn Stem Embolism Fernández, E. Fernández, Roberto J. Bilmes, Gabriel Mario Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions
topic_facet	Física Cavitation in plants Laser induced Ultrasonic Acoustic Emissions Xylem Cavitation Zea mays Corn Stem Embolism
description	Water in plant xylem is often superheated, and therefore in a meta-stable state. Under certain conditions, it may suddenly turn from the liquid to the vapor state. This cavitation process produces acoustic emissions. We report the measurement of ultrasonic acoustic emissions (UAE) produced by natural and induced cavitation in corn stems. We induced cavitation and UAE in vivo, in well controlled and reproducible experiments, by irradiating the bare stem of the plants with a continuous-wave laser beam. By tracing the source of UAE, we were able to detect absorption and frequency filtering of the UAE propagating through the stem. This technique allows the unique possibility of studying localized embolism of plant conduits, and thus to test hypotheses on the hydraulic architecture of plants. Based on our results, we postulate that the source of UAE is a transient "cavity oscillation"' triggered by the disruptive effect of cavitation inception.
format	Articulo Articulo
author	Fernández, E. Fernández, Roberto J. Bilmes, Gabriel Mario
author_facet	Fernández, E. Fernández, Roberto J. Bilmes, Gabriel Mario
author_sort	Fernández, E.
title	Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions
title_short	Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions
title_full	Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions
title_fullStr	Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions
title_full_unstemmed	Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions
title_sort	natural and laser-induced cavitation in corn stems: on the mechanisms of acoustic emissions
publishDate	2012
url	http://sedici.unlp.edu.ar/handle/10915/178349
work_keys_str_mv	AT fernandeze naturalandlaserinducedcavitationincornstemsonthemechanismsofacousticemissions AT fernandezrobertoj naturalandlaserinducedcavitationincornstemsonthemechanismsofacousticemissions AT bilmesgabrielmario naturalandlaserinducedcavitationincornstemsonthemechanismsofacousticemissions
_version_	1855354183540015104

Natural and laser-induced cavitation in corn stems: On the mechanisms of acoustic emissions

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