<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">quartz crystal microbalances</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31450382</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 21:01:17</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">QCM</dcterms:alternative> <dcterms:alternative xml:lang="en">microbalances, quartz crystal</dcterms:alternative> <dcterms:alternative xml:lang="en">piezoelectic quartz crystal microbalances</dcterms:alternative> <dcterms:alternative xml:lang="en">quartz crystal microbalance</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ A quartz crystal microbalance is an extremely sensitive sensor which weighs mass per area by measuring change in the freqency of an acoustic resonator. It is composed of a specially cut quartz crystal set between two electrodes that oscillates at its resonance frequency when AC power is applied through the electrodes due to the piezoelectric effect. ]]></dc:description></metadata>