{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:23:08Z","timestamp":1760242988930,"version":"build-2065373602"},"reference-count":23,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2015,4,14]],"date-time":"2015-04-14T00:00:00Z","timestamp":1428969600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A Love wave humidity sensor is developed by using a multilayer structure consisting of PVA\/SiO2 layers on an ST-90\u00b0X quartz substrate. The theoretical result shows that the sensor with such a two-layer structure can achieve a higher sensitivity and a smaller loss than the structures with a single polymer layer. Comparative experiments are performed for the sensor incorporating PVA\/SiO2 layers and the sensor incorporating a PVA layer. The experimental results agree well with the theoretical predication.<\/jats:p>","DOI":"10.3390\/s150408615","type":"journal-article","created":{"date-parts":[[2015,4,14]],"date-time":"2015-04-14T10:32:00Z","timestamp":1429007520000},"page":"8615-8623","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["The Development of Love Wave-Based Humidity Sensors Incorporating Multiple Layers"],"prefix":"10.3390","volume":"15","author":[{"given":"Lijun","family":"Wang","sequence":"first","affiliation":[{"name":"Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China"}]},{"given":"Jiansheng","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China"}]},{"given":"Shitang","family":"He","sequence":"additional","affiliation":[{"name":"Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China"}]}],"member":"1968","published-online":{"date-parts":[[2015,4,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1166\/sl.2005.001","article-title":"Humidity Sensors: A Review","volume":"3","author":"Lee","year":"2005","journal-title":"Sens. Lett."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2799","DOI":"10.1143\/JJAP.43.2799","article-title":"Surface Acoustic Wave Sensors","volume":"43","author":"Shiokawa","year":"2004","journal-title":"Jap. J. Appl. Phys."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"300","DOI":"10.1016\/S0925-4005(00)00448-2","article-title":"Relative humidity sensing by PVA-coated dual resonator SAW oscillator","volume":"68","author":"Penza","year":"2000","journal-title":"Sens. Actuators B Chem."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"592","DOI":"10.1016\/j.snb.2009.02.009","article-title":"Fast-response surface acoustic wave humidity sensor based on hematoporphyrin film","volume":"137","author":"Rimeikaa","year":"2009","journal-title":"Sens. Actuators B Chem."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1016\/j.snb.2011.12.037","article-title":"A novel surface acoustic wave-impedance humidity sensor based on the composite of polyaniline and poly(vinyl alcohol) with a capability of detecting low humidity","volume":"165","author":"Li","year":"2012","journal-title":"Sens. Actuators B Chem."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"657","DOI":"10.1109\/58.156185","article-title":"A novel Love-plate acoustic sensor utilizing polymer overlayers","volume":"39","author":"Gizeli","year":"1992","journal-title":"IEEE Trans. Ultrason. Ferroelectr. Freq. Control"},{"key":"ref_7","unstructured":"Kovacs, G., Lubking, G.W., Vellekoop, M.J., and Venema, A. (1992, January 20\u201323). Love waves for (bio)chemical sensing in liquids. Proceedings of the IEEE Ultrasonics Symposium, Tucson, AZ, USA."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/S0924-4247(97)01698-1","article-title":"A multilayer structure for Love mode acoustic sensor","volume":"65","author":"Du","year":"1998","journal-title":"Sens. Actuators A Phys."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"716","DOI":"10.1088\/0964-1726\/6\/6\/008","article-title":"Design and properties of quartz based Love wave acoustic sensors incorporating silicon dioxide and PMMA guiding layers","volume":"6","author":"Harding","year":"1997","journal-title":"Smart Mater. Struct."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/S0924-4247(96)01311-8","article-title":"A study of Love wave acoustic sensors","volume":"56","author":"Du","year":"1996","journal-title":"Sens. Actuators A Phys."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1016\/S0924-4247(96)01424-0","article-title":"An experimental study of Love wave acoustic sensors operating in liquids","volume":"60","author":"Du","year":"1997","journal-title":"Sens. Actuators A Phys."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1016\/S0924-4247(97)80275-0","article-title":"Love wave acoustic immune sensor operating in liquid","volume":"61","author":"Harding","year":"1997","journal-title":"Sens. Actuators A Phys."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"9701","DOI":"10.1063\/1.1477603","article-title":"Theoretical mass sensitivity of Love wave and layer guided acoustic plate mode sensors","volume":"91","author":"McHale","year":"2002","journal-title":"J. Appl. Phys."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"675","DOI":"10.1063\/1.1524309","article-title":"Theoretical mass, liquid, and polymer sensitivity of acoustic wave sensors with viscoelastic guiding layers","volume":"93","author":"McHale","year":"2003","journal-title":"J. Appl. Phys."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Liu, J., and He, S. (2010). Theoretical analysis on Love waves in a layered structure with a piezoelectric substrate and multiple elastic layers. J. Appl. Phys., 107.","DOI":"10.1063\/1.3359660"},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Liu, J., Wang, L., Lu, Y., and He, S. (2013). Properties of Love waves in a piezoelectric layered structure with a viscoelastic guiding layer. Smart Mater. Struct.","DOI":"10.1088\/0964-1726\/22\/12\/125034"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Liu, J. (2014). A theoretical study on Love wave sensors in a structure with multiple viscoelastic layers on a piezoelectric substrate. Smart Mater. Struct.","DOI":"10.1088\/0964-1726\/23\/7\/075015"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Liu, J. (2014). A simple and accurate model for Love wave based sensors: Dispersion equation and mass sensitivity. AIP Adv., 4.","DOI":"10.1063\/1.4886773"},{"key":"ref_19","unstructured":"Auld, B.A. (1973). Acoustic Fields and Waves in Solids, John Wiley."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1021\/ja01269a023","article-title":"Adsorption of gases in multimolecular layers","volume":"60","author":"Brunauer","year":"1938","journal-title":"J. Am. Chem. Soc."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"686","DOI":"10.1021\/ja01208a049","article-title":"Modifications of the Brunauer, Emmett and Teller Equation","volume":"68","author":"Anderson","year":"1946","journal-title":"J. Am. Chem. Soc."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"6844","DOI":"10.3390\/s140406844","article-title":"Response Mechanism for Surface Acoustic Wave Gas Sensors Based on Surface-Adsorption","volume":"14","author":"Liu","year":"2014","journal-title":"Sensors"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1016\/j.snb.2014.07.095","article-title":"Dynamics and response of a humidity sensor based on a Love wave device incorporating a polymeric layer","volume":"204","author":"Liu","year":"2014","journal-title":"Sens. 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