Title :
Study of Love-mode immunosensors based on ZnO/36°YX-LiTaO3 structures
Author :
Zhou, Feng-mei ; Li, Zhe ; Fan, Li ; Gong, Xun ; Zhang, Shu-yi
Author_Institution :
Inst. of Acoust., Nanjing Univ., Nanjing
Abstract :
Love-mode immunosensors based on ZnO/36degYX-LiTaO3 structures are studied. The ZnO films are grown on the 36degYX-LiTaO3 substrates by RF magnetron sputtering technique. The crystalline structures of the ZnO films are investigated by the X-ray diffraction (XRD) analysis, which show that the highly orientated (002) films are obtained. Then the Love-mode sensors are fabricated for monitoring antibody-antigen immunoreactions in aqueous solutions in real time. The results show that the Love-wave sensors based on ZnO/36degYX-LiTaO3 structures have higher mass sensitivity than those with the similar structures, such as SiO2/36degYX-LiTaO3 structure sensors.
Keywords :
II-VI semiconductors; Love waves; X-ray diffraction; biochemistry; biosensors; chemical sensors; crystal structure; dielectric materials; lithium compounds; molecular biophysics; proteins; semiconductor thin films; sputtered coatings; wide band gap semiconductors; zinc compounds; 36degYX-LiTaO3 substrate; Love-mode immunosensor; Love-wave sensor; X-ray diffraction; XRD analysis; ZnO-LiTaO3; antibody-antigen immunoreaction; aqueous solution; crystalline structure; highly orientated (002) film; mass sensitivity; protein A; rf magnetron sputtering; zinc oxide thin film; Acoustic devices; Dielectric constant; Dielectric materials; Dielectric substrates; Magnetic sensors; Monitoring; Polymers; Radio frequency; Sputtering; Zinc oxide; Love wave; Zinc oxide film; immunosensors;
Conference_Titel :
Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-2891-5
DOI :
10.1109/SPAWDA.2008.4775789
