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Packaging of Polyvinylidene fluoride nasal sensor for biomedical applications

TitlePackaging of Polyvinylidene fluoride nasal sensor for biomedical applications
Publication TypeConference Paper
Year of Publication2013
AuthorsManjunatha, GR, Rajanna, K, Nayak, MM
Conference Name2013 8th International Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT)
Date PublishedOct
KeywordsAssembly, biomedical application, biomedical equipment, biomedical measurement, Biomedical monitoring, compact PVDF nasal sensor, Copper, cost approximation, Films, headphone design, headphones, Monitoring, nostril nasal airflow, packaging, packaging time, piezoelectric devices, pneumodynamics, polymer films, polyvinylidene fluoride nasal sensor packaging, portable instruments, portable PVDF nasal sensor, PVDF film adhesion, PVDF film piezoelectric property, PVDF nasal sensor mounting, PVDF nasal sensor packaging design, sensor cantilever configuration, size 10 mm, size 28 mum, size 30 mum, size 5 mm, size 8 mm, voltage signal generation

This paper presents the design technique that has been adopted for packaging of Polyvinylidene fluoride (PVDF) nasal sensor for biomedical applications. The PVDF film with the dimension of length 10mm, width 5mm and thickness 28μm was firmly adhered on one end of plastic base (8mm×5mm×30μm) in such a way that it forms a cantilever configuration leaving the other end free for deflection. Now with the leads attached on the surface of the PVDF film, the cantilever configuration becomes the PVDF nasal sensor. For mounting a PVDF nasal sensor, a special headphone was designed, that can fit most of the human head sizes. Two flexible strings are soldered on either side of the headphone. Two identical PVDF nasal sensors were then connected to either side of flexible string of the headphone in such a way that they are placed below the right and left nostrils respectively without disturbing the normal breathing. When a subject wares headphone along with PVDF nasal sensors, two voltage signals due to the piezoelectric property of the PVDF film were generated corresponding to his/her nasal airflow from right and left nostril. The entire design was made compact, so that PVDF nasal sensors along with headphone can be made portable. No special equipment or machines are needed for mounting the PVDF nasal sensors. The time required for packaging of PVDF nasal sensors was less and the approximate cost of the entire assembly (PVDF nasal sensors + headphone) was very nominal.