After an introduction on IMS Bordeaux Laboratory (Integration : from Material to Systems, www.ims-bordeaux.fr) and on the group WAVES (ONDES), the talk will focus on Surface Acoustic Wave or SAW-based devices for highly sensitive and real-time chemical or biochemical sensing applications. This overview presents a versatile effort made at IMS Bordeaux labs through a large spectrum of applications investigated, among them mainly environmental and health related ones. The devices are fabricated with the collaboration of the national technological network (RTB) at LAAS-CNRS (Toulouse, France), then they are functionalized with various innovative materials developed with national or international partners specialized in chemistry and/or biotechnologies. These materials are based on organic, inorganic, hybrid materials, either natural or engineered, typically with micro- to nano-structuration and surface modification for increased sensitivity and specificity. Their integration into thin-films as well as microfluidics and other embedded features lead to microsensing platforms customized for the targeted compounds and applications. We will also discuss an increasing interest for carbonated materials such as nanotubes or graphene which could lead to unexpected sensitivities, as well as developments with microtransducers based on other resonant phenomena: flexible imprinted radio-frequency devices, polymer optical microring resonators. Together with new topics on the development of wireless solutions for micro-energy, this leads us to perspectives in wireless sensing networks.
Corinne Dejous received an electronics engineer degree from the French "Grande École” ENSEIRB in 1991, and a Ph.D. in 1994 (University of Bordeaux, France). She is now Professor at Bordeaux Institute of Technology, Eng. school ENSEIRB-MATMECA, where she teaches electronic systems and instrumentation, chemical sensors and microsystems. She is responsible for the department on Embedded Electronic Systems since 2013. Since 1991, her main research activities have focused on acoustic waves sensors and more generally on wave-based resonant (bio)chemical microsensors at IMS laboratory (CNRS UMR5218), mostly for health and environment purposes. Since 2011, she is the head of the group “ONDES” (WAVES*). She is also in charge of one among the four interdisciplinary Large Research Projects of IMS, started in 2016. She has co-authored over 60 publications in international journals with peer review or book chapters, 2 patents, more than 150 conference proceedings. She has delivered 25 invited talks and seminars, has been co-responsible for 35 research projects and has co-supervised 16 PhD (4 in progress).