Hyper-branch sensing polymer batch self-assembled on resonant micro-cantilevers with a coupling-reaction route

Gas sensors based on mass-sensitive transducers. Part 2: Improving the sensors towards practical application

“…reported ZnO colloid spheres for alcohol detection prepared via self-assembly [ 302 ]. Figure 14 shows the self-assembly of a hyper-branched polymer on a Si micro-cantilever for DMMP detection prepared by Guo et al [ 303 ].

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“…14 Batch self-assembly of a hyper-branched polymer on a Si micro-cantilever. Reproduced with the kind permission of Elsevier B.V. from reference [ 303 ] …”

Investigation of interactions between organophosphorus compounds and TiO2 modified microcantilevers for molecule detection in air

“…The selection of appropriate sensitive layer is usually based on the target analytes and the possible interactions with the sensor surface. This layer is generally made of nanoporous materials, nanostructures 13 , self-assembled monolayer 14 , specific functional molecules or hyper-branched polymers 15 , etc. All the cited examples were very promising and showed good responses regarding the detection of volatiles organics compounds, moisture or organophosphorous molecules but so far the proposed devices doesn't fully satisfy all required criteria in terms of sensitivity, selectivity, rapidity and cost.…”

Double side nanostructuring of microcantilever sensors with TiO2-NTs as a route to enhance their sensitivity

“…Microgravimetric sensors and more particularly microcantilevers are a good candidate and showed promising results due to their low cost, their ease of handle, their reversibility and their good sensitivity. [10][11][12][13][14][15][16] To date, different strategies have been explored to improve their effectiveness about the detection of OPs. The first strategy consists mostly in functionalizing the microcantilever surface.…”

“…The first strategy consists mostly in functionalizing the microcantilever surface. For example, a selfassembled composite layer of Cu 2+ /11-mercaptoundecanoic acid, 10 a hyper-branched polymer, 12,14 or 78-mer 5'-biotinylated aptamer have been fixed on the microcantilever surface. 13 However, the organic molecules are not stable at high temperatures and over long periods of time.…”