A new experimental approach to investigate the induced force and velocity elds on a particulate manipulation mechanism

Identication and minimization of error sources are important issues inexperimental investigations. mainly in micro-scale problems, precise settings should beapplied to high-tech test beds to reduce disturbance and induced motion. an experimentalstudy is conducted to assess the role of induced forces and velocity elds in a particulatesystem used for particle identication and separation. two main eects caused bydisturbances are sampling errors and induced motion in the channel, either on uid ordispersed phases. dierent disturbance scenarios are implemented on the test bed and thenthe system response is reported. in order to assess induced motion as a result of appliedforces, microscopic imaging of particle movement in the channel and image processing ofthe results, are performed. results of particle sampling indicate that optimized pneumaticsettings should be implemented to secure a safe level of sampling error. results for inducedow show that the velocity eld can aect the operation of the manipulation mechanism.methods for capturing the induced force and velocity elds can be implemented in therelevant applications, such as micro-particle systems and cellular studies.