Experiments of Micro Jet Injection for Bio-Medical Application

Development of a Piezo-Driven Liquid Jet Dispenser with Hinge-Lever Amplification Mechanism

“…One of the reasons behind the reduction in amplified displacement can be misalignment of the needle or piezostack. However, the tappet displacement of more than 420 μm is well suited for multiple dispensing applications [20,21,49]. The feed from the laser sensor represents the needle displacement of jet dispenser as shown in Figure 8.…”

“…The piezoelectric actuators have numerous applications in the areas of needle-free drug delivery, vibration suppression, active shape control, energy harvesting, inkjet printing, and fuel injectors [17][18][19][20][21][22]. However, piezo actuators have one major drawback that is their small output displacements but because of their compact structure and easy usability, their demand and applications are increasing [23].…”

“…One of the most commonly adopted displacement amplification structure is a rhombus-type compliant mechanism [31,32]. Its most of the aspects including enhanced mathematical modelling to simplified structure models and various application case studies with detailed experiments have been discussed since the past fifteen years [4,7,11,18,21,30,[33][34][35][36]. The second famous displacement amplification in literature is a bi-piezoelectrically driven lever-type displacement amplification mechanism that is more recent and has been the focus of attention until now [8,9,12,37].…”