Recent advances in additive manufacturing, specifically direct ink writing (DIW) and ink-jetting, have enabled the production of elastomeric silicone parts with deterministic control over the structure, shape, and mechanical properties. These new technologies offer rapid prototyping advantages and find applications in various fields, including biomedical devices, prosthetics, metamaterials, and soft robotics. Stereolithography (SLA) is a complementary approach with the ability to print with finer features and potentially higher throughput. However, all high-performance silicone elastomers are composites of polysiloxane networks reinforced with particulate filler, and consequently, silicone resins tend to have high viscosities (gel- or paste-like), which complicates or completely inhibits the layer-by-layer recoating process central to most SLA technologies. Herein, the design and build of a digital light projection SLA printer suitable for handling high-viscosity resins is demonstrated. Further, a series of UV-curable silicone resins with thiol-ene crosslinking and reinforced by a combination of fumed silica and MQ resins are also described. The resulting silicone elastomers are shown to have tunable mechanical properties, with 100–350% elongation and ultimate tensile strength from 1 to 2.5 MPa. Three-dimensional printed features of 0.4 mm were achieved, and complexity is demonstrated by octet-truss lattices that display negative stiffness.

Single switch capable of blocking 10 kV and higher voltages are presently being developed and demand improved gate drivers for their functioning. Induction based gate drivers have been the foremost solutions in this regard. Design challenges that have been outlined for these drivers are low coupling capacitance, strong magnetic coupling and smaller dimensions with isolation not considered in depth. In this paper, first isolation requirements and its physical realization guidelines are provided from IEC 61800-5-1 for electric drives application. Based on study, two system insulation designs: single and double PCB are derived for lower MV and higher MV system respectively. Current loop gate driver with double PCB design is found to be practical and economical solution for higher MV power electronics systems. Afterwards, shortcomings of three state of art induction solutions at both system and magnetic link level is discussed. Improved transformers with primary MV cable providing mandatory solid insulation are fabricated. It is shown through impedance measurements that the cable has negative effect on the magnetizing inductance and coupling capacitance compared to state of art transformer solution. At the end, both set of transformers are tested with 64 kV impulse and 32 kV overvoltage with only improved transformers showing positive results.