Abstract Nonradiating sources of energy realized under a wave scattering on high-index dielectric nanoparticles have attracted lot attention in nano-optics and nanophotonics. They do not emit to the far-field, but simultaneously provides strong near-field confinement. Near-field wireless power transfer technologies suffer from low efficiency short operation distance. The key factor improve is r...

Wireless power transfer from one transmitter to multiple receivers through inductive coupling is slowly entering the market. However, for certain applications, capacitive wireless power transfer (CWPT) using electric coupling might be preferable. In this work, we determine closed-form expressions for a CWPT system with one transmitter and two receivers. We determine the optimal solution for two...

Bio-implantable devices have been used to perform therapeutic functions such as drug delivery or diagnostic monitoring of physiological parameters. Proper operation of these devices depends on the continuous reliable supply of power. A battery, which is the conventional method to supply energy, is problematic in many of these devices as it limits the lifetime of the implant or dominates the siz...

We present a batteryless, 27uW barely subcutaneous sensing platform using optical power and data links. We demonstrate an 8.1 mm x 3.2 mm implantable tag powered by an 850nm infrared source through the skin barrier. Measurements using pig skin indicate that optical power transfer through skin achieves a 4.9% efficiency, which is higher than mm scale inductive power links. As a proof-of-concept ...

In this paper, power transfer capacity is investigated for systems with a unified power flow controller (UPFC). The combined effects of equipment constraints? system topology and installation locations on the UPFC real power transfer are studied. The P-Q characteristics of UPFC operation under different sets of constraints are determined. The admissible operational ranges of UPFC control output...