Socpra Sciences Et Genie S.e.c.

Richard Ares

Paul G Charette

Abderraouf Boucherif

Guillaume Beaudin

Etienne Grondin

Vincent Aimez

Arthur Dupuy

An anode for batteries having a columnar nanostructured porous germanium for its active material. This nanostructured porous germanium can be produced with the novel etching method disclosed herein. Such anode can be easily mass-produced with the presented method that requires pre-existing, affordable and easy to integrate equipment. In some embodiments, the produced columnar porous germanium can be directly used as a monolithic anode after its etching nanostructuration for on-chip anodes for example, where the anisotropic nanostructured germanium acts as the active material and where the remaining bulk germanium layer act as the current collector. This can be easily implemented in lithium batteries. The cycle life of such anodes could be extended by a factor of 26 and 1.8 for high rate and high energy applications, respectively.

Anisotropic porous germanium nanostructures achieved with fast bipolar electrochemical etching and chemical etching

An optocoupler, an optical interconnect and method of manufacture providing same are provided for coupling an optical signal between a high refractive index waveguide of an integrated circuit and a waveguide external to the integrated circuit. The optocoupler includes a thinned high refractive index waveguide having a thickness configured to exhibit an effective refractive index substantially matching a refractive index of the external waveguide.

Low loss directional coupling between highly dissimilar optical waveguides for high refractive index integrated photonic circuits

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Sherbrooke, Canada

Richard Ares