The Royal Institution for the Advancement of Learning / Mcgill University

Marta Cerruti

Thomas Szkopek

Hesameddin Mahjoubi

Anthony Ubah

There is described a method of recovering parts of an electronic circuit having a self-supporting substrate having graphene oxide (GO) paper, and at least a conductive trace on the self-supporting substrate. The method generally has a step of immersing the electronic circuit into an environment-friendly solvent, the GO paper thereby dissociating from the conductive trace; and a step of recovering the GO paper from the environment-friendly solvent. The present disclosure also describes an electronic circuit generally having a self-supporting substrate having GO paper with a structural thickness being equal or above a given thickness threshold; and at least a conductive trace on said self-supporting substrate. Further, there is also described a substrate for an electronic circuit in which the substrate generally has a self-supporting substrate having GO paper with a structural thickness being equal or above a given thickness threshold.

Electronic circuit having graphene oxide paper substrate and method of recovering parts of an electronic circuit

Many different substrates are used in tissue engineering as platforms to enhance cell attachment, proliferation and activity, either in-vitro, to multiply specific cell lines, or in-vivo, to induce shorter healing time of injured or missing tissue. However, their hydrophobicity and lack of specific functionalities make them non-ideal for cell adhesion and growth. Treating the surfaces by exposing them to a series of steps including, but not limited to, a diazonium based wet chemistry allows one or more functional groups to be applied to the surface improving cell adhesion and growth. Embodiments of the invention exploiting PDLLA, PMMA and roughed PEEK are demonstrated including both a one-stage and a two-stage process, and at times a vacuum treatment, allowing modification of inner and outer surfaces.

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Montreal, Canada

Marta Cerruti