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Journals and Conferences
Frost-heaved bedrock features are periglacial forms produced by the vertical displacement of bedrock fragments. Blocks, frost-wedged from bare bedrock along joints, are raised above the general surface by heave. Although mentioned in the literature of the late 19th century, they have been described and studied in detail only recently. They are widespread in… (More)
At St. Ludger, Upper Chaudiere Valley, in southern Qutbec, glacio-lacustrine sands of the Gayhurst formation which are older than 20 000 years B.P., are cut by a vertical till dike, 40 cm in width and more than 200 cm in height. The infilling materials are similar to those of the overlying Lennoxville till. The trend of the dike is at right angles to the… (More)
Most upconverters suffer from low efficiencies and minimal active tunability with external forces or fields. Here, we develop novel upconverting materials that address these limitations, and utilize them for in-vivo biological force and field sensing.