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A barcode magnetic nanowire typically comprises a multilayer magnetic structure in a single body with more than one segment type. Interestingly, due to selective functionalization and novel interactions between the layers, it has attracted significant attention, particularly in bioengineering. However, analyzing the magnetic properties at the individual nanowire level remains challenging. Herein,...
Individual Barcode Nanowires
A wide‐field quantum microscope based on diamond nitrogen‐vacancy centers is used to image the magnetic field from individual barcode magnetic nanowires made of multilayer magnetic structures such as Fe–Au and Fe–Co. The detailed analysis of magnetic images allows for the extraction of crucial magnetic properties of barcode magnetic nanowires such as magnetization and...
Ultralow power chemical sensing is essential toward realizing the Internet of Things. However, electrically driven sensors must consume power to generate an electrical readout. Here, a different class of self‐powered chemical sensing platform based on unconventional photovoltaic heterojunctions consisting of a top graphene (Gr) layer in contact with underlying photoactive semiconductors including...
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