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Sponsored by Park SystemsApr 29 2021 It is possible to generate long-range wavelength ordering known as Moiré superlattice periodicity by stacking two-dimensional (2D) materials within each other’s van der Waals interaction distance. When this process is applied to graphene on hexagonal boron nitride (hBN), this effect would appear on the uppermost layer of graphene, causing graphene’s energy bandgap to open. 1,2,3 Regulating lattice orientation between graphene and boron nitride can facilitate variation in the Moiré periodicity s wavelength, effectively tuning the graphene energy bandgap. The energy bandgap range will, in turn, affect graphene’s performance and device functionalities. 4 Researchers will therefore benefit from a simple means of deciphering Moiré shape and periodicity, particularly when designing 2D graphene/BN-like heterostructured devices and materials. ....
Utilizing Park System s SECCM for Nanoscale Electrochemical Studies In energy storage and electrocatalysis, correlating electrochemical activity with nanostructured electrochemical interfaces (electrodes) 1 is considered the holy grail. It is difficult to analyze the local structure-activity relationship for these interfaces, or to measure the heterogeneity of electrode structures when employing traditional macroscopic electrochemical techniques. This is because macroscopic electrochemical investigations can only quantify the total electron transfer on a full sample. A novel strategy for the characterization of nanoscale electrochemical activity is required to solve this challenge. Scanning electrochemical cell microscopy (SECCM) is a novel pipette-based nanoelectrochemical scanning probe technique devised to study the local electrochemical features of electrode surfaces ....