Nonuniform Heating Method for Hot Embossing of Polymers with Multiscale Microstructures.The hot embossing of polymers is one of the most popular methods for replicating high-precision structures on thermoplastic polymer substrates at the micro-/nanoscale.  However, the fabrication of hybrid multiscale microstructures by using the traditional isothermal hot embossing process is challenging.  In this method, a thin graphene-based heater with a nonuniform heating function, a facility that integrates the graphene-based heater and gas-assisted hot embossing, and a roll of thermoplastic film are employed. 
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