Techniques are disclosed for sub-second annealing a lithographic feature to, for example, tailor or otherwise selectively alter its profile in one, two, or three dimensions. Alternatively, or in addition to, the techniques can be used, for example, to smooth or otherwise reduce photoresist line width/edge roughness and/or to reduce defect density. In some cases, the sub-second annealing process has a time-temperature profile that can effectively change the magnitude of resist shrinkage in one or more dimensions or otherwise modify the resist in a desired way (e.g., smooth the resist). The techniques may be implemented, for example, with any type of photoresist (e.g., organic, inorganic, hybrid, molecular photoresist materials) and can be used in forming, for instance, processor microarchitectures, memory circuitry, logic arrays, and numerous other digital/analog/hybrid integrated semiconductor devices.