Applied Physics Express or APEX is a scientific journal publishing letters, with usually no more than three pages per (concise) article.

The main purpose is to rapidly publish original, timely, and novel research papers in applied physics.

As part of its aim, the journal intends for papers to be novel research that has a strong impact on relevant fields and society.

It is notable that the journal considers satisfaction of this criterion as showing the paper merits priority handling in the review and publication processes.

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