MDPIMDPI is a Basel, Switzerland-based publisher of open-access, openly licensed journals covering molecular science, sensors and biosensors, marine pharmacology, energy, environmental research, viruses, remote sensing technology, toxins, and nutrition. MDPI, which began in 1996, offers more than 200 peer-review open access journals, representing the works of more than 263,000 authors. All MDPI journal content is available under a CC-BY 4.0 license.