1. Escuela de Ciencia e Ingeniería de los Materiales; Instituto Tecnológico de Costa Rica; Cartago 159-7050 Costa Rica
2. Department of Materials Science and Engineering; Faculty of Engineering; Kyushu University; Fukuoka 819-0395 Japan
3. Department of Materials Science and Engineering; Faculty of Engineering, WPI; International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; Fukuoka 819-0395 Japan