***Publication:After a careful reviewing process, accepted papers with proper registration and presentation, will be published into Journal of Physics: Conference Series (JPCS) [Online ISSN: 1742-6596 / Print ISSN: 1742-6588], which is indexed by Ei Compendex, Scopus, Conference Proceedings Citation Index—Science (CPCI-S) (Thomson Reuters, Web of Science) etc. ~ICCCP 2021 Keynote Speakers:Prof. Yujiro Hayashi, Tohoku University, JapanProf. Hiroyuki Nakamura, Tokyo Institute of Technology, JapanProf. King- Chuen Lin, National Taiwan University, Taiwan~ICCCP 2020 speakers: Prof. Ho Chee Cheong, Universiti Tunku Abdul Rahman, MalaysiaProf. Paisan Kittisupakorn, Chulalongkorn University, Thailand ***Conference Committees:~ Conference Chair: Prof. Umemura Kazuo, Tokyo University of Science, Japan~ Conference Co-Chair: Prof. Hiroyuki Nakamura, Tokyo Institute of Technology, Japan~ Steering Chairs: Prof. Paisan Kittisupakorn, Chulalongkorn University, Thailand; Prof. Ho Chee Cheong, Universiti Tunku Abdul Rahman, Malaysia.