Preface

On behalf of the Committee, I would like to thank you for your participation in The 4 th International Seminar on Sensors, Instrumentation, Measurement and Metrology (ISSIMM 2019) which has been held at Universitas Negeri Padang (UNP) in Padang, West Sumatera, Indonesia, November 14 th , 2019. This 4 th ISSIMM is organized by the Physics Department, Faculty of Mathematic and Natural Science, Universitas Negeri Padang. It is jointly organized by Universitas Indonesia (UI), Universitas Brawijaya (UB), Universitas Gadjah Mada (UGM), Institut Teknologi Bandung (ITB), Institut Teknologi Sepuluh Nopember (ITS), Universitas Airlangga (UNAIR) and Universitas Negeri Padang (UNP). Moreover, Physical Society of Indonesia (PSI), Instrumentation and Metrology (Puslit KIM-LIPI) and ISASS will provide technical supports to this seminar. The ISSIMM conference is a fusion of International Conference on Sensor, Sensor System and Actuator (ICSSSA) and International Seminar on Instrumentation, Measurement and Metrology. Prominent researchers and scientists from around the world will join together in the seminar to share their latest research results and exchange their ideas. In addition, direct contacts among the researchers and scientists will therefore promote international research networking as well as collaboration in the future. The seminar will include plenary speeches, invited presentations, and contributed presentations. I would like to express my sincere appreciation to all the participants, financial sponsors, exhibitors, supporting organizations and all the committee members who has made 4 th ISSIMM successful. With these strong support, we are sure ISSIMM 2019 will be beneficial to all the participants. We are looking forward to meeting you in the next ISSIMM.