Seminar Rebon 09 Juni 2021 oleh Dr. rer-nat. M. Farchani Rosyid, M.Si. dari KBK Fisika Teoritik dan Komputasi, Departemen Fisika UGM
Pos oleh :
dep_fisika
Seminar Rebon 02 Juni 2021 oleh Ir. Rahmat Hidayat, S.T., M.Sc.IT dari Politeknik Negeri Padang
Fika Fauzi, Aditya Rianjanu, Iman Santoso, Kuwat Triyana
https://doi.org/10.1016/j.sna.2021.112837
Journal : Sensors and Actuators A: Physical
Volume 330, 15 October 2021, 112837
Abstract
Graphene and graphene-based materials have shown great potential for detecting gases and humidity due to their high specific surface areas. Quartz crystal microbalance (QCM) sensors have been massively developed because they have high sensitivity, consume low energy, and can be readily modified. Recently, QCM coated by graphene composites has been explored to sensitively and selectively detect various gases and humidity. Herein, we summarize the recent progress on QCM gas sensors and QCM humidity sensors based on graphene materials and graphene composites. We start from an introduction to the sensing principle of QCM, synthesis and preparation of graphene materials used for QCM sensing material, application of graphene materials and graphene composites for sensing materials of QCM gas sensors and humidity sensors, and the mechanism of those sensors. We mainly summarize the recent advances in the performances of QCM gas sensor and QCM humidity sensor coated with pristine graphene, graphene oxide, reduced graphene oxide, and various graphene-based composite materials, including chemical, polymer, metal oxide, and other carbon-based materials. The challenges for future works related to the development of QCM sensors coated by graphene materials or graphene composites are also elaborated.
Di saat pandemi ini,
Jemari tak sempat berjabat,
Wajah tak bisa bertatap,
Untuk lisan yang tak terjaga,
Jika ada sikap yang membakar lara,
Jika ada janji yang tak tertunaikan,
dan untuk hati yang yang berprasangka,
Semoga pintu maaf masih terbuka.
Halo! Kamu! Iya, kamu yang masih kuliah S1!
PENDAFTARAN CALON MAHASISWA MAGISTER FISIKA (Jalur Reguler dan Jalur Penelitian/Riset)
PERSYARATAN UMUM (untuk Jalur Reguler & Jalur Penelitian/Riset/by Research)
Departemen Fisika menerima pendaftaran mahasiswa Magister Fisika baik jalur reguler dan jalur penelitian (by research). Semua proses pendaftaran baik jalur reguler maupun jalur penelitian dilakukan melalui laman https://um.ugm.ac.id/prosedur-pendaftaran-magister/
Seminar Rebon 05 Mei 2021 oleh Dr. T. Marwan Irnaka, M.Sc.
Seminar Rebon 28 April 2021 oleh Dr. Eng. Anjar Taufik Hidayat
Aditya Rianjanu, Eka Nurfani, Muhamad F. Arif, Kuwat Triyana, Hutomo Suryo Wasisto
https://doi.org/10.1016/j.mtcomm.2020.101770
Journal : Materials Today Communications
Abstract
Stability is one of the crucial sensor properties to be applicable in real condition and yet hardly investigated. In this communication, we evaluated the stability of butanol vapor sensors that were constructed using quartz crystal microbalance (QCM) platforms coated with electrospun polyvinyl acetate (PVAc) nanofibers. The reliability test was performed by monitoring the sensor frequency characteristics in a long-term measurement, in which the frequency shift was found to decrease by ∼7% after the sensors have been tested for 100 times. This performance degradation was mainly attributed to the reduction of active membrane surface area caused by swelling of the nanofibers, which was confirmed by scanning electron microscopy (SEM) images. This finding does not only allow us to better understand the nanofiber-coated QCM sensor limitation and degradation process, but also to design appropriate strategies for mitigating the device stability issues.