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All Journal Jurnal Ilmiah Biosaintropis (Bioscience-Tropic) Jurnal Biologi Tropis JMM (Jurnal Masyarakat Mandiri) ORBITA: Jurnal Pendidikan dan Ilmu Fisika KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pendidikan Fisika dan Teknologi EIGEN MATHEMATICS JOURNAL Indonesian Physical Review Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Jurnal Abdi Insani Jurnal Warta Desa (JWD) Media for Empowerment, Mobilization, and Innovation in Research & Community
Dian Wijaya Kurniawidi
Program Studi Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Public Health Social Sciences Other

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Journal : Indonesian Physical Review

 1 
SPEKTRO PLUVIOMETER SEBAGAI ALAT PENENTU DIAMETER DAN KECEPATAN JATUH BUTIRAN HUJAN Yulia Satriadi; I Wayan Sudiarta; Dian Wijaya Kurniawidi
Indonesian Physical Review Vol. 3 No. 1 (2020)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.723 KB) | DOI: 10.29303/ipr.v3i1.32

Abstract

Cuaca merupakan gejala alam yang terjadi dalam waktu yang relatif singkat, dan perubahan cuaca yang tiba-tiba dapat menimbulkan kejadian bencana alam. Fenomena cuaca yang berdampak langsung  antara lain adalah hujan. Dalam penelitian ini dilakukan penentuan diameter dan kecepatan jatuh butiran hujan. Diameter dan kecepatan jatuh butiran air yang dihasilkan dapat dijadikan sebagai pemodelan butiran hujan yang bermanfaat untuk mitigasi bencana. Penelitian ini menggunakan metode optical spektro pluviometer yang dilengkapi dengan laser diode sebagai pemancar cahaya dan sensor  cahaya TEMT6000 sebagai penerima cahaya. Prinsip kerja spektro pluviometer berdasarkan perubahan tegangan yang dihasilkan oleh butiran hujan ketika menghalangi cahaya ke sensor. Diameter butiran air yang terukur yaitu diameter butiran air hasil observasi (Dobs) berkisar pada rentang 3,8 mm – 5,7 mm,  diameter butiran air hasil model (Dmod) berkisar pada rentang 3,6 mm hingga 5,5 mm. Kecepatan jatuh butiran air hasil observasi (vobs) pada rentang 0,98 m/s – 1,7 m/s dan hasil kecepatan jatuh butiran air hasil model (vmod) pada rentang 0,9 m/s hingga 2,5 m/s.
THE THICKNESS OF A THIN FILM SYNTHESIZED FROM LIDAH MERTUA PLANT (SANSEVIERIA TRIFASCIATA) USING A DIP COATING METHOD Ervina Sandra Dewi; Siti Alaa; Dian Wijaya Kurniawidi; Susi Rahayu
Indonesian Physical Review Vol. 2 No. 3 (2019)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (386.668 KB) | DOI: 10.29303/ipr.v2i3.34

Abstract

A study has been conducted on the characterization of optical properties of thin films from lidah mertua (Sansevieria trifasciata) with dip coating method. The dip coating method was applied with different temperature and different time immersion treatments. The measuring variables in the manufacture of this thin film were tested based on the optical properties of their absorbance value of the extract and the thicknessof thin film. The absorbance spectral of extraction pigments were measured using UV-Vis in the wavelength range 350 nm to 700 nm. The results of the measurements showed that the extract of the S. trifasciata has high absorbance. Beside that, the minimum coating thickness is produced by a concentration of 12.5% with a 5 minute immersion time of 520 nm.
THE STUDY OF GRAPHENE BAND GAP USING HATREE FOCK METHOD IN MOLECULAR SCALE Siti Alaa; Muhammad Fajrin; Eva Nurhaliza; Dian Wijaya Kurniawidi; Susi Rahayu; I Wayan Sudiarta
Indonesian Physical Review Vol. 3 No. 1 (2020)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463 KB) | DOI: 10.29303/ipr.v3i1.35

Abstract

Graphene is known as an advanced material that has good electrical conductivity and heat conductivity. To understand the nature of graphene it is necessary to calculate the energy, band gap and vibrate frequency at the nanoscale. One method that can be used is the ab initio calculation using the Hatree-Fock method. In this research, we performed a computational study of the electronic properties of grapheme within RHF/STO-3G basis set in different cluster molecules.  From this study we get band gap for graphene in ab initio level, have a consistant value around zero.  Using ab initio method, we can obtain a deeper understanding about the graphene behaviour at the molecular scale.
Co-Authors ABDUL GANI Adella Ulyandana Jayatri Alaa, Siti Alfina Taurida Alaydrus Amrul Ikhsan Arif Budianto Baiq Nurul Alya Baiq R. S. Yusuf Bakti Sukrisna Dodi Mariadi Ervina Sandra Dewi Eva Nurhaliza Gaoura Valentina Handayana, I Gusti Ngurah Yudi Hasmiyatni Hasmiyatni I Wayan Ari Makmur I Wayan Sudiarta Ika Umratul Asni Aminy Intan Utami Irma Pratiwi Iwan Sumarlan Kholik Hidayatullah Kormil Saputra Laili Mardiana Lalu Sahrul Hudha Marlita Yudiawati Mar’atus Solihah Muhammad Fajrin Muhammad Zuhdi Nadila Rahmawati Nurul Qomariyah Rahmatun Inayah Ridho Ahyana Rinarto Subroto Ronodirdjo, Muhammad Zuhdi Sinta Devi Hariyanti Siti Alaa’ Sri Mulyani Suhayat Minardi Suhayat Minardi Susi Rahayu Syahrial A Syahrial Ayub Syahrial Ayub Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Teguh Ardianto, Teguh Wirawan, Rahadi Yulia Satriadi Yunitun Tamara