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All Journal Science and Technology Indonesia Journal of Science and Applicative Technology Metal Indonesia Indonesian Physical Review Perwira Journal of Community Development (PJCD) J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Hadi Teguh Yudistira, Hadi Teguh
Program Studi Teknik Mesin, Institut Teknologi Sumatera (ITERA)
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics

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Journal : Journal of Science and Applicative Technology

 1 
Simulation of Electric Field Distribution on Meniscus of Electrospray with Zinc Oxide Material Andam Deatama Refino; Hadi Teguh Yudistira; Denny Hidayat Tri Nugroho; Deska Lismawenning
Journal of Science and Applicative Technology Vol 2 No 1 (2019): ICoSITeR Special Edition
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.718 KB) | DOI: 10.35472/281463

Abstract

Electrospray system had attracted attention of many researchers. It is due to easy to yield uniform thin film and possible for thin film mass production. The important parameters of electrospray process for getting uniform thin film are electric field distribution, surface substrate treatment and solvent properties. In this work, we observed electric field distribution on meniscus. Numerical work has carried out on this work. The material on meniscus used zinc oxide liquid properties. Voltage and walking distance between nozzle and substrate are the most important parameter to adjust electric field distribution. The decreasing walking distance with constant voltage yields increasing electric field distribution on meniscus. On vice versa, the increasing walking distance yields decreasing electric field distribution on meniscus. Increasing and decreasing voltage yields increasing and decreasing electric field distribution on meniscus, respectively.
Numerical Investigation of Electrospray Working Performance on Ethanol Andam Refino; Hadi Teguh Yudistira; Denny H. T. Nugroho; Deska L. Puspitarum
Journal of Science and Applicative Technology Vol 3 No 2 (2019): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1338.918 KB) | DOI: 10.35472/jsat.v3i2.196

Abstract

Electrospray as an alternative method to fabricate thin film is studied. High voltage is required by the electrospray system. The requirement of high voltage is different for various liquid depending on the surface tension property. Ethanol was used to resemble the solvent used in thin film deposition. From the experimental work, jetting performance did not occur despite of the high applied voltage which is around 1 KV. In this work, numerical calculation is carried out to find the reason behind of unsuccessful jetting at 1 KV applied voltage. The percentage of Rayleigh limit is around 0.4. Electrospray performance at walking distance 5 mm using ethanol is predicted to be stable when the applied high voltage is approximately 1.1 KV. The numerical investigation indicates that the jetting performance will occur if the applied voltage is more than 1.1 KV.
PENGGUNAAN METODE FINITE DIFFERENCE TIME DOMAIN (FDTD) DALAM SIMULASI PHASED ARRAY ANTENNA Hadi Teguh Yudistira
Journal of Science and Applicative Technology Vol 1 No 1 (2017): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1570.98 KB) | DOI: 10.35472/281436

Abstract

Finite Diffrence Time Domain merupakan metode simulasi yang digunakan dalam simulasi gelombang elektromagnetik dimana mengunakan prinsip dasar pendekatan numerik dari persamaan differensial dalam domain ruang dan waktu. Phased array antenna merupakan salah satu jenis antenna yang dapat diaplikasikan pada automotive radar. Phased array antenna yang disimulasikan terdiri dari microstrip antenna dengan jumlah 64 antenna ( 8 baris, 8 kolom). Microstrip antenna terdiri dari 3 bagian yaitu patch, substrate dan ground. Ukuran patch pada microstrip antenna adalah 1.2 x 2.6 mm. Permitivitas relatif substrate yang digunakan adalah 10.2. Hasil yang diperoleh dari simulasi ini adalah pola radiasi dari phased array antenna berbentuk directional.
Co-Authors Amelia Oktavia Andam Deatama Refino Andam Refino Byun, Doyoung Denny H. T. Nugroho Denny Hidayat Tri Nugroho Deska L. Puspitarum Deska Lismawenning Devia Gahana Cindi Alfian Eka Nurfani Eko Pujiyulianto Elmiawan, Puguh Fahmi, Achmad Gus Fajar Paundra Fuad Mulkan Al Machzumy Haloho, Trivendi Jukepri Brain Meliala M. Fahan Sidik M. Rafi Kurniawan Maulana, Sena Mtei, Brian Godwin Muhyi, Abdul Pasaribu, Joshua Leonardo Paundra, Fajar Pratama, Angga Jihan Pujiyulianto, Eko Rianjanu, Aditya Sipahutar, Wahyu Solafide Tarmizi Taher Tenggara, Ayodya Pradhipta