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All Journal Journal of Engineering and Technological Sciences Indonesian Journal of Science and Technology Journal of Science and Applicative Technology Emerging Science Journal Indonesian Journal of Chemistry Jurnal Otomasi Kontrol dan Instrumentasi Molekul: Jurnal Ilmiah Kimia Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Makara Journal of Technology

Brian Yuliarto

Engineering Physics Program, Faculty of Industrial Technology, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132,

Author-ID : 424972

Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

Published : 14 Documents Claim Missing Document

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The Effect of Tin Addition to ZnO Nanosheet Thin Films for Ethanol and Isopropyl Alcohol Sensor Applications Yuliarto, Brian; Julia, Sri; Wulan S., Ni Luh; Iqbal, Muhammad; Ramadhani, Muhammad F.; Nugraha, N.
Journal of Engineering and Technological Sciences Vol 47, No 1 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

The requirements of green environmental and public health monitoring have become stricter along with greater world attention for global warming. The most common pollutants in the environment that need tightened control are volatile organic compounds (VOC). Compared to other kinds of sensors, semiconductor sensors have certain advantages,Â including high sensitivity, fast response, simplicity, high reliability and low cost. In this work, ZnO and Sn-doped ZnO nanostructure materials with high surface nanosheet areas were synthesized using chemical bath deposition. The X-ray diffraction patternsÂ could be indexedÂ according toÂ crystallinityÂ mainly to a hexagonal wurzite ZnO structure. The scanning electron microscopy (SEM) results showed that in all samples, the thin films after the addition of Sn consisted of many kinds of microstructure patterns on a nanoscale, with various sheet shapes. The sensor performance characterizations showed that VOC levels as low as 3 vol% of isopropyl alcohol (IPA) and ethanol could be detected at sensitivities of 83.86% and 85.57%, respectively. The highest sensitivity of all sensors was found at an Sn doping of 1.4 at%. This high sensor sensitivity is a result of the high surface area and Sn doping, which in turn produced a higher absorption of the targeted gas.

Performance Analysis of Energy Storage in Smart Microgrid Based on Historical Data of Individual Battery Temperature and Voltage Changes Haq, Irsyad Nashirul; Kurniadi, Deddy; Leksono, Edi; Yuliarto, Brian; Soelami, F.X. Nugroho
Journal of Engineering and Technological Sciences Vol 51, No 2 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

In this work, a historical data based battery management system (BMS) was successfully developed and implemented using an embedded system for condition monitoring of a battery energy storage system in a smart microgrid. The performance was assessed for 28 days of operating time with a one-minute sampling time. The historical data showed that the maximum temperature increment and the maximum temperature difference between the batteries were 4.5 °C and 2.8 °C. One of the batteries had a high voltage rate of change, i.e. above 3.0 V/min, and its temperature rate of change was very sensitive, even at low voltage rate of changes. This phenomenon tends to indicate problems that may deplete the battery energy storage system’s total capacity. The primary findings of this study are that the voltage and temperature rates of change of individual batteries in real operating conditions can be used to diagnose and foresee imminent failure, and in the event of a failure occurring the root cause of the problem can be found by using the historical data based BMS. To ensure further safety and reliability of acceptable practical operating conditions, rate of change limits are proposed based on battery characteristics for temperatures below 0.5 °C/min and voltages below 3.0 V/min.

The Effect of Tin Addition to ZnO Nanosheet Thin Films for Ethanol and Isopropyl Alcohol Sensor Applications Brian Yuliarto; Sri Julia; Ni Luh Wulan S.; Muhammad Iqbal; Muhammad F. Ramadhani; N. Nugraha
Journal of Engineering and Technological Sciences Vol. 47 No. 1 (2015)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2015.47.1.6

The requirements of green environmental and public health monitoring have become stricter along with greater world attention for global warming. The most common pollutants in the environment that need tightened control are volatile organic compounds (VOC). Compared to other kinds of sensors, semiconductor sensors have certain advantages, including high sensitivity, fast response, simplicity, high reliability and low cost. In this work, ZnO and Sn-doped ZnO nanostructure materials with high surface nanosheet areas were synthesized using chemical bath deposition. The X-ray diffraction patterns could be indexed according to crystallinity mainly to a hexagonal wurzite ZnO structure. The scanning electron microscopy (SEM) results showed that in all samples, the thin films after the addition of Sn consisted of many kinds of microstructure patterns on a nanoscale, with various sheet shapes. The sensor performance characterizations showed that VOC levels as low as 3 vol% of isopropyl alcohol (IPA) and ethanol could be detected at sensitivities of 83.86% and 85.57%, respectively. The highest sensitivity of all sensors was found at an Sn doping of 1.4 at%. This high sensor sensitivity is a result of the high surface area and Sn doping, which in turn produced a higher absorption of the targeted gas.

Performance Analysis of Energy Storage in Smart Microgrid Based on Historical Data of Individual Battery Temperature and Voltage Changes Irsyad Nashirul Haq; Deddy Kurniadi; Edi Leksono; Brian Yuliarto; F.X. Nugroho Soelami
Journal of Engineering and Technological Sciences Vol. 51 No. 2 (2019)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.2.1

In this work, a historical data based battery management system (BMS) was successfully developed and implemented using an embedded system for condition monitoring of a battery energy storage system in a smart microgrid. The performance was assessed for 28 days of operating time with a one-minute sampling time. The historical data showed that the maximum temperature increment and the maximum temperature difference between the batteries were 4.5 °C and 2.8 °C. One of the batteries had a high voltage rate of change, i.e. above 3.0 V/min, and its temperature rate of change was very sensitive, even at low voltage rate of changes. This phenomenon tends to indicate problems that may deplete the battery energy storage system's total capacity. The primary findings of this study are that the voltage and temperature rates of change of individual batteries in real operating conditions can be used to diagnose and foresee imminent failure, and in the event of a failure occurring the root cause of the problem can be found by using the historical data based BMS. To ensure further safety and reliability of acceptable practical operating conditions, rate of change limits are proposed based on battery characteristics for temperatures below 0.5 °C/min and voltages below 3.0 V/min.

Desain dan Pembuatan Sistem Pengukuran Kualitas Udara Menggunakan Mikrokontroler M. Sadeli Amli; Brian Yuliarto; Nugraha Nugraha
Jurnal Otomasi Kontrol dan Instrumentasi Vol 7 No 1 (2015): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2015.7.1.1

Abstrak Polusi udara muncul menjadi masalah terbesar di kota-kota besar. Polutan yang ada di udara tersebut berbahaya bagi kesehatan manusia dan lingkungan. Oleh karena itu, sangatlah penting untuk melakukan pemantauan kualitas udara. Namun, alat pemantauan yang ada saat ini memiliki banyak kekurangan di antaranya sangat statis, harganya mencapai Rp 5,5 milyar untuk satu unit, dan data yang ditampilkan tidak real time dan online. Penelitian ini menitikberatkan pada desain dan pembuatan sistem pengukuran kualitas udara agar dapat menghasilkan data pengukuran yang akurat dan datanya dapat ditampilkan pada situs jaringan. Skema sistem pengukuran kualitas udara ini terdiri dari sistem pengukuran, sistem database, dan sistem presentasi data. Modul pengukur terdiri dari sensor elektrokimia (CO-B4 dan SO2-B4), pengondisi sinyal (ISB dan analog to digital converter), mikrokontroler Arduino, modul GSM/GPRS dan modul micro SD card. Sistem database menggunakan database MySQL dan presentasi data berupa aplikasi berbasis web. Sistem pengukuran berhasil mengirimkan data dari modul pengukur ke sistem database dengan tingkat keberhasilan pengiriman data mencapai 99,82%. Rata-rata waktu tempuh pengiriman data adalah 120 detik, sesuai dengan yang telah diprogramkan. Sensor gas CO-B4 telah berhasil dikalibrasi dengan baik dan telah menunjukkan tingkat akurasi yang sangat tinggi, yaitu sebesar 97,03% dengan rentang kesalahan absolut [10-3;18,2]%. Data hasil pengukuran tersebut sudah dikonversikan ke dalam bentuk ISPU (Indeks Standar Pencemar Udara) dan dapat diakses pada situs jaringan secara real time dan online. Kata kunci: polutan, polusi udara, sensor elektrokimia, mikrokontroler, sistem pengukuran, real time

Preparation of Polycrystalline Silicon from Rice Husk by Thermal Decomposition and Aluminothermic Reduction Ahmad Nuruddin; Brian Yuliarto; Adhitya Gandaryus Saputro; Badruzaman Badruzaman; Aditianto Ramelan
Molekul Vol 15, No 1 (2020)
Publisher : Universitas Jenderal Soedirman

Polycrystalline silicon was extracted from rice husk by thermal decomposition and aluminothermic methods. Rice husk was thermally decomposed under various heat treatments and acid purifications. High purity silica of 99.81% was obtained by subsequent rice husk washing, pressure cooking in mixed chloride acid peroxide solution, and burning at 500oC for one hour. Aluminothermic reduction of silica was conducted at various calcination temperatures. It is found that 78.6% of silica was converted to silicon for calcination temperature of 800oC. Leaching the reduction product with strong hydrochloric and hydrofluoric acids produced silicon polycrystalline with a purity of 99.91%.

Synthesis and Characterization of Nanocomposites Tin Oxide-Graphene Doping Pd Using Polyol Method Aminuddin Debataraja; Robeth Viktoria Manurung; Lia A.T.W. Asri; Brian Yuliarto; Nugraha Nugraha; Bambang Sunendar
Indonesian Journal of Chemistry Vol 18, No 2 (2018)
Publisher : Universitas Gadjah Mada

This paper report on polyol method for Pd doped tin oxide-graphene nanocomposite thin film. XRD result shows sharp peaks at certain 2θ value and match with tin oxide, graphene, and Pd database. FTIR result shows peak from alcohol chain for –OH strong bonded absorption (3444 cm-1), also there are aldehyde and ketone which are indicated by C=O strong absorption (1751 cm-1). Moreover, alkene is also formed for decreasing symmetry intensity C=C (1616 cm-1), while alkyne is formed at strong deformation absorption at 646 and 613 cm-1. SEM and TEM result show SnO2 particles are attached uniformly on graphene surface layer. The composition for C, O, Sn, and Pd are 33.13, 25.58, 35.35 and 5.94%, respectively. This result indicated that the good composition is formed for Pd doped SnO2-graphene nanocomposite. The nanocomposite is promising materials for toxic gas sensor application at low temperature.

Preparation of Copper Oxide Nanostructure Thin Film For Carbon Monoxide Gas Sensor Brian Yuliarto
Molekul Vol 11, No 2 (2016)
Publisher : Universitas Jenderal Soedirman

This work reports the synthesis of nanostructure of CuO thin film using dip coating and chemical bath deposition method. Seed layer was deposited by dip coating method using zinc nitrate as a precursor. The CuO nanostructure has successfully grown on CBD process at 95oC for 6 hours. The X Ray Diffraction characterization result shows that the CuO has monoclinic crystallization and good crystallinity. Moreover, the Scanning Electron Microscope characterization results shows that CuO has nanospike-like shape. The CuO thin film as a gas sensor shows relatively high response on CO gas at the temperature working above 200oC. The highest response is obtained at 350oC of working temperature toward 30 ppm CO gas at 186% of sensor response.

Series-Interconnected Plastic Dye-Sensitized Solar Cells Prepared by Low- Temperature Binder-Free Titania Paste Rosa, Erlyta Septa; Muliani, Lia; Shobih, Shobih; Hidayat, Jojo; Yuliarto, Brian
Makara Journal of Technology Vol. 18, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

The aim of this research is to study dye-sensitized solar cells (DSSC). This was implemented on a flexible polyethylene terephthalate (PET) substrate using a mixture of transparent and scattered mesoporous anatase-titania as the electron transport layer for the photoelectrode. This mixture of anatase titania performed a dual function of light scattering and efficient dye absorption. In this study, a porous nano-TiO2 film was prepared on indium tin oxide (ITO) coated polyethylene terephthalate (PET) by using a binder-free titania paste; on it, a DSSC was fabricated. The paste which contained a mixture of TiO2 nanoparticles, acid chloride, and ethanol was printed on two patterns of 1x6 cm2 active areas followed by sintered at 120 ºC to form TiO2 films. A commercial dye, N719, was adsorbed on the surface of TiO2 films and assembled to two platinized conductive plastic patterns to form a counter electrode and thus a sandwich-type dye cell. Finally, a solution of KI/I2 electrolytes was injected into the cell in which a couple of sandwich-type dye cells with an active area of 6 cm2 for each cell were series interconnected with a z-type interconnection between the photoelectrode of one cell and the counter electrode of another cell. The cell performance was characterized by employing simulated solar light at an intensity of 50 mW/cm2. The results showed interconnected cells generating a short-circuit photocurrent density of 2.34 mA/cm2, an open-circuit voltage of 1.10 volt, and overall 0.172% power conversion efficiency.

Electrical and optical properties of Ga-doped ZnO thin films deposited by DC magnetron sputtering Lukman Nulhakim; Monna Rozana; Brian Yuliarto; Hisao Makino
Journal of Science and Applicative Technology Vol 4 No 1 (2020): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

The electrical and optical properties of Ga-doped ZnO (GZO) thin film prepared by direct current (dc) magnetron sputtering were investigated. The GZO thin film was deposited on a glass substrate at a substrate temperature (Ts) of room temperature (RT), 150 Â°C, and 200 Â°C using DC power of 100 W and an Ar gas flow rate of 450 sccm. The thickness of films was maintained at about 200 nm by controlling the deposition rate of about 12.5 nm/minute. The result showed that the electrical properties improved with increasing Ts. The films deposited at Ts of 200 Â°C showed the lowest resistivity, highest hall mobility, and carrier concentration compared to other Ts. The average transmittance of the films in the visible range (380-750 nm) was approximately 86.04%. The value of the optical band gap (Eg) was approximately 3.8 eV. The results suggested that GZO films deposited by DC magnetron sputtering at Ts of 200 Â°C can be applied to transparent conducting oxide (TCO) as an electrode in optoelectronic applications such as solar cells, LEDs and display technology.

Co-Authors Adhitya Gandaryus Saputro Aditianto Ramelan Ahmad Nuruddin Aminuddin Debataraja Andrivo Rusydi Apri Wiyono Badruzaman Badruzaman Bambang Sunendar Budi Mulyanti Chandra Wulandari Deddy Kurniadi Deddy Kurniadi, Deddy Edi Leksono Erlyta Septa Rosa Erlyta Septa Rosa F.X. Nugroho Soelami Haq, Irsyad Nashirul Harito, Christian Hisao Makino Ida Hamidah Irsyad Nashirul Haq Jojo Hidayat Jumril Yunas Lia A.T.W. Asri Lia Muliani Lilik Hasanah Lukman Nulhakim M. Sadeli Amli Markus Diantoro Monna Rozana Muhammad F. Ramadhani Muhammad F. Ramadhani Muhammad Iqbal Muhammad Iqbal N. Nugraha N. Nugraha Ni Luh Wulan S. Ni Luh Wulan S. Ni Luh Wulan Septiani Nugraha Nugraha Nugraha Nugraha Nugraha Nugraha Prajitna, Stefanus H. Raihan, Muhammad Fadlan Ramdhani Ramdhani Robeth Viktoria Manurung Roer Eka Pawinanto, Roer Eka Shobih Shobih Soelami, F.X. Nugroho Sri Julia Sri Julia Triati Dewi Kencana Wungu

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