Nurrisma Puspitasari Nurrisma Puspitasari
Department of Physics, Institut Teknologi Sepuluh Nopember, Kampus ITS-Sukolilo Surabaya

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Macrobending Multimode Plastic Optical Fiber Coated with PANI-PVA composite as a pH sensor: Ali Yunus Rohedi, Rizqi Nur Ainun, Iim Fatimah, Nurrisma Puspitasari, S Sudarsono, Gatut Yudoyono Ali Yunus Rohedi Ali Yunus Rohedi; Rizqi Nur Ainun Rizqi Nur Ainun; Iim Fatimah Iim Fatimah; Nurrisma Puspitasari Nurrisma Puspitasari; Sudarsono Sudarsono; Gatut Yudoyono Gatut Yudoyono
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.19026

Abstract

The pH measurement is essential in medicine, industry, and research, and each requires measuring instruments with different sensitivities. Measuring the pH of a solution, in principle, measures hydrogen ions in the solution. In this study, a pH sensor was designed and fabricated using macrobending multimode optical fiber. The optical fiber cladding was peeled off and replaced with a PANI-PVA (polyaniline-polyvinyl alcohol) composite layer, bent with a 2.0 and 2.5 cm diameter. The results showed that the pH sensor could measure the solution's pH linearly in the range of pH = 2 to 8.
Fabrikasi Kanal Mikro pada Substrat Akrilik menggunakan Laser Cutting CO2: Sudarsono, Gatut Yudoyono, Faridawati, Hasto Sunarno, Nurrisma Puspitasari, Yono Hadi Pramono Sudarsono Sudarsono; Gatut Yudoyono Gatut Yudoyono; Faridawati Faridawati; Hasto Sunarno Hasto Sunarno; Nurrisma Puspitasari Nurrisma Puspitasari; Yono Hadi Pramono Yono Hadi Pramono
Jurnal Fisika dan Aplikasinya Vol 14 No 3 (2018): October 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i3.3867

Abstract

CO2 laser cutting machine is a tool used in working on cutting and engraving some materials such as polymers, glass, paper, fabric and some non-metallic materials. CO2 laser cutting machines are widely used to make indoor and outdoor decoration such as nameplates in several shops, offices, hotels, companies, exhibition halls, and some accessories such as trophies, key chains and some other accessories. In this research will be studied about the influence of CO2 laser cutting speed on the shape, width, and depth in making a kanal mikro optical waveguide on acrylic substrate. The fabrication results were observed using an optical microscope as well as width and depth calculations usingmicrometer shifts. Fromthe results of observation and analysis of fabrication, the results showed that the higher the CO2 laser speed the shallower the depth of the resulting. In this study the power used 2.4W and produced kanal mikro with the smallest depth of 190.91 µm with laser speed 100 mm/s and biggest 604.17 µm with laser speed 50 mm/s. From the results of this study recommended a good speed to make kanal mikro as an optical waveguide application is 95 mm/s and 100 mm/s with a power of 2.4 W.
Pengaruh Ketebalan Lapisan TiO2 terhadap Performasi Dye Sensitized Solar Cells: Nurrisma Puspitasari, Nurul Amalia Silviyanti, Gatut Yudoyono, Gontjang Prajitno, Agus Rubiyanto, Endarko Nurrisma Puspitasari Nurrisma Puspitasari; Nurul Amalia Silviyanti Nurul Amalia Silviyanti; Gatut Yudoyono Gatut Yudoyono; Gontjang Prajitno Gontjang Prajitno; Agus Rubiyanto Agus Rubiyanto; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 14 No 1 (2018): January 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i1.3553

Abstract

Dye Sensitized Solar Cell (DSSC) is the third generation of solar cells. DSSC is formed by sandwich structure, there are five parts: ITO glass (Indium Tin Oxide) as substrate; TiO2 as semiconductor material; dye (chlorophyll-turmeric-mangosteen) as an electron donor; gel electrolyte as electron transfer and active carbon as a catalyst in the counter electrode. The synthesis of nanometer-sized TiO2 powder is obtained by coprecipitation method. From the research that has been done, the efficiency of DSSC with 10 µm TiO2 layer thickness bigger than 20 µm and 30 µm layer thickness. The DSSC efficiency result is 0.25% for 10 µm TiO2 layer thickness , 0.143% for 20 µm TiO2 layer thickness, and 0.195% for 30 µm TiO2 layer thickness.
Pengaruh Jenis Katalis pada Elektroda Pembanding terhadap Efisiensi Dye Sensitized Solar Cells dengan Klorofil sebagai Dye Sensitizer: Nurrisma Puspitasari, Siti Rabiatul Adawiyah, Muhammad Noer Fajar, Gatut Yudoyono, Agus Rubiyanto, Endarko Nurrisma Puspitasari Nurrisma Puspitasari; Siti Rabiatul Adawiyah Siti Rabiatul Adawiyah; Muhammad Noer Fajar Muhammad Noer Fajar; Gatut Yudoyono Gatut Yudoyono; Agus Rubiyanto Agus Rubiyanto; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 13 No 1 (2017): January 2017 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v13i1.2150

Abstract

Dye-sensitized Solar Cell (DSSC) is a dye sensitized solar cells are formed by a sandwich structure where there are five parts include: glass ITO (Indium Tin Oxide) as a substrate; TiO2 as a semiconductor material; chlorophyll dye as an electron donor; electrolyte as electron transfer. Nanometer-sized TiO2 powder obtained through synthesis by coprecipitation method. Measurements were taken at the power of 100 mW/cm2. The results of the efficiency of DSSC using active carbon as a catalyst in the reference electrode, produces a larger percentage than black carbon and graphite, which is of 0.05% for active carbon, black carbon to 0.032%, 0.029% for graphite.