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

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Karakterisasi Pengaruh Temperatur Kalsinasi pada Intensitas emisi Material Luminisensi ZnO:Zn: Diky Anggoro, Raidah Syarifah, Hasto Sunarno, F Faridawati, Bachtera Indarto Diky Anggoro Diky Anggoro; Raidah Syarifah Raidah Syarifah; Hasto Sunarno Hasto Sunarno; Faridawati Faridawati; Bachtera Indarto Bachtera Indarto
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.v14i3.4165

Abstract

Characterization of the effect of temperature on emission intensity ZnO:Zn luminance material has been carried out. This research was conducted to determine the optical properties of ZnO:Zn as a luminous material and the effect of temperature on emission intensity of ZnO luminance material will be analyzed: Zn at 5% dopant concentration. ZnO synthesis was carried out using the solution phase method and in obtaining the ZnO:ZnO:luminous material, the milling method was used. The best absorbance spectrum is produced by ZnO:Zn with the highest calcination temperature of 4000 C. Based on the photoluminniscence spectrum characterization it is known that ZnO: Zn luminance material with temperature variations is capable of emitting green light with a wavelength range of 523 nm. Temperature variation given will affect the high intensity of ZnO emission: Zn produced as the temperature increases.
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 Konsentrasi Doping terhadap Intensitas Emisi Material Luminisensi ZnO:Zn: Diky Anggoro, Rizki Yuniasari, Hasto Sunarno, F Faridawati Diky Anggoro Diky Anggoro; Rizki Yuniasari Rizki Yuniasari; Hasto Sunarno Hasto Sunarno; Faridawati Faridawati
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.v14i1.3554

Abstract

The luminance of Zinc Oxide materials has been synthesized using the phase solution method. The calcination process is carried out at a temperature of 8000 C. Performed phase identification, optical characterization, and luminance intensity generated by ZnO synthesis results. Addition of doping was done by using doping concentration of 1%, 3%, and 5% with a calcination temperature of 3000 C to obtain ZnO: Zn. We do phase identification and optical characterization of the three samples produced. The intensity of luminescence was tested to determine the effect of adding doping concentrations to the emissions produced by luminance materials ZnO: Zn. Obtained luminance material results emit green emissions with 510 nm to 535 nm wavelength range. The higher the doping concentration will be the more activators (doping) in the host (ZnO) that absorbs the energy for the excitation process so that the higher emission intensity emitted.
Co-Authors Bachtera Indarto Bachtera Indarto Diky Anggoro Diky Anggoro Gatut Yudoyono Gatut Yudoyono Hasto Sunarno Hasto Sunarno Nurrisma Puspitasari Nurrisma Puspitasari Raidah Syarifah Raidah Syarifah Rizki Yuniasari Rizki Yuniasari Sudarsono Sudarsono Yono Hadi Pramono Yono Hadi Pramono