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Hasil Pencarian

Ditemukan 8 dokumen yang sesuai dengan query
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Affi Nur Hidayah
Sifat optik au-ag nanoalloys yang disintesis dengan tehnik laser radiasi femtosecond = Optical properties of Au-Ag nanoalloys synthesized by femtosecond laser technique
" Au-Ag nanoalloys disintesis dengan menggunakan tehnik laser radiasi femtosecond dengan metode top-down maupun bottom-up. Metode top-down Au-Ag nanoalloys disintesis dari pelat Au dan Ag sedangkan metode bottom-up disintesis dari garam metal silver nitrate AgNO3 dan garam metal emas Potassium gold III chloride K AuCl4 . Pada metode top-down, pelat Au dan Ag ditembak dengan radiasi laser femtosecond, dihasilkan nanopartikel emas AuNPs dan nanopartikel perak AgNPs dengan waktu abalasi 25 menit dan 1 jam. Kemudian dicampur ... "
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2018
T51577
UI - Tesis Membership  Universitas Indonesia Library
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Maria Margaretha Suliyanti
Laser-induced plasma at reduced pressure and its application for solid organic sample analysis
" ABSTRACT A series of experimental studies on the emission spectra of laser-induced plasma at reduced ambient gas pressure were carried out for the analyses of organic materials. The plasma was generated by means of a Q-switch Nd-YAG laser having a pulse width of 8 ns, wavelength of 1,064 nm and operated at an energy of 120 mJ. The emission was detected with time-integrated and time resolved spectroscopic techniques. These studies were intended to investigate the possible ... "
2006
D1358
UI - Disertasi Membership  Universitas Indonesia Library
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Maria Margaretha Suliyanti
Laser-induced plasma at reduced pressure and its application for solid organic sample analysis
" ABSTRACT A series of experimental studies on the emission spectra of laser-induced plasma at reduced ambient gas pressure were carried out for the analyses of organic materials. The plasma was generated by means of a Q-switch Nd-YAG laser having a pulse width of 8 ns, wavelength of 1,064 nm and operated at an energy of 120 mJ. The emission was detected with time-integrated and time resolved spectroscopic techniques. These studies were intended to investigate the possible ... "
2006
D676
UI - Disertasi Membership  Universitas Indonesia Library
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Lin Prasetyani
Pengembangan metode koreksi bentuk output laser dioda 450-nm dan karakterisasi kebutuhan intensitas serta burning time pada proses engraving = 450nm laser diode beam shaping method for repairing burning footprint in engraving process
" ABSTRAK
Pada proses engraving penggunaan laser berdaya tinggi marak digunakan saat ini. Laser daya tinggi yang sering digunakan adalah laser gas seperti CO2, Nd:YaG dan laser diode. Laser diode memiliki beberapa kekurangan diantaranya sudut divergensi lebar, astigmatisme dan beam profile yang tidak ideal yang berbentuk elips. Kekurangan tersebut menyebabkan kualitas beam profile yang buruk. Oleh karena itu perlu dilakukan koreksi beam pada output diode untuk mengurangi rasio elips yang dimilikinya. Metode koreksi yang umum dilakukan adalah ... "
2017
T47744
UI - Tesis Membership  Universitas Indonesia Library
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Andeka Tris Susanto
Akusisi dan rekonstruksi citra pada sistem komputasi tomografi sinar-x berbasis digital fluoroskopi untuk penggunaan di industri manufaktur = Image acquisition and reconstruction of x-ray computed tomography system based on digital fluoroscopy for manufacturing industry.
" Saat ini komputasi tomografi (CT) sinar-X sudah banyak diterapkan di industri manufaktur untuk keperluan kontrol kualitas seperti penentuan cacat, porositas, koreksi geometri manufaktur dan reverse engineering. Kemampuan untuk memeriksa struktur internal material yang kompleks tanpa merusak konstruksi material tersebut merupakan salah satu keuntungan CT industri. Namun biaya perangkat CT industri komersial sangat mahal, karena hampir semuanya diimpor. Penelitian ini bertujuan untuk mengembangkan perangkat CT sinar-X berbasis fluoroskopi untuk industri manufaktur. Perangkat ini terdiri dari komponen ... "
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2021
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
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Applications of laser-plasma interactions
Boca Raton: CRC Press, Taylor & Francis Group, 2009
621.366 APP
Buku Teks  Universitas Indonesia Library
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Femtosecond laser micromachining : photonic and microfluidic devices in transparent materials
" The book is mainly focused on micromachining of transparent materials which, due to the nonlinear absorption mechanism of ultrashort pulses, allows unique three-dimensional capabilities and can be exploited for the fabrication of complex microsystems with unprecedented functionalities ... "
Berlin : Springer, 2012
e20425242
eBooks  Universitas Indonesia Library
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Madou, Marc J.
Fundamentals of microfabrication and nanotechnology
" "Providing a clear theoretical understanding of MEMS and NEMS, Solid-State Physics, Fluidics, and Analytical Techniques in Micro- and Nanotechnology covers all aspects of solid state physics behind nanotechnology and science. After exploring the rise of Si, MEMS, and NEMS in a historical context, the text discusses crystallography, quantum mechanics, the band theory of solids, and the silicon single crystal. It concludes with coverage of photonics, the quantum hall effect, and superconductivity. The text offers end-of-chapter ... "
Boca Raton, FL: CRC Press, 2012
621.381 52 MAD f
Buku Teks  Universitas Indonesia Library