NAHARI IHSAN, . (2024) ANALISIS TERMODINAMIK DAN STURKTUR LAPISAN TIPIS EMAS DAN PERAK YANG DIBERI PERLAKUAN PANAS: STUDI DINAMIKA MOLEKULER DENGAN LAMMPS. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
NAHARI IHSAN. Analisis Termodinamik dan Struktur Lapisan Tipis Emas dan Perak yang Diberi Perlakuan Panas: Studi Dinamika Molekuler dengan LAMMPS. Di bawah bimbingan RISER FAHDIRAN, HARIS SUHENDAR. Pada penelitian ini, dilakukan simulasi dinamika molekuler menggunakan perangkat lunak LAMMPS untuk mengamati perubahan termodinamik dan struktur atom pada lapisan tipis emas (Au) dan perak (Ag) yang diberi perlakuan panas. Penelitian ini bertujuan untuk mengimplementasikan simulasi dinamika molekuler pada lapisan tipis emas dan perak, menganalisis perbandingan antara waktu (ps) dengan suhu (K) serta tekanan (GPa) dengan waktu (ps) pada kedua material, dan mengamati perubahan struktur kristal menggunakan Common Neighbor Analysis (CNA) dalam perangkat lunak OVITO. Hasil penelitian menunjukkan bahwa emas memiliki kestabilan struktur yang lebih tinggi dibandingkan perak selama proses pemanasan, dengan penurunan persentase FCC yang lebih lambat. Selain itu, analisis CNA menunjukkan perubahan signifikan dalam struktur kristal pada kedua material saat dipanaskan, yang diidentifikasi sebagai transformasi fase dan rekristalisasi. Kata Kunci: Simulasi Dinamika Molekuler, LAMMPS, Lapisan Tipis, Emas, Perak, Termodinamik, Struktur Atom, Common Neighbor Analysis, OVITO. ***** NAHARI IHSAN. Thermodynamic and Structure Analysis of Heat Treatment Thin Layers of Gold and Silver: A Molecular Dynamics Study with LAMMPS. Supervised by RISER FAHDIRAN, HARIS SUHENDAR. In this study, molecular dynamics simulations using LAMMPS software were conducted to observe thermodynamic and atomic structure changes in heat-treated gold (Au) and silver (Ag) thin films. This study aims to implement molecular dynamics simulations on gold and silver thin films, analyze the comparison between time (ps) with temperature (K) and pressure (GPa) with time (ps) on both materials, and observe changes in crystal structure using Common Neighbor Analysis (CNA) in OVITO software. The results show that gold has higher structural stability than silver during the heating process, with a slower decrease in FCC percentage. In addition, CNA analysis showed significant changes in the crystal structure of both materials upon heating, which were identified as phase transformation and recrystallization. Keywords: Molecular Dynamics Simulation, LAMMPS, Thin Layers, Gold, Silver, Thermodynamics, Atomic Structure, Common Neighbor Analysis, OVITO.
Item Type: | Thesis (Sarjana) |
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Additional Information: | 1). Riser Fahdiran, M.Si. ; 2). Haris Suhendar, S.Si., M.Sc. |
Subjects: | Sains > Fisika |
Divisions: | FMIPA > S1 Fisika |
Depositing User: | Users 24354 not found. |
Date Deposited: | 06 Aug 2024 00:25 |
Last Modified: | 08 Aug 2024 01:11 |
URI: | http://repository.unj.ac.id/id/eprint/48641 |
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