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All Journal POSITRON JFA (Jurnal Fisika dan Aplikasinya) PIKAT Science, Technology, and Communication Journal
Yohanes Dwi Saputra, Yohanes Dwi
Institut Teknologi Kalimantan
Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Other

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Mesin Carnot Kuantum Berbasis Partikel Dua Tingkat di dalam Kotak Potensial Satu Dimensi Saputra, Yohanes Dwi; Purwanto, Agus
Jurnal Fisika dan Aplikasinya Vol 6, No 1 (2010)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.926 KB) | DOI: 10.12962/j24604682.v6i1.915

Abstract

Telah dihitung efisiensi mesin Carnot kuantum berbasis partikel dua tingkat di dalam kotak potensial takhingga satu dimensi. Hasilnya hanya bergantung pada rasio volume selama proses adiabatik.
Quantum-Mechanical Brayton Engine for the Nonrelativistic Particle Trapped in a Symmetric Potential Box Fikri Abdillah; Yohanes Dwi Saputra
POSITRON Vol 10, No 2 (2020): Vol. 10 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (388.88 KB) | DOI: 10.26418/positron.v10i2.40832

Abstract

A theoretical quantum Brayton engine research has been carried out using a potential box system to increase its thermal efficiency. The method applied in this research is a classical thermodynamics system model in the form of a piston tube containing a monatomic ideal gas analogous to a quantum model in the form of a potential box containing one particle.  The efficiency formulation of the quantum Brayton engine obtained from this study is following the classical version. However, the efficiency value obtained on a quantum Brayton engine is higher when compared to its classic. It happens because the value of the Laplace constant owned by the Brayton quantum version is 3, while the classic version is 5/3.
PELATIHAN PERSIAPAN KOMPETISI SAINS NASIONAL BIDANG FISIKA BAGI SISWA SEKOLAH MENENGAH ATAS NEGERI 7 BALIKPAPAN Yohanes Dwi Saputra; Swastya Rahastama; Ashadi Sasongko; Fikri Abdillah; Fahriesa Ikhwal Sugiarto; Deny Susanto; Muhammad Aris Nur Kholik; Muhammad Iqbal; Dyfitta Hasna Febriany
Jurnal Pengabdian Kepada Masyarakat ITK (PIKAT) Vol. 3 No. 1 (2022): PIKAT : Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Institut Teknologi Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (758.725 KB) | DOI: 10.35718/pikat.v3i1.674

Abstract

Pelatihan Kompetisi Sains Nasional (KSN) bidang Fisika telah dilaksanakan di Sekolah Menengah Atas Negeri (SMAN) 7 Balikpapan. Pelatihan ini dilakukan karena kekurangan jumlah pelatih KSN, sedangkan ajang ini sangat bergengsi bagi para siswa SMA di seluruh Indonesia. Oleh karena itu, pelatihan ini diadakan untuk mempersiapkan para siswa menghadapi KSN 2020. Pelatihan ini menggunakan metode pembahasan soal secara intensif. Tahap-tahap yang dijalani adalah pre-test, pemantapan materi dasar KSN, pelatihan soal secara intensif, dan diakhiri post-test dengan soal-soal yang sebobot dengan pre-test. Pelatihan dilakukan secara luring dan daring. Hasilnya adalah salah seorang siswa binaan berhasil mendapatkan juara pertama KSN pada tingkat kota Balikpapan dan juara pertama babak penyisihan tingkat kota Balikpapan pada Pekan Fisika XXI Universitas Mulawarman. Hal ini membuktikan bahwa dengan adanya pelatihan KSN secara intensif oleh pelatih KSN yang mumpuni maka peluang juara semakin terbuka lebar.
Effect of Heat Leakage on Relativistic Quantum Lenoir Engine Performance with a Massless Boson as Working Substance in the Infinite Potential Box Saputra, Yohanes Dwi; Rahastama, Swastya; Firdaus, Rohim Aminullah
POSITRON Vol 14, No 1 (2024): Vol. 14 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i1.64658

Abstract

A study on the effect of heat leakage on power output, thermal efficiency, and reversibility rate in a relativistic quantum Lenoir engine has been conducted. Initially, we analogize the quantum working substance of the engine, a massless boson trapped in an infinite potential box with a movable right wall, as an ideal gas confined in a pistoned cylinder. Then, the total work, heat input, and heat output of each engine cycle which consists of isochoric, adiabatic expansion, and isobaric compression are extracted by applying the concept of quantum thermodynamics. Finally, power output, thermal efficiency, and reversibility rate of the engine are calculated for different variations of the heat leakage constant. The results are the relationship between several parameters which are expressed in the graph of thermal efficiency vs. compression ratio, graph of efficiency/normal efficiency vs. compression ratio, power output vs. efficiency, and reversibility rate vs. compression ratio. The conclusion is that an increase in heat leakage has an effect on reducing the efficiency and reversibility rate of the engine but does not affect its power output. This work will provide a new chapter for further research related to the use of the boson particle as a working substance in the quantum heat engine, especially the study of the heat leakage effect on engine performance.
Simulation of Quantum Tunnelling in Semiconductors: Analysis of Barrier Thickness Variation through the High Order FDTD Method Firdaus, Rohim Aminullah; Kurniawan, Ananda Rossy; Latifah, Eny; Saputra, Yohanes Dwi; Masulah, Bidayatul; Winarno, Nanang
POSITRON Vol 14, No 2 (2024): Vol. 14 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i2.82415

Abstract

The time-dependent Schrödinger equation is fundamental to quantum mechanics, describing the temporal evolution of quantum systems. This research presents a High-Order Finite-Difference Time-Domain (HO-FDTD) method, employing Taylor series expansion to solve the equation with enhanced efficiency and accuracy. By advancing beyond traditional methods like first-order Taylor series (Crank-Nicolson, forward or backward Euler) or computationally intensive Runge-Kutta schemes, the HO-FDTD method leverages higher-order Taylor expansion for the time evolution operator while simultaneously refining the Laplacian operator. This dual improvement enhances precision, allowing for accurate modeling of complex quantum phenomena. Focusing on quantum tunneling, a critical process where electrons traverse potential barriers despite insufficient classical energy, the study examines tunneling probabilities and electron behavior across barriers of varying thickness in semiconductors. The simulations reveal that thicker barriers reduce tunneling probabilities, amplify deviations in electron positions, and indicate energy transfer during interactions, with increased resistance lowering kinetic energy and raising potential energy. These findings emphasize the significant influence of barrier thickness on quantum tunneling and highlight the HO-FDTD method’s capability to capture intricate quantum dynamics, establishing it as a robust tool for advancing research and applications in quantum mechanics.
One-dimensional analysis of underground water using geoelectric methods Malik, Usman; Defrianto, Defrianto; Zulfa, Zulfa; Saputra, Yohanes Dwi; Muhammad, Juandi
Science, Technology and Communication Journal Vol. 4 No. 1 (2023): SINTECHCOM Journal (October 2023)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v4i1.252

Abstract

The regional development issues in Tambang Kampar District that are most important to solve are environmental issues related to surface water potential and limited clean water. Environmental potential through good environmental management can become potential natural resources that can be utilized to support the regional economic sector. Groundwater potential needs to be studied and interpreted in the matrix of groundwater resource management through geophysical studies, namely by using the geoelectric method. This matrix will be able to provide solutions to environmental problems with the potential for fresh water in Tambang District, Kampar, thereby supporting economic growth in terms of meeting water needs. The material that is the object of research is underground water, and the aspects of research that will be studied include clean water exploration and environmentally friendly management patterns of potential underground water resources. The research location is Tambang District, Kampar, Riau Province. The targeted finding is an environmental management model of potential underground water resources in Tambang Kampar District using the Schlumberger rule geoelectrical method. Fundamental contributions to a field of science are geophysics and environmental science disciplines related to groundwater availability.
Co-Authors Agus Purwanto Ashadi Sasongko Defrianto Defrianto Deny Susanto Dyfitta Hasna Febriany Eny Latifah, Eny Fahriesa Ikhwal Sugiarto Fikri Abdillah Fikri Abdillah Firdaus, Rohim Aminullah Juandi Juandi Kurniawan, Ananda Rossy Masulah, Bidayatul Muhammad Aris Nur Kholik Muhammad Iqbal Nanang Winarno Rahastama, Swastya Swastya Rahastama Usman Usman Zulfa Zulfa