Article Per Year (5 Year)
p-Index From 2021 - 2026
4.408
P-Index
This Author published in this journals
All Journal POSITRON PRISMA FISIKA JURNAL FISIKA Jurnal Edukasi dan Penelitian Informatika (JEPIN) INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Surya Masyarakat Jurnal Ilmu Fisika Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika Jurnal Surya Masyarakat Jurnal Pendidikan Fisika dan Sains (JPFS) Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) JRFES
Bintoro Siswo Nugroho
Program Studi Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam Universitas Tanjungpura
Religion Humanities Astronomy Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Public Health Other

Published : 34 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 34 Documents
Search

 1   2   3   4 
Rancang Bangun Perangkat Eksperimen Gerak Jatuh Bebas Otomatis Berbasis mikrokontroler Robin Mahendra; Bintoro Siswo Nugroho; Azrul Azwar
Jurnal Pendidikan Fisika dan Sains (JPFS) Vol 8 No 2 (2025): September
Publisher : Pendidikan Fisika, FKIP, Universitas Nahdlatul Ulama Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52188/jpfs.v8i2.1307

Abstract

Gerak jatuh bebas merupakan salah satu fenomena fisika yang termasuk dalam kelompok GLBB. Gerak jatuh bebas diartikan sebagai gerak benda yang jatuh dari ketinggian tertentu tanpa adanya kecepatan awal dan hanya dipengaruhi oleh percepatan gravitasi bumi. Penentuan gravitasi dari gerak jatuh bebas sering kali dilakukan, sehingga penelitian ini bertujuan untuk merancang dan mengembangkan perangkat eksperimen berbasis mikrokontroler NodeMCU yang dilengkapi dengan sensor ultrasonik dan sensor inframerah guna mempermudah akuisisi data waktu dan ketinggian secara otomatis. perangkat ini memungkinkan data diakses melalui alamat IP dan ditampilkan secara real-time pada halaman website. Kinerja perangkat eksperimen ini kemudian dibandingkan dengan metode video tracker. Hasil menunjukkan bahwa perangkat eksperimen menghasilkan nilai percepatan gravitasi sebesar 10,533 m/s2 dengan %error sebesar 7,897 %akurasi sebesar 92,103% dan %presisi sebesar 1,827% berdasarkan 10 kali pengulangan. Sementara itu, nilai percepatan gravitasi yang diperoleh dari aplikasi video tracker adalah sebesar 11,322 m/s² dengan %error sebesar 15,760%, %akurasi sebesar 84,240% dengan standar deviasi 2,055. Berdasarkan hasil tersebut, perangkat eksperimen berbasis mikrokontroler dinilai lebih presisi, akurat, dan praktis dalam mengukur percepatan gravitasi melalui gerak jatuh bebas.
Exploring TiO2-PP as a Reusable Floating Photocatalyst for Humic Acid and Iron Removal in Peat Water Bintoro Siswo Nugroho; Asifa Asri; Yudha Arman
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 13, No 2 (2023): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v13i2.60342

Abstract

In this study, we fabricate TiO2-PP catalyst and analyze its use for peat water photodegradation. The photocatalyst is a thin layer of TiO2 deposited on the surface of polypropylene (PP) grains by the thermal milling method. Scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS) images indicate that the fabrication successfully deposited TiO2 particles on the PP grain surface homogeneously well. The results show that photocatalysis of peat water using TiO2-PP with solar irradiation is more effective than the UV lamp. After photocatalysis for 40 hours with solar irradiation, the humic acid content in peat water decreases significantly, accompanied by a decrease in Fe concentration. When being reused, TiO2-PP photocatalyst shows performance above 92% in the fourth iteration, while in the fifth iteration, the performance decreases to 83%. These results show that TiO2-PP has the potential to be applied as a reusable floating photocatalyst to reduce the humic acid and iron content in peat water.
Population Redistribution in a Continuously Driven Λ-Type Semiconductor Quantum Dot: Roles of Relaxation-Path Asymmetry And Off-Resonant Coupling Arik Ramadhan; Bintoro Siswo Nugroho; Asifa Asri; Azrul Azwar; Yudha Arman
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 16, No 1 (2026): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v16i1.117075

Abstract

Semiconductor quantum dots (SQDs) exhibit optical responses that are strongly influenced by their internal level structure, relaxation pathways, and excitation intensity. This study investigates the time- and intensity-dependent population dynamics of a continuously driven single -type three-level SQD using the density-matrix formalism within the rotating-wave approximation. Dissipative processes are incorporated through Lindblad-type relaxation terms, while the transient and stationary responses are obtained, respectively, by numerical time integration and steady-state solution of the density-matrix equations. Special attention is given to the relaxation channel  and the off-resonant transition dipole moment . The results show that  primarily controls the transient redistribution route and the timescale required to reach the stationary regime, whereas the early oscillatory behavior remains dominated by the resonantly driven  transition. In the steady-state regime,  mainly determines how population leaving the upper state is partitioned between the two lower states, while  governs how readily the off-resonant  branch becomes active as the driving intensity increases. Consequently, the crossover from predominantly resonant two-level-like behavior to genuine three-level population redistribution is controlled by the combined action of relaxation-path asymmetry and off-resonant coupling strength. These findings provide a clearer mechanism-based interpretation of driven population redistribution in effective multilevel SQD systems.
Optical Absorption Line Shape of a Λ-Type Three-Level Semiconductor Quantum Dot: Roles of Transition Dipole Moment and Relaxation Rate Bintoro Siswo Nugroho; Arik Ramadhan; Asifa Asri
Jurnal Ilmu Fisika Vol 18 No 2 (2026): September 2026 (Forthcoming Issue)
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.18.2.158-168.2026

Abstract

The optical absorption of an isolated Λ-type three-level semiconductor quantum dot under continuous-wave excitation was investigated theoretically using a semiclassical density-matrix approach. The equations of motion were derived from the master equation within the rotating-wave approximation and solved in the steady-state regime to obtain the optical susceptibility and absorption spectrum. The roles of the transition dipole moment and relaxation rate were examined systematically in both weak- and strong-field regimes. In the weak-field regime, the spectrum was dominated by the ∣1⟩↔∣3⟩ transition, while a weaker secondary feature associated with the ∣2⟩↔∣3⟩ transition emerged through relaxation-assisted population redistribution. Increasing the relaxation rate broadened and suppressed the dominant peak, whereas increasing the transition dipole moment mainly broadened the weaker secondary feature. In the strong-field regime, the two absorption channels merged into a broadened composite profile due to the combined effects of stronger coherent driving, power broadening, and relaxation. These results clarify how transition strength and dissipation govern the absorption line shape of an elementary multilevel semiconductor quantum-dot system.
Co-Authors Agus Prasetiono Alfaridzi, Raihan Antini, Oktari Arik Ramadhan Arik Ramadhan Asifa Asri Asifa Asri Asifa Asri Asifa Asri Asifa Asri Asifa Asri Azrul Azwar Azrul Azwar Boni Pahlanop Lapanporo Dawar, Teofilipus Delai, Departus Dwiria Wahyuni Elfriana, Rika Endhah Purwandari Fatisa, Huril Hasanuddin Hasanuddin Herkulanus, Herkulanus Hero Hartato Ica Sendawati Irfana Diah Faryuni Mega Nurhanisa Muhammad Azis Dwi Ludfi Irfandi Mustafa, Usliana Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhasanah Parnasari Parnasari Pernandes, Yudi Putra, Fikri Abdi Qariatus Shalihah Radhitya Perdhana REZKI, REZKI Riani Riani Riko Bintasa Rindiani Rindiani Rio Andreano Riza Adriat Robin Mahendra Simanjuntak, Sinur Agustina Br Sismita Sismita Siti Wildayati Susana Susana Untarto, Fikri Yudistira Eka Praja Wahyu Tri Hidayat Ya' Muhammad Arsyad Yayuk Susilowati Yudha Arman Yudha Arman Yudi Rosandi Yuliana Nurmala Dewi Yulyanto Yulyanto Yulyanto Yulyanto Yuris Sutanto Zulfian Zulfian