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All Journal Jurnal Sains dan Teknologi Natural B JFA (Jurnal Fisika dan Aplikasinya) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Phenomenon : Jurnal Pendidikan MIPA Edu Sains: Jurnal Pendidikan Sains dan Matematika Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Fisika FLUX Jurnal Sains Teknologi dan Lingkungan (JSTL) INKUIRI : Jurnal Pendidikan IPA JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Journal of Natural Science and Integration Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Indonesian Physical Review Relativitas : Jurnal Riset Inovasi Pembelajaran Fisika
Lalu A. Didik
Universitas Islam Negeri Mataram
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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ANALISIS PERGESERAN LEMPENG BUMI YANG MENINGKATKAN POTENSI TERJADINYA GEMPA BUMI DI PULAU LOMBOK Yanita Syafitri; Bahtiar Bahtiar; Lalu A. Didik
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 4 No 2 (2019): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1005.361 KB) | DOI: 10.20414/konstan.v4i2.43

Abstract

This research is a qualitative research. Where the purpose of this research is to find out how the shifts of the earth’s plates around Lombok Island can increase the frequency of potential earthquakes on Lombok Island. This study uses a qualitative approach by paying attention to the theory of earth’s plates and the movements of the earh’s plates that have been described previously. The results of this study indicate a link between earth plate shifts and the frequency of earthquakes on Lombok Island. The world’s active tectonic plates in which the movements of two of them (the Indo-Australian Plate and the Eurasian Plate) greatly affect the frequency of earthquakes due to passing through Lombok Island. In addition to the two active tectonics plates of the world, there is also one Fault namely the Flores Up Fault which stretches from Flores to Lombok Island which forms a trough amd is very active.
Pengukuran Indeks Bias Larutan untuk Mengetahui Kadar Gula dalam Tebu dengan Menggunakan Metode Difraksi Fraunhofer Celah Tunggal Lalu A. Didik; Irfan Safarwadi; Muslimah Muslimah
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 6 No 1 (2021): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v6i1.68

Abstract

Refractive index measurements of sugar solutions have been carried out in several concentrations. The method used is fraunhofer diffraction. The equation of relationship between the concentration of the sugar solution and the refractive index based on the results of the linear fitting can be written as, Where n is the refractive index of the sugar solution and x is the solution concentration. From this equation, a fairly small gradient value of 1.59145 is obtained. This shows that a 1% increase in the concentration of the sugar solution will cause the refractive index to decrease by 1.59145. The refractive index of the solution changes when the concentration changes. The refractive index of the solution increases with increasing concentration of the solution. This is because along with the increase in concentration, more glucose is found in the sugar solution. As a result, the solution will be more concentrated because the glucose molecules that are arranged are getting denser. The above equation is used to calculate the concentration of sugar in sugar cane. It was found that brown sugar cane had a concentration of 33.38% compared to 26.34% in yellow sugarcane. While the measurement of the concentration of sugar cane in different planting areas shows almost the same results, this is because the level of accuracy of the tool is still large when compared to the difference in the concentration of the sugar solution.
Identifikasi Miskonsepsi dan Tingkat Pemahaman Mahasiswa Tadris Fisika pada Materi Listrik Dinamis Menggunakan 3-Tier Diagnostic Test Lalu A. Didik; Muh. Wahyudi; Muhammad Kafrawi
Journal of Natural Science and Integration Vol 3, No 2 (2020): JNSI
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jnsi.v3i2.9911

Abstract

This study aims to determine the misconceptions and level of understanding of physics education students on dynamic electricity. The method used is descriptive quantitative research methods. The research sample was 33 students of the tadris physics study program who are currently taking basic physics courses 2 even semester 2019/2020. Data collection used a 3-tier diagnostic test. In the concept of current and electric voltage, students who are included in the full understanding category are 26% and 29% understand partially with the low category and the level of misconception reaches 45%. In the concept of ohm law and electrical resistance, it was found that students with a full understanding level of 23% and partially understanding 14% were in the low category and the level of student misconception showed the largest percentage, namely 63% with the high category. In the concept of electrical circuits, students with a full understanding level of 29% and partially understanding 50% and included in the medium category with student misconceptions showed the smallest percentage was 21% with the low category. As a whole, it shows that the average level of students' understanding and misconceptions on dynamic electricity material is still low with a percentage of 26% and partial understanding is moderate with a percentage of 31% and a misconception of 43% with a moderate category. Keywords: Misconception, level of undertanding, 3-tier diagnostic, electricicity.ABSTRAK.Penelitian ini bertujuan untuk mengetahui miskonsepsi dan tingkat pemahaman mahasiswa tadris fisika pada materi listrik dinamis. Metode yang digunakan adalah metode penelitian deskriptif kuantitatif. Sampel penelitian adalah 33 orang mahasiswa program studi tadris fisika yang sedang menempuh mata kuliah fisika dasar 2 semester genap 2019/2020. Pengumpulan data menggunakan 3-tier diagnostic test. Pada konsep arus dan tegangan listrik, mahasiswa yang termasuk dalam kategori pemahaman penuh sebesar 26% dan paham sebagian sebesar 29% dengan kategori rendah dan tingkat miskonsepsi mencapai 45%. Pada konsep hukum ohm dan hambatan listrik didapatkan bahwa mahasiswa dengan tingkat pemahaman penuh sebesar 23% dan paham sebagian 14% dengan kategori rendah dan tingkat miskonsepsi mahasiswa menunjukkan persentase paling besar yaitu sebesar 63% dengan kategori tinggi. Pada konsep rangkaian listrik, mahasiswa dengan tingkat pemahaman penuh 29%, paham sebagian 50% dengan kategori sedang serta miskonsepsi mahasiswa menunjukkan persentase paling kecil yaitu 21% dengan kategori rendah. Secara kesuluruhan rata-rata tingkat pemahaman dan miskonsepsi mahasiswa pada materi listrik dinamis masih tergolong rendah dengan persentase sebesar 26% dan paham sebagian tergolong sedang dengan persentase 31% dan miskonsepsi sebesar 43% dengan kategori sedang.Kata kunci: miskonsepsi, tingkat pemahaman, 3-tier diagnostic, listrik dinamis
Workshop Pembuatan Media Pembelajaran Listrik Magnet dari Barang Bekas untuk Meningkatkan Kompetensi Mahasiswa Calon Guru Fisika Lalu A. Didik
Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Vol 3, No 2 (2019): Vol 3, No 2 (2019)
Publisher : Yogyakarta State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.787 KB) | DOI: 10.21831/jpmmp.v3i2.25321

Abstract

Telah dilakukan workshop pembuatan media pembelajaran berupa generator listrik dan motor listrik berbahan dasar barang bekas kepada mahasiswa calon guru fisika. Peserta pelatihan adalah mahasiswa Prodi Tadris Fisika semester V yang merupakan calon guru fisika. Metode yang dilakukan dalam penelitian meliputi sosialisasi, pelaksanaan berupa pemberian materi tentang generator dan motor listrik, pendampingan pembuatan media pembelajaran, presentasi peserta dan evaluasi. Hasil pelatihan berupa media pembelajaran fisika yaitu generator listrik sederhana dan motor listrik. Evaluasi melalui angket menunjukkan bahwa 100% peserta setuju kegiatan pengabdian ini sangat bermanfaat dan 98% pesrta setuju metode kegiatan sudah sesuai. Namun 15 %  peserta kurang setuju mengenaia manajemen waktu karena alokasi waktu yang diberikan untuk proses pembuatan media pembelajaran dirasa masih kurang
PENGEMBANGAN INSTRUMEN THREE TIER TEST DIAGNOSTIK UNTUK MENGANALISIS TINGKAT PEMAHAMAN DAN MISKONSEPSI SISWA MATERI ELASTISITAS Farizal Wahyudi; Lalu A. Didik; Bahtiar Bahtiar
Relativitas: Jurnal Riset Inovasi Pembelajaran Fisika Vol 4, No 2 (2021): Jurnal Riset Inovasi Pembelajaran Fisika
Publisher : Department of Physics Education, Faculty of Teacher Training and Education, UNIVERSITAS MA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/relativitas.v4i2.5184

Abstract

Penelitian ini mengembangkan instrumen diagnostik Thre Tier Test untuk menganalisis tingkat pemahaman dan miskonsepsi peserta didik pada materi elastisitas dan hukum hooke. Jenis penelitian adalah penelitian pengembangan (R&D). Pengembangan dilakukan dengan tahap a) studi pendahuluan, b) perancangan draft produk, c) pengembangan produk. Pada tahap pengembangan produk dilakukan revisi produk. Hasil penelitian menunjukan instrument yang dikembangkan sangat valid yang ditunjukan dengan nilai persentase kevalidan instrument Three Tier Test sebesar 88,21 % dan validasi angket respon siswa sebesar 90,83 % sehingga tergolong kategori sangat valid. Nilai kepraktisan instrumen Three Tier Test ditunjukan oleh besar nilai persentase angket respon siswa yang mencapai 87,875 dan tergolong kategori sangat praktis. Instrumen yang dikembangkan berhasil mengidentifikasi tingkat miskonsepsi siswa dengan nilai persentase sebesar 58,33 %  dan siswa paham konsep sebesar 13,33 %.
Improvement QCM Quality By Polystyrene Coating and Bovine Serum Albumin as Immobilization Agent Didik, Lalu A.; Yahdi, Yahdi; Masruroh, Masruroh
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 8 No 1 (2019): Jurnal Ilmiah pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v8i1.3716

Abstract

Polystyrene (PS) thin film with various concentration of mass (1%, 3%, and 5%) has been deposited onto Quartz Crystal Microbalance (QCM)  surface by a spin coating method. The purpose of this research is the improvement of Bovine Serum Albumin (BSA) immobilization into the QCM surface. The QCM resonance frequency has been investigated by means of Impedance Analyzer. The film thickness was calculated by the Sauerbrey equation. The surface roughness of the PS layer was observed by noncontact Topography Measuring System (TMS-1200). Calculation result using a Sauerbrey equation shows the thickness of the PS layer increases with the increasing PS concentration. The QCM/PS with 1% and 5% concentration of mass has rougher morphology and more frequency shifts caused by BSA injection compared to 3% concentration of PS.
SINTESIS DAN ANALISIS KANDUNGAN MINERAL DAN KARAKTERISTIK SIFAT LISTRIK NANOPARTIKEL PASIR BESI PANTAI TELINDUNG KABUPATEN LOMBOK TIMUR Asri, Laelatul; Didik, Lalu A.; Bahtiar, Bahtiar
JST (Jurnal Sains dan Teknologi) Vol. 10 No. 1 (2021)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.831 KB) | DOI: 10.23887/jstundiksha.v10i1.22765

Abstract

This study aims to determine the mineral content as well as the characteristics of the electrical properties of the iron sand nanoparticle samples of the Telindung beach. Synthesis of iron sand nanoparticles can be done by sharing one method, namely the coprecipitation method. In the coprecipitation process, researchers used HCl and NH4OH solutions to make a sample of nano-sized iron sand (nanoparticles) of 5 samples with different sampling distances of 3 meters, 6 meters, 9 meters, 12 meters, and 5 meters. Each finished sample is then analyzed for its mineral content using AAS. The results shows that the higher the sampling distance, the higher the mineral content, namely the total Fe in the sample of iron sand nanoparticles (8.28%, 8.79%, 8.85%, 9.07% and 9.74%). Characteristics of electrical properties namely resistivity using 4 point probes with a series of power supply devices and multimeters by making 1 sample 5 times the measurement so that the value of resistivity (8.3 x 104 ,m, 9.1 x 104 Ωm, 9.6 x 104 Ωm, 10 Ωm, 3 x 104 Ωm, 11.3 x 104 Ωm), for dielectricity using a plate parallel to the LCR meter, one sample of 10 times the measurement so as to obtain the value of the dielectric constant (6.4 x 104 F, 7.9 x 104 F, 9 , 8 x 104 F, 11.6 x 104 F and 13.1 x 104). So it can be said that the higher the value of minerl candlengan that is the total Fe, the higher the value of the characteristic electrical properties are resistivity and dielectricity.
ANALISA EFEK JAHN TELLER TERHADAP STRUKTUR KRISTAL SENYAWA DELAFOSSITE AGCR1-XNIXO2 (0,01 ≤ X ≤ 0,04) Didik, Lalu A.
Indonesian Physical Review Vol. 2 No. 2 (2019)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (517.788 KB) | DOI: 10.29303/ipr.v2i2.22

Abstract

Telah dilakukan visualisasi struktur kristal senyawa delafossite AgCrO2 yang didoping doping ion Ni2+  menggunakan software Crystal MakerX 10.4. Input Data dengan Grup Ruang Nomor 166 dan Tabel Wick Offnya diperoleh dari American Mineralogist Crystal Structure Database (AMCSD). Berdasarkan hasil visualisasi tampak bahwa terjadi peningkatan nilai parameter kisi pada arah sumbu z (parameter kisi c) dan volume sel kristal. Fenomena ini dapat dijelaskan menggunakan efek Jahn – Teller. Jika kita meninjau menurut konfigurasi energinya, ion Cr3+ memiliki konfigurasi (t2g)3(eg)0 yang mana orbital t2g , 3 elektron 3d yang boleh mengisi orbital dxy sedangkan ion Ni2+ memiliki konfigurasi (t2g)6(eg)2 yang mana orbital eg boleh diisi oleh 2 elektron 3d yang menempati dz2.. Misalkan ion Cr3+ yang digantikan terletak pada orbita dxy digantikan oleh ion Ni2+ yang memiliki orbital dz2 sehingga 6 atom oksigen pada bagian oktahedral CrO6 akan bergerak menjauhi ion Cr3+ sehingga 2 atom oksigen pada dumbell Ag - O sepanjang sumbu z juga akan ikut berpindah. Akibatnya terjadi distorsi secara spontan sepanjang sumbu x, y, dan z menyebabkan terjadinya peningkatan parameter kisi. Adanya distorsi ini mengakibatkan hilangnya degenerasi sehingga senyawa lebih stabil.
CRYSTAL STRUCTURE ANALYSIS OF CuCrO2 BASED ON XRD DATA USING GSAS SOFTWARE Didik, Lalu A.; Wahyudi, Muh.
Indonesian Physical Review Vol. 4 No. 1 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v4i1.73

Abstract

The synthesis of CuCrO2 crystals by mixing CuO and Cr2O3 has been carried out using the solid reaction method at a temperature of 1200 0C. The characterization of the structure used XRD and analyzed using GSAS software. The results of characterization using XRD showed that no other phase occurred. This is evidenced by the absence of other phases from the results of refinement of measurement data with reference data and a value of χ 2 which is 1.222. The lattice parameter values resulting from the refinement of the CuCrO2 X-ray diffraction pattern are a = b = 2.9715 Å and c = 17.1104 Å with a cell volume of 130.584 Å 3. In addition to the lattice parameter values, the distance between atoms was also obtained, both Cu - O, Cr - Cr, and Cr - O.
Co-Authors Ahmad Zohdi Alwan Mahsul Asri, Laelatul Aulia, Fitratul Bahtiar Bahtiar Bahtiar, Bahtiar Baiq Nora Kusumawardani Djoko H Santjojo Eka Rahmawati Fadli Robiandi Farizal Wahyudi Fatimatuzzahra, Fatimatuzzahra Fitrah Ningsih Fitratul Aulia Fitrianingsih Fitrianingsih Hadi Kusuma Ningrat Hidayati, Nur Shofia Husnul Aini Irfan Safarwadi Masruroh Masruroh Masruroh Masruroh Masruroh MASRUROH Muh. Wahyudi Muhammad Kafrawi Muslimah Muslimah Nur'aini, Nur'aini Nuraini Saprianti Nurhidayati Nurhidayati Rianita Bela Islami Rosi Yulistia Wati Setyawan P Sakti Susi Rahayu Wahyudi, Farizal Wahyudi, Muh. Yahdi Yahdi, Yahdi Yahdi, Yahdi Yanita Syafitri