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Preliminary Study on Nickel Nanoparticle growth by Sputtering Method Lubis, Patricia; Latununuwe, Altje; Winata, Toto
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 14
Publisher : Jurnal Dosen Universitas PGRI Palembang

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AbstractNickel nanopartickel has been grown on Si (100) substrate by the sputtering method. The growth parameters were 4 x 10-1 Torr pressure, 1500C temperature, 77,3 sccm Argon gas flow and 90, 30,10, 5, 1 minutes deposition time. The as deposited nickel nanoparticles were annealed for 30 minutes and 4 hours. The Nickel nanoparticles were then characterized using Scanning Electron Microscopy (SEM) and Energy Dispersive Analysis X-Ray (EDAX). The smallest size of Nickel nanoparticles found is about 50 nm.Keywords: nanoparticle, sputtering, anneal.

Characterization Ni Nanocatalyst on Si (100) Substrate By Sputtering Growth Methods Lubis, Patricia; Latununuwe, Altje; Winata, Toto
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 14
Publisher : Jurnal Dosen Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (894.894 KB)

AbstractCharacterization Ni metal nanocatalyst had been analyzed on Si (100) substrate with Sputtering Growth Methods. The sputtering conditions used were 4x10-1 torr in pressure; 1500C in temperature; 77.3 sccm in Ar gas flow; and 90,30,20 minutes in time depositions. After growth deposition, metal nanocatalysts were annealed in temperature 6000C for 30 minutes. Characterizations of Ni metal nanocatalysts were used Scanning Electron Microscopy (SEM) and Energy Dispersive Analysis X-Ray (EDAX) and we found the tendency of smallest structure with decrease of time deposition.Keywords: nanocatalyst, sputtering, anneal.

Preliminary Study on Nickel Nanoparticle growth by Sputtering Method Patricia Lubis; Altje Latununuwe; Toto Winata
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 14
Publisher : Jurnal Dosen Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar

AbstractNickel nanopartickel has been grown on Si (100) substrate by the sputtering method. The growth parameters were 4 x 10-1 Torr pressure, 1500C temperature, 77,3 sccm Argon gas flow and 90, 30,10, 5, 1 minutes deposition time. The as deposited nickel nanoparticles were annealed for 30 minutes and 4 hours. The Nickel nanoparticles were then characterized using Scanning Electron Microscopy (SEM) and Energy Dispersive Analysis X-Ray (EDAX). The smallest size of Nickel nanoparticles found is about 50 nm.Keywords: nanoparticle, sputtering, anneal.

Characterization Ni Nanocatalyst on Si (100) Substrate By Sputtering Growth Methods Patricia Lubis; Altje Latununuwe; Toto Winata
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 14
Publisher : Jurnal Dosen Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar

AbstractCharacterization Ni metal nanocatalyst had been analyzed on Si (100) substrate with Sputtering Growth Methods. The sputtering conditions used were 4x10-1 torr in pressure; 1500C in temperature; 77.3 sccm in Ar gas flow; and 90,30,20 minutes in time depositions. After growth deposition, metal nanocatalysts were annealed in temperature 6000C for 30 minutes. Characterizations of Ni metal nanocatalysts were used Scanning Electron Microscopy (SEM) and Energy Dispersive Analysis X-Ray (EDAX) and we found the tendency of smallest structure with decrease of time deposition.Keywords: nanocatalyst, sputtering, anneal.

DEVELOPMENT OF INTEGRATED SCIENCE LEARNING DEVICES USING PROBLEM BASED LEARNING (PBL) LEARNING MODEL THROUGH LESSON STUDY Sarlota Singerin; Estevanus K Huliselan; Altje Latununuwe
EDU SCIENCES JOURNAL Vol 1 No 2 (2020): Edu Sciences Journal
Publisher : Faculty of Teacher Training and Educational Sciences, Pattimura University Indonesia

The study was conducted at SMP Negeri 2 Salahutu. The purpose of this study is to develop a science learning tool using the Problem Based Learning learning model, through lesson study. The research design uses the 4 D Research and Development research method (Define Phase, design, develop, Disseminate). The application of products in the form of PBL-based integrated science-oriented learning modules through LS results in the following findings: 1). The Global warming theme module is based on curriculum analysis, student and teacher needs and field observations; 2). The Global warming theme module is able to get students actively involved in the learning process. 3). PBL-based Global warming theme modules through Lesson Study train students' creativity; 4). The teacher's knowledge about the systematic writing of the modules is still lacking so that the writer at the time of dissemination gave a presentation on the systematic module. The results of this study found that 1). Development of Integrated Science Learning Using Models of Problem Based Learning through Lesson Study can improve the student learning outcomes; 2). Development of Integrated Science Learning based on Problem Base Learning through Lesson study using the Global warming theme module is based on curriculum analysis, student and teacher needs and field observations. This module is able to make students actively involved directly in the learning process and train students' creativity

Edukasi Pengenalan Alat Ukur Dasar Fisika di SMP Laboratorium Universitas Pattimura Silahooy, Stevi; Huliselan, Estevanus Kristian; Latununuwe, Altje; Nggolaon, Delpina; Akyuwen, Frandy; Ririhena, Yohana
Reswara: Jurnal Pengabdian Kepada Masyarakat Vol 6, No 1 (2025)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v6i1.5214

Minimnya kegiatan sosialisasi mengenai konsep dasar materi pelajaran di SMP Laboratorium UNPATTI mengakibatkan ketidakpahaman dan berkurangnya partisipasi aktif dari siswa dalam proses pembelajaran khususnya fisika. Hal ini tercermin dalam rendahnya rata-rata tingkat respon siswa pada hasil pre-test, yang menunjukkan kurangnya keterlibatan aktif dan pemahaman siswa dalam proses pembelajaran. Sebagai upaya untuk meningkatkan pemahaman dan minat siswa, kegiatan pengabdian ini difokuskan pada pengenalan alat ukur dasar fisika dan penerapannya dalam kehidupan sehari-hari. Kegiatan ini diikuti oleh 34 siswa kelas 7 SMP Laboratorium UNPATTI, yang dilaksanakan dengan menggunakan metode CPDL (ceramah plus demonstrasi dan latihan). Selama kegiatan, siswa diajak untuk memahami konsep dasar alat ukur fisika dengan cara yang lebih praktis dan menarik, yang bertujuan untuk menumbuhkan pemahaman langsung dan relevansi materi pelajaran dengan kehidupan mereka. Evaluasi hasil kegiatan menunjukkan adanya peningkatan signifikan dalam respon dan minat siswa terhadap pembelajaran fisika, yang menunjukkan keberhasilan metode yang diterapkan dalam meningkatkan partisipasi aktif siswa dalam proses belajar

Optimizing 21st Century Skills Through Island-based Physics Multirepresentation Learning at Madrasah Aliyah Negeri 1 Maluku Tengah School Jamaludin, Jamaludin; Latununuwe, Altje; Rachman, Gazali; Dulhasyim, Ashari Bayu P.
Unram Journal of Community Service Vol. 6 No. 1 (2025): March
Publisher : Pascasarjana Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ujcs.v6i1.751

In the current era of globalization, prioritizing four basic skills such as critical thinking, collaboration, communication, and creativity, is needed to prepare students to live in the future. This community service activity aims to optimize these skills through the application of ocean-island-based physics multirepresentation learning, which is relevant to the living environment of students in Central Maluku. The multirepresentation approach helps students understand abstract physics concepts through various forms of representation, such as visual, mathematical, and verbal, which encourages deeper understanding. The context of the sea-island environment, such as currents, waves, and hydrostatic pressure, is used as physics teaching material to increase the relevance and motivation of student learning, as students can see how physics concepts are integrated in their daily lives. The service method used includes observation, teacher training, and implementation of contextual learning based on sea-islands. The results showed that teachers who participated in the training were able to design and implement contextualized multirepresentation physics learning, which is relevant to the local sea-island environment. Students also responded positively and showed improvement in 4C skills through the island sea-based learning process and this learning is expected to continue to evolve and be applied in various learning contexts to advance 21st century skills among students

PELATIHAN PENYUSUNAN ASESMEN ALTERNATIF DALAM KURIKULUM MERDEKA BAGI GURU SMA/SMK/MA DI KECAMATAN LEIHITU MALUKU TENGAH Tamaela, Elsina S; Latununuwe, Altje; Huliselan, Estevanus K; Nirahua, Juliana; Limba, Anatasija; Latupeirissa, Asry N; Barus, Carolina S A; Singerin, Sarlota; Sapulete, Heppy; Malawau, Seska; Lesiela, Yulia; Mahu, Sri Jumiati
PAKEM : Jurnal Pengabdian Kepada Masyarakat Vol 5 No 1 (2025): Pakem : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/pakem.5.1.8-17

Assessment plays an essential role in decision-making related to student success, especially in the Independent Curriculum, which encourages a holistic assessment approach. This Community Service Program (PKM) aims to improve the skills of SMA/SMK/MA teachers in Leihitu District in compiling alternative assessments that are able to evaluate various aspects of student competency. This PKM was carried out for two days with training and mentoring methods. The activities were divided into two parts, namely two-day training and the second part was mentoring in compiling assessments. The results of this training showed an increase in teachers' ability to compile alternative assessments from the sufficient category to the good category. This finding confirms that the PKM activity has succeeded in improving teachers' ability to compile alternative assessments in the implementation of the Independent Curriculum. These results show the importance of ongoing training for teachers to support the implementation of more effective assessments in accordance with the Independent Curriculum, which ultimately strengthens the quality of decisions related to student learning development.

Green Sintesis Dan Karakterisasi Material Nanokomposit TiO2/CuO Menggunakan Ekstrak Daun Wedelia trilobata (L.) Sarimanella, Stefhanie B.; Titahena, Apriliska; Latununuwe, Altje; Huliselan, Estevanus Kristian
Physikos: Journal of Physics and Physics Education Vol 1 No 1 (2022): Physikos: Journal of Physics and Physics Education
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.1.1.5933

TiO2/CuO nanocomposite has been successfully synthesized using Wedelia trilobata (L.) leaf extract with TiCl3 and Cu(NO3)2 3H2O as precursors. The material formed was then characterized by scanning electron microscopy (SEM) to determine the shape and size and then energy dispersive X-ray (EDX) characterization to determine the atomic composition contained in this nanocomposite material. The results of SEM and EDX show that the material is spherical in shape and has an average size of 42 nm. The composition of TiO2 is 73.38% and CuO is 4.32%. Furthermore, the sample is characterized by X-ray diffraction (XRD) in which the diffraction peaks are at angles of 2 theta, 25.646° and 47.511° indicating TiO2 nanoparticle. Meanwhile, peaks are at 38.367° and 74.379° indicate CuO nanoparticle. Determination of the energy band gap of the material using the results of ultraviolet visible (UV-Vis) is 3.5 eV. Measurement of magnetic properties using VSM equipment. Based on the hysteresis curve, the TiO2/CuO nanocomposite material has diamagnetic properties and is a soft magnet material.

Penggunaan Metode Inkuiri Terbimbing Dalam Pengembangan LKS Fisika SMP Kelas VIII Pada Materi Getaran Dan Gelombang Katayane, Tetrin; Malawau, Seska; Latununuwe, Altje; Sabandar, Vederico Pitsalitz
Physikos: Journal of Physics and Physics Education Vol 1 No 2 (2022): Physikos: Journal of Physics and Physics Education
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/physikos.1.2.8421

The research aimed to produce a physics student worksheet (LKS) on vibrations and waves using guided inquiry-based methods. The research conducted refers to the modification of the LKS development model using the 4-D model. Respondents as test subjects in this study consisted of 9 students in class VIII1 on a small scale and 22 students in class VIII3 on a large scale. Based on the results of the research conducted, the eligibility validation results for the LKS were classified as very feasible with an average score of 3.7%, and could be used as a study guide. Meanwhile, the results of the analysis of the legibility of worksheets, both on small-scale and large-scale trials, were classified as high criteria or easily understood by students with an average percentage of acquisition scores on a small scale of 63% and a large scale of 67%. Furthermore, the results of the analysis of student responses to the development of LKS used during the learning process both on a small scale and on a large scale are in very good qualifications with an average acquisition score on a small scale of 92.45% and a large scale of 94.61%. The results of this study indicate that the development of worksheets based on the guided inquiry learning model can make students more active in obtaining information to solve problems given by the teacher so that vibration and wave material can be understood properly.

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