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JPSE (Journal of Physical Science and Engineering)
JPSE (Journal of Physical Science and Engineering) is published twice a year in April and October by Physics Department of Universitas Negeri Malang, Indonesia. e-ISSN: 2541-2485 The journal is devoted to publishing original, frontier and important of various branches of Physics Science and Engineering. Editors welcome scholars, researchers and practitioners of Physics around the world to submit scholarly articles to be published through this journal (free of charge).
Articles
21
Articles
Uji Kekerasan Functionally Graded Materials Berbasis Aluminium Titanat dengan Penstabil MgO

Fauzi, Ah Sulhan, Istiqlaliyah, Hesti, Pratapa, Suminar

JPSE (Journal of Physical Science and Engineering) Vol 3, No 1 (2018): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Penelitian ini dilakukan untuk mengetahui karakteristik kekerasan functionally graded materials berbasis aluminium titanat yang distabilisasi magnesium oksida (FGMs-ATM) yang telah dibuat dengan metode infiltrasi berulang. Uji kekerasan dilakukan pada arah uniaksial untuk membandingkan nilai kekerasan sampel dengan variasi beban 0,2 sampai 1 Newton. Untuk membentuk FGMs-ATM, sampel disinter pada temperatur 1550 °C, sebagai pembanding adalah FGMs-ATM yang disinter pada temperatur 1450 °C. Hasil analisis sifat kekerasan dengan uji Vickers Hardness menunjukkan nilai kekerasan FGMs-ATM yang fluktuatif terhadap variasi beban antara 0,2 N sampai dengan 1 N, yaitu 64,55 HV pada pembebanan terendah 0,5 N dan tertinggi 118,6 HV pada pembebanan tertinggi 1 N. Fluktuasi nilai kekerasan terhadap variasi beban yang diberikan menunjukkan sampel FGMs-ATM mendekati sifat getas/ rapuh (brittle). Sedangkan peningkatan temperatur sinter semakin menurunkan sifat getasnya.

Integrasi Pengembangan Techno Park dan Mitigasi Bencana Daerah Volcano Hosted Geothermal Cangar, Arjuno-Welirang Berbasis Metode Seismik

Maryanto, Sukir

JPSE (Journal of Physical Science and Engineering) Vol 3, No 1 (2018): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Telah dilakukan integrasi konsep pengembangan Techno Park dan Mitigasi Bencana pada kawasan Volcano Hosted Geothermal dengan berdasar pada metode seismik. Pada tahap awal dilakukan survey mikroseismik dengan analisis pergerakan partikel. Tujuannya untuk mengetahui sebaran episenter dan hiposenter gempa bumi mikro yang berubah secara spatio- temporal dan sebaran nilai Peak Ground Acceleration (PGA) yang dihitung menggunakan metode Kanai. Akuisisi data dilakukan di dua lokasi (Tretes dan Cangar) tempat pengembangan Techno Park dan observatorium Gunungapi dan Geothermal menggunakan seismograf TDL-303S dan juga dikembangkan homemade seismometer berbasis MEMS. Hasil penelitian didapatkan rentang frekuensi gempa bumi mikro berkisar 12-24 Hz. Terdiri atas 34 event tersebar di sekitar Daerah Cangar dengan rentang kedalaman 4-262 meter, serta 6 event di sekitar Kawah Welirang dengan rentang kedalaman 985-2152 meter. Sumber event di sekitar kawah diduga sebagai akibat aktivitas vulkanik Kawah Welirang. Nilai Sebaran nilai PGA di Daerah Cangar berkisar 11,23 gal hingga 21,8 gal. Sedangkan, di Daerah Tretes berkisar 5,93 gal hingga 18,87 gal. Rentang nilai tersebut menunjukkan tingkat risiko akibat gempa tektonik pada daerah penelitian termasuk kategori aman, sehingga layak untuk pengembangan daerah monitoring erupsi gunungapi Arjuno Welirang

Sintesis, Karakterisasi Struktur dan Sifat Optik Nanopartikel Hidroksiapatit/Magnetit

Hariyanto, Yuanita Amalia, Taufiq, Ahmad, Sunaryono, Sunaryono

JPSE (Journal of Physical Science and Engineering) Vol 3, No 1 (2018): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Hydroxyapatite becomes one of the promising biomaterials to be applied in medical fields due to its special performances such as biocompatible and non-toxic. So that it to improve performance of hydroxyapatite, it is necessary to develop the hydroxyapatite by compositing with magnetite. In this work, the hydroxyapatite/magnetite was synthesized using precipitated method and characterized using XRD, FTIR, SEM-EDAX, and UV-Vis spectrometer for investigating the detailed structure, functional group, morphology, and band gap energy of the prepared sample. The results show that the sample has two phases with high purity i.e. hydroxyapatite and magnetite without any impurities. The data analysis using the Scherrer’s equation shows that the hydroxyapatite/magnetite has particle size about 10 nm. Meanwhile, the data analysis using FTIR indicates the presence of atomic bond from both of hydroxyapatite and magnetite. Morphologically, it is seen that the sample has an agglomeration in the nanometric size. Interestingly, the hydroxyapatite/magnetite has a band gap energy of about 3.8 eV which is in the range of the band gap energy of hydroxyapatite and magnetite.

Sintesis Kromium Ferit Dari Pasir Pantai dan Karakterisasi Awal Sensor Suhu

Elyani, Widya, Hidayat, Arif, Taufiq, Ahmad, Sunaryono, Sunaryono

JPSE (Journal of Physical Science and Engineering) Vol 3, No 1 (2018): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Ferrofluids for temperature sensor application become one of the important modern technology applications. Therefore, the development of the beach sand-based ferrofluids for temperature sensor becomes new and essential things for cutting off their production. In this research, the preliminary investigation of the temperature sensor is developed based on the chromium ferrite ferrofluids. The sample in powder and fluid were prepared by coprecipitation-sonochemical technique.   The powder sample which was characterized by XRD has the crystallite size of 10 nm with high purity. The preliminary investigation shows that the chromium ferrite ferrofluid has a good property as a candidate for temperature sensor application showing a good response on the temperature treatment

Investigasi Struktur dan Energi Band Gap Partikel Nano Tio2 Hasil Sintesis Menggunakan Metode Sol-Gel

Listanti, Anita, Taufiq, Ahmad, Hidayat, Arif, Sunaryono, Sunaryono

JPSE (Journal of Physical Science and Engineering) Vol 3, No 1 (2018): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

TiO2 is a semiconductor material that widely applied in various fields due to its superiority both in terms of physical and chemical properties. In this study, the TiO2 nanoparticles was synthesized using sol-gel method. The synthesis of TiO2 nanoparticles was started by reacted TiCl3 with aquades and titrated with ammonium hydroxide and then followed by calcination process at 600 0C for 1.5 hours. The structural characteristics were investigated using XRD. The fungsional groups of the TiO2 nanoparticles were characterized by FTIR. The optical properties of the TiO2 nanoparticles were determined using UV-Vis spectrometer. The morphology of the sample was characterized using SEM. The results show that the TiO2 has structure as anatase phase. The data analysis using the Scherrer’s equation show that the particle crystallite size of is about of 9.77 nm. The energy band gap value of the TiO2 is 3.28 eV. Based on the SEM image, the agglomeration of the sample was formed with the average diameter of particle size of TiO2 is about 92 nm.

Proses Adiabatis dan Isovolume Kuantum Sistem Dua Partikel Simetri

Akbar, Muhammad Syawaluddin, Latifah, Eny, Qomariyah, Siti Nur, Setyo, Deny Pra, Wisodo, Hari, Hidayat, Arif

JPSE (Journal of Physical Science and Engineering) Vol 2, No 2 (2017): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Sebagai piranti pengkonversi energi panas menjadi usaha, mesin panas harus memasuki era miniaturisasi lebih atas piranti yang deskripsi teoritiknya hanya dapat dilakukan dengan mekanika kuantum. Dengan demikian perlu dikonstruksi formulasi yang dapat mengendalikan sistem kuantum untuk menjalani proses termodinamis penyusun sistem mesin panas. Telah dilakukan rekonstruksi proses adiabatis dan isovolume sistem piston 1D dengan zat kerja 2 partikel kuantum yang simetri. Metode yang digunakan adalah model analogi dengan sistem termodinamika sebagai domain analogi dan sistem mekanika kuantum sebagai domain target. Pemodelan analogi meliputi analogi sistem dari piston menjadi kotak 1D dan analogi proses yang mengimplementasikan hukum pertama termodinamika untuk sistem kuantum. Hasil yang diperoleh adalah formulasi dan konfigurasi keadaan sistem, representasi energi selama proses isovolume dan adiabatik dan persamaan keadaan yang setara dengan persaman gas ideal. Dengan dihasilkannya mekanisme proses adiabatic dan isovolume sistem kuantum, akan dapat dibangun suatu proses siklus mesin Otto kuantum sistem 2 partikel simetri dan deskripsi efisiensinya.

Sensor Ketinggian Air Menggunakan Concentric Bundle Probe

Samian, S, Zaidan, A H

JPSE (Journal of Physical Science and Engineering) Vol 2, No 2 (2017): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Concentric bundle probe dapat dimanfaatkan untuk mendeteksi ketinggian air dengan berbasis pada sensor pergeseran. Mekanisme kerja sensor adalah mendeteksi pergeseran reflektor yang merekat pada membran akibat perubahan ketinggian zat cair. Pergeseran reflektor terdeteksi melalui perubahan intensitas cahaya pantulan dari reflektor yang masuk fiber optik penerima yang mengelilingi fiber optik pemancar cahaya. Penggunaan satu lapis membran dari bahan nitrile polymer dengan tebal 0,08 mm menghasilkan daerah kerja sensor sebesar 100 cm dengan resolusi sebesar 0,9 cm.DOI: https://doi.org/10.17977/um024v2i22017p048 

Identifikasi Sistem Panas Bumi Daerah Cangar, Jawa Timur menggunakan Metode Magnetotelurik

Rahmawati, Rahmawati, Maryanto, Sukir, Susilo, Adi

JPSE (Journal of Physical Science and Engineering) Vol 2, No 2 (2017): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

The research has been done in Cangar area of complex Mt.Arjuno-Welirang, East Java.  This research using magnetotelluric method. The purpose of this research is to identify the geothermal system of research area based on its resistivity value. Acquisition of magnetotelluric data done in 11 point with spaces 70 meters up to 150 meters. Magnetotelluric measurement points is divided into 5 profile. Based on the result of data processing given range resisitivity value in research area between 4 W.m up to 2000 W.m.  The result of modeling geothermal system in Cangar indicated of caprock (≤21 W.m), reservoir (21 W.m – 167 W.m) and a heat source (≥167 W.m). Geothermal Cangar is controlled by Cangar fault.

Pembuatan DSSC dengan fotoanoda dari TiO2 dan β-karoten sebagai sensitizer dan Analisis kurva I-V

Suprayogi, Thathit, Maftuha, Dina, Diantoro, Markus

JPSE (Journal of Physical Science and Engineering) Vol 2, No 2 (2017): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Sel surya berbasis DSSC memiliki peluang untuk dikembangkan karena proses fabrikasinya yang sederhana, biaya murah, serta berbahan dasar organik. Pembuatan DSSC dengan memanfaatkan pigmen tumbuhan murni seperti β-karoten dan menggukanan TiO2 sebagai fotoanoda. Karaterisasi DSSC dilakukan melalui pengukuran I-V dibawah pencahayaan 1000 W/m2, dengan analisis dilakukan melalui fitting nonlinier dari persamaan Shockley untuk mendapatkan seluruh parameter sel surya seperti n, Rs, Rsh, Io, Iscdan Voc.

Pengukuran Sampel Magnetik Cair dengan Vibrating Sample Magnetometer (Vsm)

Lubis, W Z, Mujamilah, M

JPSE (Journal of Physical Science and Engineering) Vol 2, No 2 (2017): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

This article discusses the performance of Vibrating Sample Magnetometer (VSM) Oxford 1.2 H in characterizing the magnetic samples in liquid form. Samples of water-based ferrofluid placed in a capillary tube pipe. Measurement of samples with varied position, volume and concentration as well as repeated measurements are carried out to evaluate the performance. From these series of measurements, it brings that optimal volume range with measurement results that can still be accounted for is 10 µl, with samples being in equilibrium position within the pick-up coil. The smallest sample concentration which still can be observed quantitatively is 0.332 mg/mL. Repeatability test gives the value of the magnetic moment deviation of ~ 4%. The accuracy of the sample preparation and positioning of the samples is analyzed being a major factor which causes this measurement error. In general it can be concluded that the liquid sample measurement will give better results when using reverse pipetting mode when putting the liquid samples within capillary tube using a micropipette. The measurement should be done as soon as possible after preparation.DOI: https://doi.org/10.17977/um024v2i22017p039