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All Journal JOURNAL OF COASTAL DEVELOPMENT ILMU KELAUTAN: Indonesian Journal of Marine Sciences Reaktor BERKALA FISIKA SAINS DAN MATEMATIKA JURNAL SISTEM INFORMASI BISNIS Jurnal Materi dan Pembelajaran Fisika Jurnal Kedokteran Brawijaya Ganendra: Majalah IPTEK Nuklir Jurnal Sains Materi Indonesia Chem Info YOUNGSTER PHYSICS JOURNAL The Journal of Experimental Life Sciences (JELS) Manajemen Sumber Daya Manusia Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JURNAL FISIKA Jurnal Matematika & Sains Jurnal Promkes: The Indonesian Journal of Health Promotion and Health Education Journal of Natural Sciences and Mathematics Research ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika The Indonesian Journal of Occupational Safety and Health Edumatsains Proceeding of the Electrical Engineering Computer Science and Informatics JITEK (Jurnal Ilmiah Teknosains) Majalah Kesehatan FKUB Communications in Science and Technology Journal of Physics and Its Applications DE'RECHTSSTAAT Jurnal Fisika Indonesia CRJIM (Clinical and Research Journal in Internal Medicine) Bulletin of Community Engagement Jurnal Patria Bahari JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Progressive Physics Journal Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi Gunung Djati Conference Series LOGIC : Jurnal Ilmu Komputer dan Pendidikan Journal of Agrosociology and Sustainability Indonesian Journal of Biomedicine and Clinical Sciences Deka in Medicine Multidisciplinary Innovations and Research in Applied Engineering Folia Medica Indonesiana
Heri Sutanto
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
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Journal : BERKALA FISIKA

 1   2 
Pengaruh Laju Molar Mn Larutan Terhadap Mikrostruktur Lapisan Tipis GaN:Mn yang Dideposisi di atas Substrat Si Menggunakan Metode Sol-Gel Sutanto, Heri; Hidayanto, Eko; Nurhasanah, Iis; Istadi, Istadi
BERKALA FISIKA Vol 14, No 2 (2011): Berkala Fisika
Publisher : BERKALA FISIKA

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A thin layer of material deposition of GaN: Mn by sol-gel method has done using spin-coating technique. Solution of gallium-citrate-amine maganese-Ga2O3 synthesized using as a source of Ga and Mn MnO2 as the source. Solution varied with the mole fraction solution of 60-80% Mn. Brown crystals that formed subsequently dissolved in ethylenediamine to form a gel. Subsequent gel superimposed on top of Si substrates with a spin-coater at a rate of 1100 rpm. Layers formed at temperatures of 900oC and then disintering in UHP N 2 gas environment to form the decomposition of GaN: Mn. The results of spectral analysis of energy dispersive X-ray (EDX) showed incorporation of Mn into the GaN mole fraction increased with the addition of a solution of Mn in the solution used. EDX Test results show that thin films of GaN: Mn impurity contained carbon (C) up to 36.71%. Image scanning electron microscopy (SEM) a thin layer of GaN: Mn shows in general have been obtained surface roughness (rms) morphology of the layer reaches the order of nanometers up to 24.36 nm. From the results already obtained show that the sol-gel deposition method has been able to produce a thin layer of magnetic semiconductors with a nearly homogeneous surface morphology. Thus the sol-gel method could be developed for alternative methods of deposition of thin layers that are economical and simple. Key words: GaN: Mn, CSD, Thin Layer, Mn incorporation.
Mikrostruktur Semikonduktor GaN di Atas Substrat Silikon Dengan Metode Sol-Gel Sutanto, Heri; Nurhasanah, Iis; Istadi, Istadi; Maryanto, Maryanto; Ambikawati, Wahyu; Marlini, Nofi
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Gallium nitride (GaN) semiconductor thin films have been successfully deposited on Si substrate (004) by sol-gel method. Gel prepared from the crystal gallium-citrate-amines. These crystals formed from a solution containing the ions Ga+3 and citric acid (CA). Gel in place on the substrate and then rotated with a speed of 1100 rpm. The gel layers are obtained and then placed on the programmable furnace. Deposition temperature varied of 800, 900 and 1000oC in a nitrogen gas environment during 2 hour. The crystal quality of GaN thin films have characterized by XRD measurement. The surface morphology and cross section of the films observed by SEM. The film compositions determined by EDX characterization. The results showed that all the GaN thin films on silicon substrate have oriented polycrystalline structure. The crystal quality of GaN film is formed is influenced by the deposition temperature. In a deposition temperature range is used, increasing the deposition temperature can improve the crystal quality of GaN films.   Keywords: GaN Thin Films; Spin-Coating Technique; Silicon Substrate
Rancang Bangun Deteksi Alkohol Pada Urine Dengan Sensor TGS 2620 Berbasis Mikrokontroler AT89S51 Sutanto, Heri; Haryowati, Anggraeni Dwi; Arifin, Zainal
BERKALA FISIKA Vol 13, No 3 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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The design of alcohol detection in urine using sensors TGS 2620 microcontroller AT89S51 has been done. This device is made with a system that is simple and affordable prices so that it can be used for police and medical laboratories. Alcohol detection in urine is done by using sensors TGS 2620, ADC and the microcontroller. Measured values of the sensor are converted by the ADC and then processed microcontroller to be processed and sent to a computer with RS 232 modules. From the results of engineering manufacture alcohol detection devices in urine obtained test results showing that an increase in the value of sensor output voltage (VRL) at the time the sensor detects the presence of alcohol and research results of alcohol in urine is shown with captions positive or negative urine samples and the percentage content of alcohol .   Keywords: Alcohol, Urine, Sensors TGS 2620, Microcontroller AT89S51.
PEMBUATAN DAN PENGUJIAN PROTOTIPE DESALINASI BERTENAGA SURYA YANG DIKOMBINASIKAN DENGAN LAMPU ULTRAVIOLET DAN SISTEM OTOMATIS BERBASIS MIKROKONTROLER Rosyad, Muhammad Sabilul; Marhaendrajaya, Indras; Sutanto, Heri
BERKALA FISIKA Vol 27, No 1 (2024): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

The lack of availability of clean water quantitatively is due to 97% of the water on earth is sea water, with a salt content of seawater of around 35000 mg/L causing the water to be unable to be used directly without prior treatment. One of the efforts that can be done to overcome the clean water crisis is through seawater desalination to produce water with low salinity. Several desalination methods that have existed are MSF (Multi Stage Flash Distillation) and Reverse Osmosis. But both of these methods have a high cost. Therefore, we need a method that is cheaper and easier to implement such as distillation. In this research, seawater desalination process uses the distillation method combined with a vacuum pump, electric stove and ultraviolet lamp. The use of a vacuum pump in the distillation system can speed up the evaporation process of seawater. Ultraviolet lamps function to degrade heavy metal pollutants and remove harmful bacteria. To maximize the performance of the tool, an electric stove with an automation system is added with solar panels as its energy source. Analysis of the tests carried out included the construction of the prototype, characterization and calibration of the LDR (Light Dependent Resistor) sensor and Arduino UNO microcontroller, total energy production and use, water production speed, and water quality. The results obtained include a prototype of seawater desalination. The characterization and calibration of the sensor in the automated system that the LDR sensor is running accurately, together with the Arduino UNO microcontroller, the LDR sensor can be an automation system that can make the prototype turn on and off automatically. The use of ultraviolet lamps shows that ultraviolet lamps have a photon energy of 3.0 eV and are able to work in visible light. The use of solar panels as an energy source can make an energy efficient prototype. This tool technology can increase water productivity up to 2 times and water quality shows a decrease in several pollutant parameters in distilled water including TDS (Total Dissolve Solid) of 99.7%, electrical conductivity of 99.987%, salinity of 99.93% , total coliform was 100%, and heavy metals Pb was 82.47%, Cd was 60.33%, Cu was 100%, Fe was 96.1%, Cr was 90.33%, and Zn was 98.9% , and the pH of seawater became neutral from 7.5 to 6.9. This prototype technology has the potential to be applied to the community.
Co-Authors . Istadi A Asriyanto A. Suhandi Abellia, Gaby Adam Sumboko Adi Pamungkas Adrian, Muhammad Agus Romadhon Agus Subagio Agus Subagio Agus Subagiyo Agustya Tri Surono Ahmad Pradana Ali Roo'in Mas'uul Alkian, Ilham Amalia, Dinda Andri Yanyah Anggraeni Dwi Haryowati Annisa Vidia Fajarini Ansory Khaerul Apriliyanda Nur Adha Ari Wibawa Budi Santosa Aries Subiantoro Aripin, Muhamat Aris Puji Widodo Arisa Dwi Sakti Aristi Dian Purnama Fitri Aristi Dian Purnama Putri Asriyanto Asriyanto Astri Suppa Supratman Aulia Narindra Mukhtar Ayu Adriyuni Lestari Babay Suhaemi, Babay Basuki Budi Raharjo Bayu Persawan Benyamin Kusumoputro Budi Mulyanti Budiman, Rizki C. I. Sutrisno Catur Rakhmad , Handoko Choirul Anam Choirul Anam AM Diponegoro Dadang Suprijatna Darwin Ismail Desy Armalina Dewi Indiastari Dewi Widyaningsih Didi Candradikusuma Dilla Sistesya Dita Kesumayadi Donni Damara Dwi Adhianto Dwi Antoro, Dwi Dwitarahma, Marshandyar Edi Supriyanto Edwin Zusagka Edy Supriyanto Eko Hidayanto Eko Hidayanto Eko Hidayanto Eko Hidayanto Ery Budiman Fachriza Noor Abdi Fachriza Noor Abdi Fandi Fandi Fatma, Endah Fitri Suryani Arsyad Frederica Thalita Riqti Fredrikus Martono Abing Galih Puspa Saraswati Galih Puspa Saraswati Gede Wiratma Jaya Gede Wiratma Jaya Geoff Dougherty Gultom, Tiopan H. M H Hadiyanto Habik Setiawan Hadiyanto Hadiyanto Hamdy, Muhammad Hamzah Fuadi Hanum Yuda Aditya HAQQI, MUHAMMAD SABILA Hary Kusuma Hendri Widiyandari hermanto, djoko heri Hermawan, Hermawan Hesti Rahayu I Gusti Bagus Wiksuana I Ketut Suada I. Istadi Ida Usman Iis Nurhasanah Iis Nurhasanah Iis Nurhasanah Ilham Alkian Indiastari, Dewi Indras Marhaendrajaya Indro Adi Nugroho Inur Tivani Isrina Nur Laili Iwan Setiyawan Izzati, Alif Nurul Jamal, Mardewi Japeri Japeri Jefri Pratama Susanto, Jefri Pratama Jhonwesly Manik K Sofjan Firdausi K Sofjan Firdausi Kadar Nurjaman Kartini Sinaga Khafidhotun Naimah Lilis Sulastri Lulut Tutik M. R. Luthfi Nurrahma Shofiana Ma’rufah, Hani Maman Budiman Maman Budiman Mardewi Jamal Marediyanti Pusvitasari Maryanto - Masayu Widiastuti Milanitalia Gadys Rosandy Moehamad Barmawi Mohamad Barmawi Mohammad Arief Rahman Muckharom, Ahmad Ali MUH. SYAFRIL SUNUSI Muhammad Arif Ikrimah Muhammad Irwanto Muhammad Jazir Alkas Muhammad Yusuf Mukaromah, Uli Aprilia NALLE, CARLES Y.A. Nastiti, Davina Maritza Ndaru Adyono Niniek Budiarti Niniek Budiarti B Nofi Marlini Nuha Nazilah Sahabudin Nur Hasim Efendi Nur Samsu NURJAMAN TINO ENDASAH Nursidi Yunanto Nurwati Nurwati Obet Lumalan Bijang Pandji Triadyaksa Parrung, Paulus Banto Pepen Arifin Pepen Arifin Prameswari Widya Ningtyas Pratama, Satya Priyono Priyono Qudsiyah, Risma Aimatul Rahmawati Rasito Tursinah, Rasito Ravael Eldad Pongtuluran Reyhana Almira Rahma Riky Ardiyanto Rin Hafsatul Asiah Riski Nihayati Rizky Asdi Kesuma Rizky Bimanda Sakti Rob Danang Priatmaja Rohmaniah, Siti Rosandi, Millanitalia Rosandy, Milanitalia Rosandy, Milanitalia Gadys Rosyad, Muhammad Sabilul Roy Tato Bangun Rudi Setiawan Rudi Sohidi Tohir S. Suryono Sa'adah, Fatkhiyatus Sahabudin, Nuha Nazilah Sanggam Ramantisan Santi Yuli Astuti Sembiring, Rinawati Setyowati, Lita Sheilla Rully Anggita Sheilla Rully Anngita, Sheilla Rully Silvia, Sinta Simbolon, Ruminsar Simbolon, Ruminsar ok Singgih Wibowo Sinta Silvia Sri Soenarti Sriwidodo, Untung Suddin, Alwi Sufwan Durri Sukirno Sukirno Sukirno Sukirno Sulistia Nurdianik Sunarno Sunarno Supriyati Supriyati Susilaningsih , Neni Sutanto, Ferdian Sutikman, Sutikman Syamsul Arifin Syamsul Hidayah Syifa Mustika Tamrin Rahman Teguh Tarsito Toto Winata Tri Windarti Triana Sharly P. Arifin Uli Aprilia Mukaromah veronica, Vera W Widiatini Wahyu Ambikawati Wahyu Setia Budi Wilda Amananti Wilda Amananti Winarsih Winarsih Wiwien Andriyanti WIWIEN ANDRIYANTI Yoel Midel Leitabun Yoyon Wahyono Yoyon Wahyono Yunita Indriyani Zaenal Arifin Zaenal Arifin Zaenul Muhlisin Zakiyah Rahmawati