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Heri Sutanto
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
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Zno/Ag Thin Layer Microstructure with The Effect of Annealing Temperature Sheilla Rully Anggita; Habik Setiawan; Heri Sutanto
Journal of Natural Sciences and Mathematics Research Vol 4, No 2 (2018): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2251.381 KB) | DOI: 10.21580/jnsmr.2018.4.2.11018

Abstract

The formation of ZnO/Ag morphology in the form of ganglia structures that are overgrown with grains in previous studies has been shown to degrade the presence of E. coli bacteria. In this research, the variations of annealing temperature were studied, namely 250 ℃, 300 ℃, 350 ℃, and 400 ep when the 4% ZnO/Ag deposition had an effect on crystallinity and morphology. The crystallinity of ZnO/Ag was obtained by using the X-Ray Diffraction (XRD) test and the surface morphology of the ZnO/Ag layer using the Scanning Electron Microscope (SEM) test. The results of the research with the XRD test showed that the crystal structure of ZnO/Ag 4% was hexagonal wurtzite at annealing temperature of 250 ℃ and 300 ℃, while the amorphous structure was obtained in ZnO/Ag with annealing temperature of 350 ℃ and 400 ℃. The largest average crystallite size was owned by ZnO/Ag at annealing temperature of 300 ℃ which was 83.408 µm. The morphology obtained from a thin layer of ZnO/Ag 4% with annealing temperature of 250 ℃ and 300 ℃ is in the form of grains composed of ganglia structures. The ZnO/Ag layer with annealing temperature of 300 ℃ had the largest roughness level of 0.422 µm and the largest surface area of 197.233 µm. Meanwhile, the morphology of ZnO / Ag at annealing temperature of 350 ℃ and 400 ℃ did not form a ganglia structure so that the roughness level was low and the surface area was small. The larger the crystallite size, the higher the roughness level, and the larger the resulting surface area. ©2018 JNSMR UIN Walisongo. All rights reserved. 
PERBANDINGAN NILAI DENSITAS CITRA MENGGUNAKAN GRID BERGERAK (MOVING GRID) POSISI HORISONTAL DAN VERTIKAL Supriyati Supriyati; Wahyu Setia Budi; Heri Sutanto
Youngster Physics Journal Vol 2, No 3 (2013): Youngster Physics Journal Juli 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In making radiographs  often differences exposure  factors used when using  moving  of horizontal and vertical. This study aims to determine the comparative value of the density of the resulting image when using a moving grid of horizontal and vertical position. So that research results can be applied in an effort to improve the quality of the radiograph. The study begins with the initial  test  without the grid to determine   density value, the second initial test using a moving grid both  horizontally  and vertically without  the  use  of material / objects.  Research   continued with three  aluminum thickness variation are  1 mm, 3 mm and 5 mm. Then using acrylic  material three thickness   variation are 1 cm,  2 cm and 3 cm. Results of image density measured using a densitometer.Results are then analyzed the data.  The  results  of research  show   value  of   the   image   using  horizontal    grid  density has    smaller  values  than    the  vertical    but   still within the   range  of  values density using   vertical   grid.  Thus   it can    be  said    that    the   image  density  values using  moving    grid   horizontal   position   is  not different with    density  of  the image using a vertical grid at the same exposure factors.Keywords: radiograph,  moving grid,  density,  comparison value
SIFAT OPTIK Zinc Oxide (ZnO) YANG DIDEPOSISI DI ATAS SUBSTRAT KACA MENGGUNAKAN METODE CHEMICAL SOLUTION DEPOSITION (CSD) DAN APLIKASINYA UNTUK DEGRADASI ZAT WARNA METHYLENE BLUE Agustya Tri Surono; Heri Sutanto
Youngster Physics Journal Vol 3, No 1 (2014): Youngster Physics Journal Januari 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In this research, ZnO thin films have been successfully deposited on glass substrates by spray coating technique with a variety of solution concentration 0,3M, 0,5M, 0,75M and 0,9M. Optical properties ZnO thin films were characterized by using UV-Vis spectroscopy. Methylene blue as degradation media was used to estimate the photocatalytic activity from deposition samples ZnO. The research showed that the greater the concentration of the deposition solution in the absorption value increases, the transmittance decreases and getting smaller value of the band gap energy. Assay results photocatalytic activity of ZnO was able to degrade methylene blue to 96.6%.Keywords: Photocatalyst, Spray coating, ZnO, Band gap energy, Methylene blue.
PENGARUH TEMPERATUR SINTERING TERHADAP SIFAT OPTIK LAPISAN TIPIS ZINC OXIDE (ZnO) YANG DIDEPOSISI DIATAS SUBSTRAT KACA DAN APLIKASINYA UNTUK MENDEGRADASI PEWARNA METHYLENE BLUE Nur Hasim Efendi; Heri Sutanto
Youngster Physics Journal Vol 3, No 2 (2014): Youngster Physics Journal April 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In this research, ZnO  thin films have been successfully deposited on glass substrates by spraycoatingtechniquewith avariety the sintering temperature of 300 °C , 400 °C , 450 °C and 550 °C. Optical properties ZnO thin films were characterized by using UV-Vis spectroscopy. The ability ofphotocatalyst of ZnOfordegradation ofmethylene bluecolorwas observedthrough the absorbance test by using UV-Vis to obtain the percentage of color degradation. The results showed that the sintering temperature of ZnO affects the value of energy Gap of ZnO thin film. Higher sintering temperature resulted in higher energy gap. The largest gap energy generated from the ZnO sintering temperature of 450 ˚ Cwith values Eg 3.03 eV. ZnO photocatalyst activity of test results have been able to degrade methylene blue up to 97.62% were obtained from ZnO thin layer of sintering temperature of 450 ˚ C.Keywords: Photocatalyst, Spray coating, ZnO, Band gap energy, Methylene blue, Sintering temperature.
UJI KESESUAIAN CT NUMBER PADA PESAWAT CT SCAN MULTI SLICE DI UNIT RADIOLOGI RUMAH SAKIT ISLAM YOGYAKARTA PDHI Ali Roo'in Mas'uul; Heri Sutanto
Youngster Physics Journal Vol 3, No 4 (2014): Youngster Physics Journal Oktober 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

           CT number is the value of x rays attenuation coefficient determined by the average energy of the x-rays and atomic number absorber and expressed by the attenuation coefficient. function CT number in CT Scan is to assess and differentiate abnormalities in human organs. If there are inaccuracies value of CT number, it can happen misdiagnosis and treatment of patients that successive actions, so the need for periodic compliance of the test.Suitability tests were conducted to value of CT number multislice CT Scan in Radiology Unit of the PDHI Yogyakarta Islamic Hospital. Suitability test were conducted by using a water phantom, 10 mm slice thickness, 140 kV and 280 mAs, gantry tilt of 0 °, round or circular ROI with a size of 2-3 cm. Measurement samples were taken from 5 different regions which the first area in the center of the phantom images, as well as four other regions on the edge of the peripheral or phantom image. From the test have been gotten value of CT number for the water phantom at 5 different positions  2.03 ; 1.38 ; 1.60 ; 1.79 ; 1.83 HU. Five different positions has had no single value that is the result exceeds the tolerance limit of ≤ 4 HU thus all CT values for the number of water which is within the tolerance limit with a value of -4 up  to 4 HU, so it could be concluded that the results of the reading CT number on the  multislice CT Scan  in Radiology Unit of the Islamic Hospital Yogyakarta PDHI still qualifies as recommended regulatory heads BAPETEN Number 9 In 2011 on quality assurance (QA) or quality control (QC) of the CT Scan.                                                  Keywords: Compliance Test, CT number, Water Phantom, ROI, Tolerance Value.
SIFAT OPTIS LAPISAN ZnO:Ag YANG DIDEPOSISI DI ATAS SUBSTRAT KACA MENGGUNAKAN METODE CHEMICAL SOLUTION DEPOSITION (CSD) DAN APLIKASINYA PADA DEGRADASI ZAT WARNA METHYLENE BLUE Dilla Sistesya; Heri Sutanto
Youngster Physics Journal Vol 2, No 3 (2013): Youngster Physics Journal Juli 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

ABSTRACTIn this research, ZnO:Ag thin films have been successfully deposited on glass substrates by spray coating technique with a variety of the doped of percent Ag about 2%, 3%, 4% dan 5%.. Optical properties ZnO:Ag thin films were characterized by using UV-Vis spectroscopy. Methylene blue as degradation media was used to estimate the photocatalytic activity from deposition samples ZnO:Ag . The research showed that silver doped in ZnO can enhance photocatalytic actifity because inhibite the recombination rate. In addition, higher concentration of ion doped, lower band gap energy making electron easily excitate. The result photocatalityc activity of ZnO:Ag able to degrade Methylene blue until 91,37%Keywords: Photocatalyst, Spray coating, ZnO:Ag, Band gap energy, Methylene blue.
Deposisi, karakterisasi sifat optik dan uji degradasi Db71 pada lapisan tipis Zno:Co konsentrasi tinggi Ahmad Pradana; Heri Sutanto; Eko Hidayanto
Youngster Physics Journal Vol 6, No 3 (2017): Youngster Physics Journal Juli 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

A thin layer of ZnO:Co was deposited on a glass substrate using a spray coating method with the addition of Co doping variations of 5%, 10%, 15%, 20% and 25%. The ZnO:Co thin film is further used to degrade the Direct Blue 71 dye solution under sunlight irradiation. ZnO:Co solution was synthesized by dissolving Zinc acetate dehydrate (ZnAc) into isopropanol and then added monoethanolamine (MEA) and cobalt nitrate at room temperature with concentration of ZnAc 0.3M and molar ratio of MEA and ZnAc of 1:1. Then the stirred solution used a magnetic stirrer at a temperature of 70oC for 30 minutes to obtain a clear and homogeneous gel. Gel ZnO:Co is placed on a spray hole and then sprayed on a heated glass substrate at 400oC. The optical properties of the ZnO:Co coating were characterized using UV-Vis spectroscopy. The results showed that the addition of Co doping on a thin layer of ZnO resulted in an increasingly high absorbance in the Co doping sample at a concentration of 15%. In addition, the greater concentration of Co will decrease the value of the energy band gap. The results of photodegradation test of Direct Blue 71 dye solution on ZnO:Co photocatalyst were able to degrade dye by 16% of entire samples .Keywords: Photocatalyst, Thin film ZnO:Co, Spray Coating, Direct Blue 71
STUDI PENGAPLIKASIAN EFEK FOTOKATALIS DARI LAPISAN ZnO:Ag TERHADAP DEGRADASI BAKTERI E.coli Ndaru Adyono; Heri Sutanto; Iis Nurhasanah
Youngster Physics Journal Vol 4, No 3 (2015): Youngster Physics Journal Juli 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Research in the field of green technology using photocatalyst materials can be a solution to environmental pollution, especially contamination of aquatic bacteria. These materials absorb energy from the sun and form hydroxyl radicals that kill bacteria. Zinc oxide has a high photocatalytic efficiency with Eg 3.3 eV in the range of UV - visible light. ZnO can be modified by addition of silver in order to improve the effectiveness as well as anti-bacterial properties. ZnO:Ag 4% layers prepared with thermal spray coating method with deposition temperature at 250ºC and aneling temperature at 450 ºC. XRD measurements performed with CuKα radiation with wavelength at 1.54060 Å and the diffraction angle in range 20 ° - 70 °. The diffraction patterns were identified using the Crystallography Open Database (COD) and software QUALX. ZnO (Id 101-1259) phase and metal Ag (Id 151-2487) phase has formed, but there are also silver oxide phase AgO (Id 150-9488) and Ag2O (Id 150-9684). Crystallite size has been calculated using Debye-Scherrer equation resulted an average value 43.46 nm. The optical properties were measured using a UV-Vis spectrometer in the wavelength range 250-800 nm. Transmittance spectrum were converted into an absorbance spectrum using the Beer-Lambert law. Eg value were analyzed with methods tauc's plot. Linear extrapolation (αhν)2 against hν provide direct transition Eg value 3.1 eV. Photodegradation ability of ZnO:Ag layer performed on E.coli bacteria. TPC measurement results were analyzed using the degradation rate graph, Ct (bacteria concentration) against time exposure. The degradation rate values obtained 1.554 x 10-17 (cfu/ml)-2(minutes)-1.Keywords : ZnO:Ag, band gap energy, XRD, Uv-Vis, TPC, degradation rate.
STUDI PENGENDAPAN PERAK PADA LIMBAH FIXER YANG TELAH JENUH DENGAN METODE PEMBAKARAN DAN PENGENDAPAN NaOH DAN Na2S Dita Kesumayadi; Heri Sutanto
Youngster Physics Journal Vol 4, No 1 (2015): Youngster Physics Journal Januari 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Research has been done in silver recovery in saturated fixer liquid. Silver recovery method that used in this research was sedimentation by using chemical material NaOH and Na2S. Aim of this research is to compare amount of mass of the result of sedimentation method in silver recovery using NaOH and Na2S. This research used NaOH and Na2S in 2 M concentration to saturated fixer liquid at 5 litre amount. Deposits included in koi then burned until 200-3000C of temperature to form two layers. The upper layer was removed homever the layers below let in  the koi. Lower layer was burned back with a 400-6000C to remove the rest of the remaining impurities. When the temperature reaches 6000C, put it in a bucket of water in which that liquid will be solidified and acquired a silver metal. Result of The research have showed that silver which is produced in NaOH sedimentation method has 16 gram and 25 gram in using Na2S sedimentation method. Na2S is more profit because produce silver more than NaOH.  Keywords : fixer, temperature, sedimentation method, NaOH, Na2S.
Desain dan realisasi alat pengukur kandungan kolesterol dalam darah non-invasive Indras Marhaendrajaya; Eko Hidayanto; Zaenal Arifin; Heri Sutanto
Youngster Physics Journal Vol 6, No 3 (2017): Youngster Physics Journal Juli 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Excess total blood cholesterol can lead to heart vessel disorders, stroke and the most fatal can result in death. While testing the cholesterol levels in the blood at this time still use the invasive technique that the patient's blood is taken by using a syringe. This is one of the obstacles / causes of some patients are reluctant to check blood cholesterol. One of the health technologies to detect blood cholesterol in non-invasive is by utilizing the absorption of near infrared ray (NIR) and laser. The change in the physical properties of the resistance shows the chemical content of different solutions. Preparation of non-invasive blood cholesterol gauge by utilizing oxymeter sensor capable of producing voltage changes in various liquid medium and Atmega 8535 microcontroller as a minimum system in controlling output value in digital data form. The system or equipment to be fabricated in this study is a non-invasive method (without injuring the patient's body while taking blood samples) to determine the blood cholesterol content by utilizing the physical properties of laser absorption or NIR sensors on various blood cholesterol levels. From the research results have been made series of sensor interfaces and serial data communications are displayed digitally. The test results show that the equipment made has shown good performance but still limited its performance test. The results of the research will be developed into a national program of providing cheap, non-invasive portable and movable health test kits. Keywords: Heart Disease, Blood Cholesterol, NIR, Laser, Microcontroller.
Co-Authors . Istadi A Asriyanto A. Suhandi Abellia, Gaby Adam Sumboko Adi Pamungkas 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 Banto, Paulus 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 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 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 Japeri Japeri Jefri Pratama Susanto, Jefri Pratama Jhonwesly Manik K Sofjan Firdausi K Sofjan Firdausi Kadar Nurjaman Kartini Sinaga Khafidhotun Naimah Kurniawan, Kukuh Dian 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 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 Simbolon, Ruminsar Simbolon, Ruminsar ok Singgih Wibowo Sinta Silvia Sri Soenarti Sriwidodo, Untung Suddin, Alwi Sufwan Durri Sukirno Sukirno Sukirno Sukirno Sulistia Nurdianik Supriyati Supriyati Sutikman, Sutikman Syamsul Arifin Syamsul Hidayah 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 Yuyun, Yuyun Zaenal Arifin Zaenal Arifin Zaenul Muhlisin Zakiyah Rahmawati