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All Journal International Journal of Renewable Energy Development Jurnal Sains Materi Indonesia Spektra: Jurnal Fisika dan Aplikasinya Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) International Journal of Renewable Energy Development
Irmansyah Irmansyah
Departemen Fisika, FMIPA - IPB Kampus IPB Darmaga, Bogor
Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemistry Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics Other

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THE USE OF POLYMER GEL ELECTROLYTE CONTAINING I-/I3- REDOX COUPLE TO ASSEMBLY A SOLID STATE DYE SENSITIZED TiO2 SOLAR CELL Akhiruddin Maddu; Irmansyah Irmansyah; Mahfuddin Zuhri
Jurnal Sains Materi Indonesia Vol 9, No 1: OKTOBER 2007
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.707 KB) | DOI: 10.17146/jusami.2007.9.1.4826

Abstract

THE USE OF POLYMER GEL ELECTROLYTE CONTAINING I-/I3- REDOX COUPLE TO ASSEMBLY A SOLID STATE DYE SENSITIZED TiO2 SOLAR CELL. A solid state dye sensitized TiO2 nanocrystalline solar cells was assembled employing a polymer gel electrolyte contains of iodide/triiodide (I-/I3-) redox couple. The use of solid electrolyte based on polymer matrix for redox ‘couples is aimed to overcome several problems of liquid cell, such as leaks of electrolyte that result in degradation of solar cell. TiO2 nanocrystalline layer was grown on TCO glass substrate by doctor blade technique was stained by synthetic dye Ruthenium 535 for a day. To complete the cell, a polymer gel based on poly(ethylene glycol) (PEG) containing I-/I3- redox couple was sandwiched between a working electrode (nanoporous TiO2 layer on conductive glass substrate) and a counter electrode (graphite sheet). The solid-state cell does not need a clipp, so the gel polymer electrolyte also acts as a glue to join the electrodes. Two cells assembled with different amount of I-/I3- redox couple used in each cell, one of cell use 20 drops of Iodolyte (contains (I-/I3- redox couple) and another cell use 30 drops of Iodolyte solution (purchased fromSolaronix, SA). The cells were characterized their photovoltaic performances included: open-circuit voltage (Voc), short-circuit current (Isc),maximum power (Pmax), fill factor (FF) and energy conversion efficiency.
STRUKTUR DAN SIFAT OPTIK FILM ZnO HASIL DEPOSISI DENGAN TEKNIK SPIN-COATING MELALUI PROSES SOL-GEL Akhiruddin Maddu; Candra A. Basuki; Irmansyah Irmansyah; Sidikrubadi Pramudito
Jurnal Sains Materi Indonesia Vol 7, No 3: JUNI 2006
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (432.191 KB) | DOI: 10.17146/jsmi.2006.7.3.4987

Abstract

STRUKTUR DAN SIFAT OPTIK FILM ZnO HASIL DEPOSISI DENGAN TEKNIK SPIN-COATING MELALUI PROSES SOL-GEL. Film ZnO telah dibuat pada substrat kaca dengan teknik deposisi spin coating melalui proses sol-gel. Pembuatan film ZnO dari prekursor zinc acetate dengan laju putaran 3.000 rpm selama 60 detik di atas pelat spin coater. Film yang diperoleh dikeringkan pada suhu ruang kemudian dilakukan annealing pada suhu 500 oC selama 3 jam. Hasil XRD menunjukkan bahwa film ZnO yang terbentuk adalah polikristal wurtzite heksagonal dengan nilai parameter kisi masing-masing adalah a = 3,290 Å dan c = 5,2531 Å. Ukuran kristal rata-rata ZnO adalah 29,554 nm. Berdasarkan morfologi permukaan hasil foto SEM menunjukkan film ZnO berbentuk lempengan-lempengan (disks) yang tidak seragamdan tidak beraturan. Karakterisasi spektroskopi UV-Vis menghasilkan karakteristik optik film ZnO, yaitu spektrum transmitansi optik dalam rentang panjang gelombang 370 nm sampai dengan 970 nm. Dari data spektrum UV-Vis tersebut ditentukan lebar celah energi ZnO sebesar 3,2 eV.
INTERNET OF THINGS: AUTOMATIC PLANT WATERING SYSTEM USING ANDROID Ridwan Siskandar; Muhammad A Fadhil; Billi Rifa Kusumah; Irmansyah Irmansyah; Irzaman Irzaman
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 4 (2020): Desember 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i4.297-310

Abstract

Internet of Things (IoT) is a system that connects devices directly or indirectly to the internet. The device can work with remote control. One application of the IoT system on the watering system is able to provide an approach to the ease in the process of growth and development of plants. The research carried out was applied to an IoT-based smart plant watering device. The tool is supported with a soil moisture measuring sensor that acts as a benchmark to determine the condition of soil moisture and automatic control of the process of watering plants. The process of watering plants is scheduled in the morning and evening. Information, as long as the device is run will be displayed on the LCD and screen of an Android-based smartphone application. The data can be a comparison value to determine the suitability of soil moisture data in plants. The volume of water supplied in the watering process also affects the level of soil moisture. IoT-based smart plant sprinklers can automate watering by measuring the percentage of soil moisture as a benchmark for providing water during the watering process. Remote watering control can also be done on this tool by using a WiFi signal to the same access point that is connected to the smartphone client and microcontroller. Keyword: agriculture, automatic sprinklers, engineering, IoT
PENERAPAN REKAYASA MESIN SORTIR SEBAGAI PENENTU KEMATANGAN BUAH JERUK DAN TOMAT MERAH BERBASIS IMAGE PROCESSING Ridwan Siskandar; Noer A Indrawan; Billi Rifa Kusumah; Sesar Husen Santosa; Irmansyah Irmansyah; Irzaman Irzaman
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 9, No 3 (2020): September 2020
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v9i3.222-236

Abstract

The embedded systems in the industrial, especially image processing, is increasingly leading to the study of production automation systems such as fruit sorting. Post-harvest sorting system implemented by the industry is manual, so it’s not effective. The solution was to conduct research aimed at modifying post-harvest sorting tools by engineering tomato and orange sorting machines based on their color. The method uses image processing. It’s the most efficient alternative in terms of cost and complexity of hardware design, does not require many sensors, but produces an accurate output. The camera is placed on the mechanical sorting machine system, taking images to determine the sorting execution after the fruit color type are recognized. The results of the research were carried out through several tests, namely: light intensity, color image data, and organoleptics. Light intensity test showed that the position of the tool had a value of 0.78% of the outside light disturbance. Color image shows the range of ripeness values (R/G) for raw tomatoes 0<=1.04; half ripe tomatoes 1.04<=1.39; ripe tomatoes 1.39<=3.59; raw orange 0<=0.92; undercooked oranges 0.92<=0.98; and ripe oranges 0.98<=1.66. Organoleptic test from five observers had the same results as the reading on the fruit sorting tool. Keywords : engineering, fruit maturity, oranges, sorting machines, tomatoes
ANALYSIS OF LATTICE PARAMETER, ERROR, AND THE BANDGAP ENERGY IN CADMIUM SULFIDE (CdS) SEMICONDUCTOR MATERIAL Kamelia Fikriah; Talitha Alya Syaharani; Fitri Melinda; Lulu Lutfiah; Nada Huwaidah; Agnes Tiara Vinanda; Indriyati Rahmi Setyani; Meutia Awani; Alfi Afriliani; Irmansyah Irmansyah; Irzaman Irzaman
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 2 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 2, October 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.062.04

Abstract

Has successfully analyzed the lattice parameter, error, and energy band gap of Cadmium Sulfide (CdS) material. CdS is a semiconductor material. In this study, the CdS used is a material with a cubic crystal structure using database from the International Center for Diffraction Data (ICDD), then the data is calculated using the Cramer-Cohen method. From these data the resulting lattice parameter of a = b = c = 5.823791777 Å with an average error of 0.00034%. The band gap energy calculation of CdS material is 2.477 eV.
THE SIMULATION AND DATA ANALYSIS OF TEMPERATURE SENSOR Hilal Fauzi Ramadhan; Retno Dwi Kartika Sari; Adnan Prasetyo Alamsyah; Adrian Fadhillah; Rizki Nurhikmah; Sarah Aribah Miftahulfallah; Widya Rahma; Ari Firia; Dea Amelia Saputri; Irmansyah Irmansyah; Irzaman Irzaman
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 2 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 2, October 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.062.06

Abstract

The study have successfully simulated 40 units data of temperature sensor during heating process and cooling process. Simulated data in temperature sensor has interval time 3 to 18 seconds for 5 iterations that are combined with other 7 data temperature sensor until get 40 data iterations. The data which has been simulated and then plotted into a graph with the x-axis is time and y-axis is average heating process or cooling process. The graph formmed cupped-down with quadratic function for heating process and cupped-up for cooling process.
THE PARAMETER ANALYSIS OF CUBICAL STRUCTURED CADMIUM TELLURIDE (CdTe) SEMICONDUCTOR MATERIALS Sinta Puspita Apriliani; Susi Susilawati; Koharudin Koharudin; Sarah Nabilah; Dwi Lestariningsih; Witri Desmulyani; Anis Munir Rukyati; Muhammad Fikri Fakhrurozi; Stefiana Sondary Az Zahrah; Irmansyah Irmansyah; Irzaman Irzaman
Spektra: Jurnal Fisika dan Aplikasinya Vol 6 No 2 (2021): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 6 Issue 2, October 2021
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.062.05

Abstract

Cadmium telluride (CdTe) semiconductor materials will be used to analyze the energy gap, lattice parameters, and error value of these cubical structured crystal materials. The data that we used to be analyzed is using data from the International Center for Diffraction Data (ICDD) that used the X-ray Diffraction (XRD) method. This research has been successfully analyzing energy gap, lattice parameters, and the error value of Cadmium telluride (CdTe) materials which have a cube-shaped crystal structure. The result of the gap energy analysis of Cadmium telluride (CdTe) with a cubical structure yields a value of 1.43 eV. The lattice parameters of Cadmium telluride (CdTe) with a cubical structure analyzed by the Cramer-Cohen method yields a value of a = b = c = 9.922 Å. The error value of Cadmium telluride (CdTe) with a cubical stcucture yields a value of 6.75 x 10-4 %.
Effect of Different Hydrothermal Temperatures on the Properties on Nano-Silica (SiO2) of Rice Husk Irzaman Irzaman; Irmansyah Irmansyah; Siti Aisyah; Nazopatul Patonah Har; Aminullah Aminullah
International Journal of Renewable Energy Development Vol 11, No 3 (2022): August 2022
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2022.43904

Abstract

Rice husk has high silica (SiO2) content and can be used as the primary material for making nano-silica. One of the methods for synthesizing nano-silica was the hydrothermal method. The objective of this study was to synthesize nano-silica from rice husks by observing the effect of temperature in the hydrothermal process on the structure, electrical and particle properties of nano-silica. The hydrothermal process temperature was 150, 200, and 250 °C for 4 hours. The results showed that all nano-silicas were in the amorphous phase. The particle size was in the range of 0.16-13.49 nm with more uniform size distribution on nano-silicas of 200 °C and 250 °C than nano-silica at 150 °C. These three nano-silicas were included in the semiconductor category by increasing temperature and frequency. In addition, these treatment variations resulted 200 °C for 4 hours and pressure of 2 atm as the optimum treatment for manufacturing nano-silica of rice husk ash. This nano-silica could be used as semiconductor material for electronic industry.
SISTEM KENDALI SUHU DAN PEMANTAUAN KELEMBABAN UDARA RUANGAN BERBASIS ARDUINO UNO DENGAN MENGGUNAKAN SENSOR DHT22 DAN PASSIVE INFRARED (PIR) Hannif Izzatul Islam; Nida Nabilah; Sofyan Sa'id Atsaurry; Dendy Handy Saputra; Gagat Mughni Pradipta; Ade Kurniawan; Heriyanto Syafutra; Irmansyah Irmansyah; Irzaman Irzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (989.029 KB) | DOI: 10.21009/0305020123

Abstract

We have been successfully to create a Control System Temperature and Air Humidy Monitoring Room Based on Arduino Uno with DHT22 Sensor and Passive Infrared (PIR). DHT22 Sensor be used as a measurement of temperature and air humidity in the room and Passive Infrared Sensor as a tool of detection the movement of people in a room. In this experiment, carried out tests of the DHT22 sensor and digital thermometer with a type AZ-HT-02 to room temperature with a hot air given through a hairdryer for 3 minutes with a span of per 10 seconds. In this test, the obtained data is that the room temperature is which measured by DHT22 sensor have an average difference of 0.93 against digital thermometer (as a calibration). In this test also obtained DHT22 sensor more sensitive Rrelative Humidity (RH), this is caused when given the hot air, humidity measured more rapid adjustment and yet different with digital temperature was slow to adjust air humidity in the room. This device using an Arduino Uno board, a Liquid Crystal Display (LCD) module and Real Time Clock (RTC) as a display of the temperature and air humidity in real time. This device is connected to a fan that can stabilize the room temperature are considered less convient to do activities in the room. Keywords: Air Humidity, Arduino Uno, DHT22 Sensor, Passive Infrared Sensor, Temperature.
KARAKTERISASI JAMUR TIRAM PUTIH DENGAN MEDIA JAGUNG BULAT MENGGUNAKAN FOURIER TRANSFORM INFRARED Irlian Nurmaniah; Fitrah Hadi Firdaus; Ana Fitriana; Maya Risanti; Irmansyah Irmansyah; Irzaman Irzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 4 (2015): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2015
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.521 KB)

Abstract

The production of white oyster mushroom with a variation of load time baglog after an incubation period has been investigated. Based on the results obtained FTIR molecular C-O, C=O, C-H, and O-H on oyster mushrooms. Molecules C-O, C=O, and C-H indicates carbohydrates and O-H molecules indicate the presence of water. The results obtained from the characterization of Fourier Transform Infrared showed the opening day 35th after incubation mass has a moisture content which is small compared with the opening day 40th day and the 45th day. These results indicated a high transmittance value on the FTIR graph results. Keywords: FTIR, O-H cluster, white oyster mushroom, transmittance
Co-Authors Ade Kurniawan Adnan Prasetyo Alamsyah Adrian Fadhillah Agnes Tiara Vinanda Akhiruddin Maddu Alfi Afriliani Aminullah Aminullah Ana Fitriana Anis Munir Rukyati Ari Firia Billi Rifa Kusumah Candra A. Basuki Dea Amelia Saputri Dendy Handy Saputra Dwi Lestariningsih Fitrah Hadi Firdaus Fitri Melinda Gagat Mughni Pradipta Hannif Izzatul Islam Heriyanto Syafutra Hilal Fauzi Ramadhan Indriyati Rahmi Setyani Irlian Nurmaniah Irzaman, Irzaman Kamelia Fikriah Koharudin Koharudin Lulu Lutfiah Mahfuddin Zuhri Maya Risanti Meutia Awani Muhammad A Fadhil Muhammad Fikri Fakhrurozi Nada Huwaidah Nazopatul Patonah Har Nida Nabilah Noer A Indrawan Pramudito, Sidikrubadi Retno Dwi Kartika Sari Ridwan Siskandar Rizki Nurhikmah Sarah Aribah Miftahulfallah Sarah Nabilah Sesar Husen Santosa Sinta Puspita Apriliani Siti Aisyah Sofyan Sa'id Atsaurry Stefiana Sondary Az Zahrah Susi Susilawati Talitha Alya Syaharani Widya Rahma Witri Desmulyani