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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Chemistry Indonesian Journal of Chemical Research Indonesian Journal of Applied Science and Technology
Ramadhanti, Desi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Physics Public Health Other

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A Brief Review on Fabrication of Screen-Printed Carbon Electrode: Materials and Techniques Wahyuni, Wulan Tri; Putra, Budi Riza; Fauzi, Achmad; Ramadhanti, Desi; Rohaeti, Eti; Heryanto, Rudi
Indonesian Journal of Chemical Research Vol 8 No 3 (2021): Edition for January 2021
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2021.8-wul

Abstract

Screen-printed carbon electrode (SPCE) is one of the most interesting designs to combine a working (from carbon based material), reference, and counter electrode in a single-printed substrate. SPCE has been used in many electrochemical measurements due to its advantages for analysis in microscale. This paper summarises the main information about SPCE fabrication from the material and fabrication technique aspect on the flat substrate based on the work that has been published in the last 30 years. The success of SPCE fabrication is highly dependent on the composition of conductive ink which consists of conductive materials, binder, and solvents; substrate; and fabrication techniques. Among the carbon-based materials, the most widely used for SPCE fabrications are graphite, graphene, and carbon nanotubes. The frequent binder used are polymer-based materials such as polystyrene, polyaniline, poly 3,4-ethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS), and polyvinyl chloride. The solvents used for SPCE fabrication are varied including water and various organic solvents. The main characteristics of the SPCE substrate should be inert in order to avoid any interferences during electrochemical measurements. The screen printing and inkjet printing technique are preferred for SPCE fabrication due to easy fabrication and the possibility for mass production of SPCE.
Utilization of the phyphox application (physical phone experiment) to calculate the moment of inertia of hollow cylinders Yasaroh, Sabila; Kuswanto, Heru; Ramadhanti, Desi; Azalia, Aisha; Hestiana, Hestiana
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10 No 2 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v10i2.9237

Abstract

Experiments have been carried out on determining the value of the moment of inertia of a hollow cylinder. This study aims to analyze the value of the moment of inertia with variations in the radius of the hollow cylinder using the Phyphox Application (Physical Phone Experiment). This research is experimental. The tools and material used area 1-meter longboard, three hollow cylinders with different radius sizes but the same mass, smartphone, laptop, caliper, and balance.The experiment of rolling motion on a hollow cylinder on an inclined plane is assisted by data processing in a Phyphoxapplication. From the experiment, the result of the moment of inertia value from data processing is 4.89 x 10-4kg.m2, 9.82 x 10-4kg.m2, 12.4 x10-4kg.m2. This research can be used as a teacher reference in teaching the topic of moments of inertia in physics learning at school. This is highly recommended for distance learning during the pandemic so that mastery of concepts is maximized. Further research is suggested that it can be tried to use other materials with other types of rigid bodies to find the moment of inertia. Further references on digital application media to assist learning are also needed considering the dynamic development of technology.
Profile of ICT Literacy Capability Using Rasch Model at SMP Negeri 2 Fakfak Ramadhanti, Desi; Rahmatullah, Rahmatullah; Wilujeng, Insih; Chusna, Dian Septi Anifa
Indonesian Journal of Applied Science and Technology Vol. 2 No. 3 (2021): Edisi September 2021
Publisher : Indonesian

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Abstract

This research aims to determine learners' ability to solve ICT literacy problems by defining indicators, accessing, managing, combining, evaluating, creating, and communicating. The test was conducted on 24 learners spread across various classes in SMP Negeri 2 Fakfak. The instruments used in the study were 20 multiple-choice questions. This study is a descriptive study using Rasch models. The results showed that the average value of learners in solving defining problems is 49, accessing 27, managing, 18, combining 35, evaluating 20, creating 11, and communicating 15 with an overall average of 21.71 ± 14.62. Rach model shows learners 01L, 02L, and 18P have high intelligence while learners with the lowest ability are with code 07P, 12P, 09P, 08P, 05P, 13P, 14P, 16P, 19P, 21P, and 24P. The results showed that ICT literacy capabilities are still low, especially indicators of creation. This research can be used as a reference for teachers to continue to improve ICT literacy capabilities by doing learning innovation by optimizing the use of technology, communication tools, digital or the internet.
Co-Authors Achmad Fauzi Azalia, Aisha Budi Riza Putra Chusna, Dian Septi Anifa Eti Rohaeti Heru Kuswanto Hestiana, Hestiana Insih Wilujeng Rahmatullah Rahmatullah Rudi Heryanto Wulan Tri Wahyuni Yasaroh, Sabila