Emmistasega Subama

ORCID: 0009-0000-8541-5755
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About
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Research Areas
  • Graphene research and applications
  • Agricultural and Environmental Management
  • Graphene and Nanomaterials Applications
  • Nanowire Synthesis and Applications
  • Polymer Nanocomposite Synthesis and Irradiation
  • 2D Materials and Applications
  • Computer Science and Engineering
  • Organic Electronics and Photovoltaics
  • Quantum and electron transport phenomena
  • Conducting polymers and applications
  • Perovskite Materials and Applications
  • Diamond and Carbon-based Materials Research
  • Coconut Research and Applications
  • Food and Agricultural Sciences

Universitas Gadjah Mada
2016-2022

Jambi University
2018-2019

National University of Singapore
2016

Hole transport material (HTM) plays an essential function in perovskite solar cells (PSCs). The utilization of polymer materials has been studied but with little effectiveness, typically resulting a lower conversion efficiency than Spiro-OMeTAD. Spiro-OMeTAD requires comparable dopants and additives, which is source instability. Poor stability higher design costs spiro-OMeTAD require alternatives HTM. In this study, numerical simulation analysis on the PSCs performance graphene oxide (GO) as...

10.1063/5.0073007 article EN AIP conference proceedings 2022-01-01

Abstract Twisted multilayer structures are considered a helpful framework for exploring strongly correlated many-particle systems, where phenomena of physics correlation emerge. Here, we present the Trotter–Suzuki tight-binding time propagation method computing density states (DOS) in 30° twisted bilayer graphene (TBG). This solves time-dependent Schrödinger equation by decomposing Hamiltonian matrices to derive function. The Fourier transform this function yields DOS system up ≈ 1000 000...

10.1088/2516-1075/ad853f article EN Electronic Structure 2024-10-09

Telah dilakukan penelitian mengenai pengaruh kecepatan putaran mesin terhadap hasil coco fiber dan peat buah kelapa dari daerah Jambi. Penelitian ini bertujuan untuk mengetahui persentase cocofiber cocopeat yang dihasilkan berdasarkan pengurai mulai 225 rpm, 450 750 rpm 900 rpm. Masing-masing akan beroperasi selama 2 menit dengan bahan baku 500 gram jumlah blade divariasikan 5 10 buah. Hasil didapatkan pada yaitu(1) Kecepatan berpengaruh dihasilkan. Persentase cocofiberdan tertinggi adalah...

10.37338/ji.v1i1.9 article ID Jurnal Inovator 2018-04-30

Telah dilakukan penelitian mengenai pengaruh perlakuan sabut kelapa terhadap hasil coco fiber dan peat. Penelitian ini bertujuan untuk mengetahui persentase cocofiber cocopeat yang dihasilkan berdasarkan kelapa. Sabut divariasikan adalah kering, dengan 1 hari perendaman, 3 perendaman 6 kecepatan mesin 1300 rpm. Pada diperoleh terbaik sebesar 16,66% terdiri dari serat panjang 13% pendek 3,66% sedangkan sebanyak 48,30%. Semakin lama semakin banyak terurai menjadi Cocofiber Cocopeat

10.37338/ji.v1i2.19 article ID Jurnal Inovator 2018-11-30

The extraction of the dielectric constant nanostructured graphene on SiC substrates from spectroscopy ellipsometry measurement using Gauss-Newton inversion (GNI) method has been done. This study aims to calculate and refractive index by extracting value ψ Δ GNI comparing them with previous result which was extracted Drude-Lorentz (DL) model. results show that can be used substratesmore faster as compared DL Moreover, imaginary part values coefficient extinction drastically increases at 4.5...

10.1063/1.4945500 article EN AIP conference proceedings 2016-01-01

The influence of variationthe blade distance against the coco fiber and peat percentage coconut fruit from Jambi area has been done. study aims to know cocofiber cocopeat produced based on variation decomposition machine starting 5 cm, 10 cm 15 cm. Each round speed will operate for 2 minutes with 500 grams raw material use decomposing blades. results show that (1) provides an value (2) between obtained as much 30% 62% materials. On 34% 58% materials, many 32% 60% (3) maximum blade.

10.35472/281432 article EN Journal of Science and Applicative Technology 2019-01-01
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