The Study of Electrohydrodynamic and Wind Ions Direction Produced by Positive Corona Plasma Discharge

M. Nur1, A. H. Azzulkha1, M. Restiwijaya1, Z. Muchlisin1, and Sumariyah2

1. Atomic and Nuclear Laboratory, Physics Department Faculty of Sciences and Mathematics, Diponegoro University, Semarang, Indonesia

2. Electronics and Instrumentation Laboratory, Physics Department Faculty of Sciences and Mathematics, Diponegoro University, Semarang, Indonesia

* E-mail of the corresponding author: m.nur@undip.ac.id

Abstract

The Electrohydrodynamic (EHD) produced by positive corona plasma discharge has been studied. This research used type of electrodes configuration wire to plane electrodes geometry system.  Wire electrode that was used is made from stainless steel with 5 cm in length and diameter variation from 0.11 mm to 0.38 mm. The plane electrode that was used has circumference shape with diameter of 20 cm. The data acquisition curried out with variations of voltage, distance between electrodes and the variation of wire electrode diameter. EHD phenomenon analysis was studied by current measurement, minor pivot of deformation changes and the reunification time of lubicant oil after switch of external power or electric field. The characteristics of I-V was formed parabolic ((Is≈V2). The results also showed an inverse relation between current and geometry factor. We found that the value of characteristic angle of ionic wind flow direction was depending on field electric value and geometry factor. The deformation of lubricant surface returned to its initial condition after cut off the electric field with time returnee depended on the minor pivot deformation. Keywords: electrohydrodynamic, ion wind, positive corona discharges

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Untuk pertama kali pada tanggal 6 Mei 2006, atas prakarsa Pusat Studi Aplikasi Radiasi dan Rekayasa Bahan – Lembaga Penelitian Universitas Diponegoro Semarang, para peneliti teknologi plasma berkumpul mengadakan seminar nasional pertama tentang plasma dengan topik “Äpplied Plasma Technology” yang dibuka oleh Sekretaris Kepala Lembaga Penelitian UNDIP DR Agus Hartarto dengan keynote speaker Asisten Deputi Kajian Riptek dan Ekonomi Ir. Hari Purwanto MSc. DIC. Tujuan dari seminar ini adalah membangun komunitas para ahli yang. menekuni bidang teknologi plasma sebagai sarana pertukaran informasi dalam membangun dan mengembangkan teknologi plasma di Indonesia, yakni peneliti-peneliti Indonesia yang telah bekerja keras menekuni selama 8 tahun terakhir ini bersamaan dengan hadirnya beberapa peneliti yang pulang dari studinya di mancanegara..Info lebil lanjut:

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Plasma Technology Research and Its Applications: developing in the Faculty of Science and Mathematics Diponegoro University

Muhammad Nur

 Center for Plasma Research, Faculty of Science and Mathematics,

 Diponegoro University, Semarang, Indonesia

E-mail : m.nur@undip.ac.id

 ABSTRACT

 Researchs on the application of plasma technology in the areas of environment, health, food, agriculture have been conducted in the Laboratory of Atomic and Nuclear Physics Division of Plasma Technology in the Faculty of Science and Mathematics, University of Diponegoro. This paper reported research results on plasma technology and its applications in these fields that have been carried out in the recent years. Plasma for environmental applications can reduce gas emissions released by motorcycle and vehicle exhausts. This technology can reduce significantly emissions of SOx, COx, and NOx. Non-polluted plasma mufflerprototype adaptation has been done in four wheels and more vehicles. Pilot scale improvement has done byintegrating reduction system into vehicle muffler from it previous position outside themuffler. High voltage that used to develop plasma condition comes from 12V34A  accumulator which connected with electronic equipment and able to develop voltageup to 20kV. Exhaust gases reduction Ability has done by varying engine rotation.Plasma muffler appearance in vehicle doesn’t change outside dimension of its originalmuffler and it reactor placement in muffler has a function to change resonatorchamber function and make this muffler still fulfill muffler standardization with moreperformance in reducing exhaust gases (COx, NOx. HC). Optimal reduction levelmade at 2200 rpm for COx is 88,52%. for CO is 88,93%, for HC is 97,34% and forNOx at 4800rpm is 76,19%.In the health sector the ability to plasma technology to kill bacteria is also reported. Bacteria decontamination by using glow discharge corona non-thermal atmospheric plasma has been developed and tested. Plasma was generated in a reactor plasma positive corona with electrodes geometry multi point to plan configuration electrodes. This plasma has been generated in air with threshold corona voltage was 3.0 kV inter electrodes distance was 0.4 cm and current was 1.5 mA. Sterilitizationtest has been done by bacteria Escherichia coli decontamination. In agriculture we use plasma technology to enrich the nitrogen in the compost, and accelerate growth for plant of corn, mustard and mangroves. Acceleration of  the growth of mangroves, we found that mangroves can be reduced early growth to have two leaves that usually takes 60 days to 28 days or save time approximately equal to 100%.  More resent of our research on ozone production  by using silent plasma or Dielectric Barrier Discharge Plasma (DBDP) and implemented for microbial inactivation in rice has been done. We realized the Ozone Technology for  Rice Storage System  (OTRISS)

 

Keywords: Plasma, environment, health, food, agriculture, ozone, rice

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Cold plasma on full-thickness cutaneous wound accelerates healing through promoting inflammation, re-epithelialization and wound contraction

Available online 28 January 2014

Abstract

We investigated cold plasma effects on acute wounds of mice. The mice were classified into experimental and control groups. In the former, wounds were treated using cold plasma once daily for 1 min, and then covered with hydrocolloid dressing; wounds in the control were left to heal under hydrocolloid dressing. Daily evaluation was conducted for 15 days. General and specific staining was applied to evaluate re-epithelialization, neutrophil, macrophage, myofibroblast and transforming growth factor beta. It was found that cold plasma accelerated wound healing by 1 day. Plasma may promote the late phase of inflammation, accelerate re-epithelialization and increase wound contraction. More detail:

Correspondence to: prof. Toshio Nakatani, Division of Nursing, Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 5-11-80 Kodatsuno, Kanazawa-shi, Ishikawa-ken 920-0942, Japan. Tel.: +81 76 265 2542; fax: +81 76 234 4363.

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Delapan Inovasi Paling Top Inspirasi dari Petir

Sardi Duryatmo

APA HUBUNGAN ANTARA PETIR DAN KESUBURAN LAHAN? ‘DI DAERAH YANG BANYAK PETIR, BIASANYA TANAHNYA SUBUR,’ UJAR DR MUHAMMAD NUR DEA, PERISET JURUSAN FISIKA UNIVERSITAS DIPONEGORO. IA MEMBUAT TEKNOLOGI PLASMA BERUPA GAS YANG TERIONISASI DALAM LUCUTAN LISTRIK, PERSIS PETIR. TEKNOLOGI ITU MEMPERCEPAT PEMBENIHAN BENIH BAKAU SEKALIGUS MENINGKATKAN PRODUKSI TANAMAN. selanjutnya Inspirasi dari Petir

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Crystal Growth Phenomenon on Corona discharge in air with liquid metal as passive electrode: Electrical and Spectroscopical Analysis

M.Nur1*, M.Z. Arifin1, L. Tambunan1, Z. Muchlisin1, P. Tryadiyaksa1, C. Anam1, and Kusminarto2
1. Physics Department of Diponegoro University, Jl. Prof. Sudarta 1, Semarang, Indonesia 2. Physics Department of Gadjahmada University, Bulak Sumur, Yogyakarta, Indonesia
*Email: m.nur@undip.ac.id
Abstract Corona discharge in air with liquid metal as passive electrode was experimentally studied. Corona discharge was generated in two system electrodes such as: point to plane electrodes, and point to sphere electrodes. Plane and sphere electrodes have been made by liquid metal electrode (Mercury). Corona discharge has been generated by using direct current high voltage. The first aim of this research was to have a discharge glow plasma characteristic with point to plane electrode and the plane (or sphere) electrodes were liquid metal. The second aim was to observe an emission of corona glow discharge plasma. From this research, we found the crystal growth in plane (or sphere) electrode, and we consider that crystal growth observable fact as new phenomenon. The crystal growth has been found only for positive corona discharge and sign of growth follow the very intense electric field at the center point electrode. On the other hand, for negative corona discharge, crystal growth has not been generated. These phenomenon were visually recorded. Corona discharge characteristics were done by analysing spectrocopically and electrically both for plane and sphere electrodes as passive electrodes.
Key words: corona discharge, plasma, point to sphere, point to plane, liquid metal, spectroscopic.

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