Last update: 14 January, 2015

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Thank you very much for your all the coming all the way. STEP-1 was successfully closed. Happily an agreement was made that we are going to STEP-2!! to be held in 2016 in France. The new web-page will be opened shortly. Please keep yourself informed.

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Now some PDF files of presentations at the workshop are available: Go to program table below in this page, and check LINKS of "PDF of PPT", after titles.

The first small international workshop on
Static-Tribo-Electricity of Powder

19th-21st December, 2014
Room E207, Faculty of Engineering, Soka University, Hachioji, Tokyo, Japan

Despite the fact that the electrostatic interaction working on amber particles is one of the oldest description in the science history, its nature or the mechanism of the charge generation due to contact between two materials are not well revealed still now. In this respect the tribo-charging is one of the oldest and newest questions in the science, and engineering. Active researchers on the topic were sometimes working in their own discipline separately, and had less opportunities to meet up to have direct discussions. The aim of this workshop is to provide such opportunities to the current researchers on the topic to get together to have direct discussions face to face, and to establish an international network.

Researchers are trying to reach the same summit from their own routes from each different starting point on the skirt. Hope this workshop helps them to build the next base-camp to attack.


This is an independent workshop,
hosted by: Special Interest Group on Applied Electrostatics, The Association of Powder Process Industry and Engineering, Japan (APPIE)
cooperated by: Special Interest Group on Particle Charging Control, Society of Powder Technology, Japan

Invited Speakers:


Abstracts are available with LINKS on titles.
Some PDF files of presentations are available with LINKS of "PDF of PPT", after titles.
19 December, Friday
15:00- Registration (optional: please contact the organizer)
15:00-16:00 Business meeting (optional)
19:00-21:00 pre-conference mixing: to be announced to the pre-registered attendees.
20 December, Saturday
09:00- Registration
09:30-09:40 Welcome Remarks
(PDF of PPT: 740KB)
Tatsushi Matsuyama (Soka University, Japan)
Session 1: Industrial Electrostatics
chair: Tatsushi Matsuyama (Soka University, Japan)
09:40-10:00 #1 Triboelectrification in gas-solid fluidized beds
(PDF of PPT: 630KB)
Poupak Mehrani (University of Ottawa, Canada)
10:00-10:20 #2 Particle charging in industrial process
(PDF of PPT: 1.1MB)
Matti Murtomaa (University of Turku, Finland)
10:20-10:40 Coffee Break
Session 2: Electrostatic Interactions
chair: Shuji Matsusaka (Kyoto University, Japan)
10:40-11:00 #3 Analysis of electrostatic force on non-uniformly charged particles
(PDF of PPT: 1.3MB)
Boonchai Techaumnat (Chulalongkorn University, Thailand)
11:00-11:20 #4 Anatomy of Toner Adhesion with SPA Measurement and Electrostatic Simulation
(PDF of PPT: 9.6MB)
Masami Kadonaga (Ricoh Company, Japan)
11:20-11:40 Coffee Break
Session 3: Modeling
chair: Peter Ireland (The University of Newcastle, Australia)
11:40-12:00 #5 Mechanistic-based multi-scale modeling of tribocharging of powders during pneumatic transport
(PDF of PPT: 2.2MB)
Khashayar Saleh (Université de Technologie de Compiègne, France)
12:00-12:20 #6 Tribo-electric charging of particles in a shaker
(PDF of PPT: 3.8MB)
Mojtaba Ghadiri (University of Leeds, UK)
12:20-13:40 Lunch
Session 4: Charge Transfer Mechanisms
chair: Daniel Lacks (Case Western Reserve University, USA)
13:40-14:00 #7 Contact electrification of polymers due to electron transfer among mechano anions, mechano cations and mechano radicals which were produced by mechanical fracture of polymers
Masato Sakaguchi (University of Shizuoka, Japan)
14:00-14:20 #8 Contact electrification due to different contact mode for identical materials
Li Xie (Lanzhou University, China)
14:20-14:40 #9 Charge transfer limited by gas breakdown of air
(PDF of PPT: 4.3MB)
Tatsushi Matsuyama (Soka University, Japan)
14:40-15:00 Coffee Break
Session 5: Granular Charging 1
chair: Poupak Mehrani (University of Ottawa, Canada)
15:00-15:20 #10 Electrostatics of granular flow in pneumatic systems
(PDF of PPT: 4.1MB)
Jun Yao (Xiamen University, China)
15:20-15:40 #11 Triboelectric charging of granular systems -- separating effects from particle-wall and particle-particle interactions
(PDF of PPT: 2.5MB)
Daniel Lacks (Case Western Reserve University, USA)
15:40-16:00 Coffee Break
Session 6: Granular Charging 2
chair: Li Xie (Lanzhou University, China)
16:00-16:20 #12 Electrostatic formation of liquid-particle agglomerates
Peter Ireland (The University of Newcastle, Australia)
16:20-16:40 #13 Characterization of particles triboelectrically charged in external electric field
(PDF of PPT: 416KB)
Shuji Matsusaka (Kyoto University, Japan)
16:40-16:50 Closing Remarks
18:00-20:00 post-conference mixing: Restaurant Bar EIS
21 December, Sunday
10:00-11:00 Business meeting (optional)
11:00-12:00 Round-table session (closed)
12:00-13:00 Labo-tour at Powder Technology Group at Soka University (optional)
13:00- Lunch and Excursion (optional)

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