He is now a full-professor (Chemical Engineering) at Univ. Sebelas Maret, one of national universities in Central Jawa, Indonesia.

He is also the leader of a national project on lithium ion battery. His lab can produce thousands of battery cells per day.

His publications (when he was a student)

噴霧法を用いた粒子プロセスにおけるナノ材料の機能化
W Lenggoro, A Purwanto, W Widiyastuti, WN Wang, K Okuyama
粉砕, 43-47 1 2009

High luminance YAG: Ce nanoparticles fabricated from urea added aqueous precursor by flame process
A Purwanto, WN Wang, T Ogi, IW Lenggoro, E Tanabe, K Okuyama
Journal of Alloys and Compounds 463 (1-2), 350-357 108 2008

Investigation on the correlations between droplet and particle size distribution in ultrasonic spray pyrolysis
WN Wang, A Purwanto, IW Lenggoro, K Okuyama, H Chang, HD Jang
Industrial & Engineering Chemistry Research 47 (5), 1650-1659 172 2008

A pulse combustion‐spray pyrolysis process for the preparation of nano‐and submicrometer‐sized oxide particles
W Widiyastuti, WN Wang, A Purwanto, IW Lenggoro, K Okuyama
Journal of the American Ceramic Society 90 (12), 3779-3785 37 2007

Formation and Luminescence Enhancement of Agglomerate-Free YAG: Ce3+ Submicrometer Particles by Flame-Assisted Spray Pyrolysis
A Purwanto, WN Wang, IW Lenggoro, K Okuyama
Journal of the Electrochemical Society 154 (3), 91 54 2007

Formation of BaTiO3 nanoparticles from an aqueous precursor by flame-assisted spray pyrolysis
A Purwanto, WN Wang, IW Lenggoro, K Okuyama
Journal of the European Ceramic Society 27 (16), 4489-4497 56 2007

Direct preparation and characterization of BaTiO3 nanoparticles from flame assisted spray pyrolysis
A Purwanto, WN Wang, IW Lenggoro, K Okuyama
The 3rd Asian Particle Technology Symposium 9 2 2007

Preparation of Subrnicron-and Nanorneter-Sized Particles Of Y2O3: Eu3+ by Flame Spray Pyrolysis Using Ultrasonic and Two-Fluid Atomizers
A Purwanto, IW Lenggoro, H Chang, K Okuyama
Journal of Chemical Engineering of Japan 39 (1), 68-76 36 2006