Hirofumi YAMADA


Surface Potential Measurement of Organic Multi-layered Films on Electrodes by Kelvin Probe Force Microscopy
Nobuo SATOH Shigetaka KATORI Kei KOBAYASHI Kazumi MATSUSHIGE Hirofumi YAMADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2015/02/01
Vol. E98-C  No. 2  pp. 91-97
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Organic Molecular Electronics)
Category: 
Keyword: 
dynamic force microscopyKelvin probe force microscopymetal-shadow-mask depositionorganic light emitting diode
 Summary | Full Text:PDF(2.1MB)

Noise Robust Gradient Descent Learning for Complex-Valued Associative Memory
Masaki KOBAYASHI Hirofumi YAMADA Michimasa KITAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/08/01
Vol. E94-A  No. 8  pp. 1756-1759
Type of Manuscript:  LETTER
Category: Nonlinear Problems
Keyword: 
complex-valued neural networksassociative memorygradient descent learningnoise robustness
 Summary | Full Text:PDF(286.3KB)

Improvement of Coupling-Out Efficiency of Organic Light-Emitting Devices by Dot Array Structures with Organic Layer
Takashi MATSUMOTO Masayuki YAHIRO Kenji ISHIDA Toshihisa HORIUCHI Hirofumi YAMADA Kazumi MATSUSHIGE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/12/01
Vol. E87-C  No. 12  pp. 2112-2113
Type of Manuscript:  Special Section LETTER (Special Section on Recent Progress in Organic Molecular Electronics)
Category: Fabrication of Organic Nano-devices
Keyword: 
OLEDcoupling-out efficiencydot array structures
 Summary | Full Text:PDF(268.7KB)

Investigations of Local Surface Properties by SNOM Combined with KFM Using a PZT Cantilever
Nobuo SATOH Shunji WATANABE Toru FUJII Kei KOBAYASHI Hirofumi YAMADA Kazumi MATSUSHIGE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/12/01
Vol. E85-C  No. 12  pp. 2071-2076
Type of Manuscript:  Special Section PAPER (Special Issue on Near-Field Optics and Its Applications)
Category: 
Keyword: 
PZT cantileverSNOMKFMFM detection
 Summary | Full Text:PDF(1MB)