Areas of Interest
The Ade research group is developing and using novel characterization tools to determine the composition, morphology and structure of polymeric and electronic materials at the sub-micron spatial scale. Of particular interest is the quantitative mapping of the chemical composition, the orientation of specific chemical groups in multi-component polymeric devices, the interface structure and the structure-property relationships in these materials. Characterization is achieved by Near Edge X-ray Absorption Fine Structure (NEXAFS) microscopy and through the use of Resonant Soft X-ray Reflectivity and Scattering (RSoXR/RSoXS). The latter methods are still under active development and hold great promise as characterization tools for organic materials. The research is highly interdisciplinary and benefits from extensive collaborations with other research groups and industry. H. Ade has lead a team that developed a Scanning Transmission X-ray Microscope at the Advanced Light Source in Berkeley dedicated to the research of synthetic and natural polymers. This "Polymer STXM" team is comprised of researchers from NCSU, McMaster, Dow Chemical, ALS, SUNY@Stony Brook, NIST, and the Geophysical Laboratory. The microscope developed is now commercially available in adapted form from Accel.
Biographical Sketch
H. Ade holds appointments at NCSU since 1992 (Assist. Professor 1992-97, Assoc. Prof. 1997-2001, Prof. since 2001). He received his Ph.D. in 1990 in Physics from SUNY at Stony Brook and had joined the NCSU faculty in 1992. H. Ade received the K. F. J. Heinrich Award of the Microbeam Analysis Society (2000), a DuPont Young Faculty Award (1994-97) and an NSF Young Investigator Award (1994-1999). He was also recognized by a Sigma Xi Award of the NCSU Sigma Xi Chapter (1995) and an R&D100 Award (1990). H. Ade has delivered more than 170 invited presentations and (co)-authored over 145 research papers. See H. Ade's CV.
Selected Recent Publications | Complete List Of Publications
A Quantitative Study of PCBM Diffusion during Annealing of P3HT:PCBM Blend Films,
B. Watts, W. J. Belcher, L. Thomsen, H. Ade, and P. C. Dastoor,
Macromolecules
ASAP (2009)
Interfacial Widths of Conjugated Polymer Bilayers,
C. Wang, A. Garcia, H. P. Yan, K. E. Sohn, A. Hexemer, T. Q. Nguyen, G. C. Bazan, E. J. Kramer, and H. Ade,
J. Americ. Chem. Soc.
131
,
12538 (2009)
Evolution of Laterally Phase-Separated Polyfluorene Blend Morphology Studied by X-ray Spectromicroscopy,
C. R. McNeill, B. Watts, L. Thomsen, W. J. Belcher, N. C. Greenham, P. C. Dastoor, and H. Ade,
Macromolecules
42
,
3347 (2009)
First Direct Imaging of Electrolyte-Induced Deswelling Behavior of pH-Responsive Microgels in Aqueous Media Using Scanning Transmission X-ray Microscopy,
S. Fujii, D. Dupin, T. Araki, S. P. Armes, and H. Ade,
Langmuir
25
,
2588 (2009)
Role of Solvent Trapping Effects in Determining the Structure and Morphology of Ternary Blend Organic Devices,
K. B. Burke, W. J. Belcher, L. Thomsen, B. Watts, C. R. McNeill, H. Ade, and P. C. Dastoor,
Macromolecules
42
,
3098 (2009)
Near-edge X-ray absorption fine-structure microscopy of organic and magnetic materials,
H. Ade and H. Stoll,
Nature Materials
8
,
281 (2009)
PolLux: A new facility for soft x-ray spectromicroscopy at the Swiss Light Source,
J. Raabe, G. Tzvetkov, U. Flechsig, M. Boge, A. Jaggi, B. Sarafimov, M. G. C. Vernooij, T. Huthwelker, H. Ade, D. Kilcoyne, T. Tyliszczak, R. H. Fink, and C. Quitmann,
Review of Scientific Instruments
79
,
113704 (2008)
Evolution of the nanomorphology of photovoltaic polyfluorene blends: Sub-100 nm resolution with X-ray spectromicroscopy,
C. R. McNeill, B. Watts, L. Thomsen, W. Belcher, S. Swaraj, H. Ade, and P. C. Dastoor,
Nanotechnology
19
,
424015 (2008)
NEXAFS microscopy, resonant scattering and resonant reflectivity: composition and orientation probed in real and reciprocal space
H. Ade and A. P. Hitchcock,
Polymer
49
,
643 (2008)
Resonant soft x-ray reflectivity of organic thin films
C. Wang, T. Araki, B. Watts, S. Harton, T. Koga, Tadanori), S. Basu, H. Ade
Journal Of Vacuum Science & Technology A
25
,
575-586
(
2007
)
[Manuscript in PDF]
X-ray microscopy of photovoltaic polyfluorene blends: Relating nanomorphology to
device performance
C.R. McNeill, B. Watts, L. Thomsen, H. Ade, N.C. Greenham, P.C. Dastoor
Macromolecules
40
,
3263-3270
(
2007
)
[Manuscript in PDF]
Solid state effects in the NEXAFS spectra of alkane-based van der Waals crystals: Breakdown of molecular model
Y. Zou, T. Araki, G. Appel, A.L.D. Kilcoyne, H. Ade
Chemical Physical Letters
430
,
287-292
(
2006
)
[Manuscript in PDF]
Resonant soft x-ray scattering from structured polymer nanoparticles
T. Araki, H. Ade, J.M. Tubbs, D.C. Sundberg, G.E. Mitchell, J.B. Kortright, A.L.D. Kilcoyne
Applied Physics Letters
89
,
Art. No. 124106
(
2006
)
[Manuscript in PDF]
Substrate Effect on the Melting Temperature of Thin Polyethylene
Films
Y. Wang, M. Rafailovich, J. Sokolov, D. Gersappe, T. Araki, Y. Zou, A.L.D. Kilcoyne, H. Ade, G. Marom, A. Lustiger
Physical Review
Letters 96, 028303 (2006)
[Manuscript in PDF]
Direct Imaging and Spectroscopic Characterization of
Stimulus-Responsive Microgels
S. Fujii, S.P. Armes, T. Araki, H. Ade
Journal of the American Chemical Society 127,
16808-16809 (2005)
[Manuscript in PDF]
Soft x-ray resonant reflectivity of low-Z material thin
films
Wang C, Araki T, H. Ade
Applied Physics Letters
87, 214109 (2005)
[Manuscript in PDF]
Diffusion-Controlled Reactive Coupling at Polymer-Polymer
Interfaces
Harton SE, Stevie F. A., H. Ade
Macromol 38,
3543-3546 (2005)
[Manuscript in PDF]
Electronic structure of noncrystalline transition metal silicate and
aluminate alloys
G. Lucovsky, G.B. Rayner, D. Kang, G. Appel, R.S.
Johnson, Y. Zhang, D.E. Sayers, H. Ade, J.L. Whitten.
Appl. Phys.
Lett. 79, 1775-1777 (2001)
[Manuscript in PDF]
Confinement Induced Miscibility in Polymer Blends
S.
Zhu, Y. Liu, M.H. Rafailovich, J. Sokolov, D. Gersappe, D. A. Winesett, and H.
Ade
Nature 400, 49 (1999)
[Manuscript in PDF]
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