Metals and Alloys

[1] Positron Annihilation Studies in Search of Fine Precipitates in Fe-9Cr alloys

S. Hari Babu, R. Rajaraman, R. Govindaraj, G. Amarendra, and C. S. Sundar

AIP Conf. Proc. 1349, 1275 (2011).

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[2] Positron annihilation in Cr, Cu, and Au layers embedded in Al and quantum confinement of positrons in Au clusters

Philip Pikart, Christoph Hugenschmidt, Michael Horisberger, Yoshitaka Matsukawa, Masahiko Hatakeyama, Takeshi Toyama, and Yasuyoshi Nagai

Phys. Rev. B 84, 014106 (2011).

[3] Local structure and hardness change of Zr50Cu40Al10 bulk glassy alloy after heavy ion irradiation �

Naoto Onodera, Akito Ishii, Yuka Fukumoto, Akihiro Iwase, Yoshihiko Yokoyama, Fuminobu Hori

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, In Press, September 2011.

[4] Trapping and release of helium in tungsten �

P.E. Lhuillier, T. Belhabib, P. Desgardin, B. Courtois, T. Sauvage, M.F. Barthe, A.L. Thomann, P. Brault, Y. Tessier

Journal of Nuclear Materials 416, 13 (2011).

[5] A study on the redistribution of ion-implanted nitrogen in Ti-modified austenitic steel �

J. Arunkumar, C. David, C. Varghese Anto, K.G.M. Nair, S. Kalavathi, R. Rajaraman, G. Amarendra, B.K. Panigrahi, P. Magudapathy, John Kennedy

Journal of Nuclear Materials 414, 382 (2011).

[6] Bias Effects on the Growth of Helium-Containing Titanium Films

ZHANG Li-Ran, DENG Ai-Hong, YANG Dong-Xu, ZHOU Yu-Lu, HOU Qing, SHI Li-Qun, ZHONG Yu-Rong, WANG Bao-Yi

Chinese Phys. Lett. 28, 77802 (2011).

[7] Phase transformations in MgTbNd alloy

Bohumil Smola, Ivana Stul�kov�, Jaroslava Čern�, Jakub Č�ek and Martin Vlach

physica status solidi (a), AUG 2011.

[8] Enhanced kinetics of hydride-metal phase transition in magnesium by vacancy clustering

R. Checchetto et al.

Phys. Rev. B 84, 054115 (2011).��

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[9] Highly-enhanced reflow characteristics of sputter deposited Cu alloy thin films for large scale integrated interconnections

Takashi Onishi, Masao Mizuno, Tetsuya Yoshikawa, Jun Munemasa, Masataka Mizuno, Teruo Kihara, Hideki Araki, and Yasuharu Shirai

J. Appl. Phys. 110, 034304 (2011).

[10] Homogeneity of ultrafine-grained copper deformed by high-pressure torsion characterized by positron annihilation and microhardness

J. Č�ek, O. Melikhova, M. Janeček, O. Srba, Z. Barnovsk�, I. Proch�zka, S. Dobatkin

Scripta Materialia 65, 171 (2011).

�[11] Isochronal annealing studies of deformed FeSi alloys using positron annihilation spectroscopy �

K.M. Mostafa, F. Gonzalez Camara, Roumen Petrov, P. Rodriguez Calvillo, J. De Baerdemaeker, E. De Grave, D. Segers, Y. Houbaert

Solid State Communications 151, 960 (2011).

[12] Role of intermetallic nanoparticles in radiation damage of austenitic Fe�Ni-based alloys studied by positron annihilation �

D.A. Perminov, A.P. Druzhkov, V.L. Arbuzov

Journal of Nuclear Materials 414, 186 (2011).

[13] Layer-resolved study of the Mg to MgH2 transformation in Mg�Ti films with short-range chemical order �

S.W.H. Eijt, H. Leegwater, H. Schut, A. Anastasopol, W. Egger, L. Ravelli, C. Hugenschmidt, B. Dam

Journal of Alloys and Compounds 509, S567 (2011).

Semiconductors

[1] H passivation of Li on Zn-site in ZnO: Positron annihilation spectroscopy and secondary ion mass spectrometry

K. M. Johansen, A. Zubiaga, F. Tuomisto, E. V. Monakhov, A. Yu. Kuznetsov, and B. G. Svensson

Phys. Rev. B 84, 115203 (2011).�

[2] Positron annihilation spectroscopy in doped p-type ZnO

Sayanee Majumdar and D. Sanyal

AIP Conf. Proc. 1349, 1083 (2011).

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[3] Collateral evidence for an excellent radiative performance of AlxGa1−xN alloy films of high AlN mole fractions

S. F. Chichibu, K. Hazu, T. Onuma, and A. Uedono

Appl. Phys. Lett. 99, 051902 (2011).

[4]Identifying vacancy complexes in compound semiconductors with positron annihilation spectroscopy: A case study of InN

Christian Rauch, Ilja Makkonen, and Filip Tuomisto

Phys. Rev. B 84, 125201 (2011).��

[5] Tracking defect-induced ferromagnetism in GaN:Gd

Martin Roever, Joerg Malindretos, Amilcar Bedoya-Pinto, Angela Rizzi, Christian Rauch, and Filip Tuomisto

Phys. Rev. B 84, 081201 (2011).��

[6] �Identification of the V_Al-O_N defect complex in AlN single crystals

J.-M. M�ki, I. Makkonen, F. Tuomisto, A. Karjalainen, S. Suihkonen, J. R�is�nen, T. Yu. Chemekova, and Yu. N. Makarov

Phys. Rev. B 84, 081204 (2011).��

[7] The evolution of vacancy-type defects in silicon-on-insulator structures studied by positron annihilation spectroscopy

P. G. Coleman, D. Nash, C. J. Edwardson, A. P. Knights, and R. M. Gwilliam

J. Appl. Phys. 110, 016104 (2011).�

Oxides and Insulators

[1] Microstructures and Positron Annihilation Spectroscopy of Nearly Stoichiometric ZrC Coating Layers for Advanced High-temperature Gas-Cooled Reactor Fuel

Jun Aihara, Masaki Maekawa, Shohei Ueta, Atsuo Kawasuso and Kazuhiro Sawa

Journal of the American Ceramic Society, AUG 2011.

[2] Study of defects in an electroresistive Au/La2/3Sr1/3MnO3/SrTiO3(001) heterostructure by positron annihilation

R. Ferragut, A. Dupaquier, S. Brivio, R. Bertacco, and W. Egger

J. Appl. Phys. 110, 053511 (2011).�

[3] n-Heptane adsorption and desorption on porous silica observed by positron annihilation lifetime spectroscopy

Radosław Zaleski, Waldemar Dolecki, Agnieszka Kierys, Jacek Goworek

Microporous and Mesoporous Materials, In Press, August 2011.

[4] Spectroscopic ellipsometry and positron annihilation investigation of sputtered HfO2 films �

Z.W. Ma, L.X. Liu, Y.Z. Xie, Y.R. Su, H.T. Zhao, B.Y. Wang, X.Z. Cao, X.B. Qin, J. Li, Y.H. Yang, E.Q. Xie

Thin Solid Films 519, 6349 (2011).

[5] Investigation of Defects in Actinide-Doped UO2 by Positron Annihilation Spectroscopy

Dani�le Roudil, Marie France Barthe, Christophe J�gou, Annie Gavazzi, Fran�ois Vella

Journal of Nuclear Materials, Accepted, August 2011.

[6] Correlation between interfacial defects and ferromagnetism of BaTiO3 nanocrystals studied by positron annihilation �

Zhi-Yuan Chen, Z.Q. Chen, D.D. Wang, S.J. Wang

Applied Surface Science, In Press,� August 2011.

[7] Annealing study of titanium oxide nanotube arrays �

B. Yang, C.K. Ng, M.K. Fung, C.C. Ling, A.B. Djuri�ić, S. Fung

Materials Chemistry and Physics, In Press, September 2011.

[8] Optimal conditions for NV− center formation in type-1b diamond studied using photoluminescence and positron annihilation spectroscopies

J. Botsoa, T. Sauvage, M.-P. Adam, P. Desgardin, E. Leoni, B. Courtois, F. Treussart, and M.-F. Barthe

Phys. Rev. B 84, 125209 (2011).�

[9] Exchange bias and suppression of superparamagnetism of α-Fe nanoparticles in NiO matrix �

S.P. Pati, B. Bhushan, A. Basumallick, S. Kumar, D. Das

Materials Science and Engineering: B 176, 1015 (2011).

Polymers

[1] Investigation of correlation between microstructure and dielectric properties of cyanate ester/silicate tube hybrids by positron annihilation lifetime spectroscopy

Dongxian Zhuo, Aijuan Gu, Yuanzhen Wang, Guozheng Liang, Jiang-tao Hu, Li Yuan and Wei Yao

Polymers for Advanced Technologies, JUL 2011.

[2] Novel hyperbranched polyphenylsilsesquioxane-modified cyanate ester resins with improved toughness and stiffness

Dongxian Zhuo, Aijuan Gu, Guozheng Liang, Jiang-tao Hu, Li Yuan and Lifu Ji

Polymer International 60, 1277 (2011).

[3] Montmorillonite nanoclay filler effects on electrical conductivity, thermal and mechanical properties of epoxy-based nanocomposites

Rashmi, N.M. Renukappa, Ranganathaiah Chikkakuntappa and N. Shivakumar Kunigal

Polymer Engineering & Science 51, 1827 (2011).

[4] The Spin Probe Dynamics and the Free Volume in a Series of Amorphous Polymer Glass-Formers

H. �vajdlenkov�, M. Iskrov�, O. �au�a, G. Dlubek, J. Kri�tiak and J. Barto�

Macromolecular Symposia 305, 108 (2011).

[5] Physicochemical testing of free films containing non-soluble components

�. B�lcskei, G. Regdon Jr., K. S�vegh, T. Marek and K. Pintye-H�di

Polymers for Advanced Technologies, JUL 2011.

[6] Multi-layer composite hollow fiber membranes derived from poly(ethylene glycol) (PEG) containing hybrid materials for CO2/N2 separation �

Hang Zheng Chen, You Chang Xiao, Tai-Shung Chung

Journal of Membrane Science 381, 211 (2011).

[7] Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes �

Manuel De Guzman, Po-Yu Liu, Jung-Tsai Chen, Kuo-Lun Tung, Kueir-Rarn Lee, Juin-Yih Lai

Journal of Membrane Science 378, 503 (2011).

[8] Testing of the structure of macromolecular polymer films containing solid active pharmaceutical ingredient (API) particles �

�. B�lcskei, K. S�vegh, T. Marek, G. Regdon Jr., K. Pintye-H�di

Radiation Physics and Chemistry� 80, 799 (2011).

[9] Effect of storage on microstructural changes of Carbopol polymers tracked by the combination of positron annihilation lifetime spectroscopy and FT-IR spectroscopy �

Barnab�s Szab�, K�roly S�vegh, Rom�na Zelk�

International Journal of Pharmaceutics� 416, 160 (2011).

[10] Development and positron annihilation spectroscopy (PAS) characterization of polyamide imide (PAI)�polyethersulfone (PES) based defect-free dual-layer hollow fiber membranes with an ultrathin dense-selective layer for gas separation �

Fu Yun Li, Yi Li, Tai-Shung Chung, Hongmin Chen, Y.C. Jean, Sibudjing Kawi

Journal of Membrane Science 378, 541 (2011).

[11] Structural changes of poly(ethylene isophthalate) subjected to gamma irradiation �

G. Consolati, N. Lotti, M. Mariani, A. Munari, F. Quasso

Polymer Degradation and Stability 96, 1297 (2011).

�[12] Free Volume Related Fluorescence Properties of Electron Irradiated Chalcone Doped PMMA Films

Ismayil V. Ravindrachary, R. F. Bhajantri, A. Harisha, and S. D. Praveena

AIP Conf. Proc. 1349, 196 (2011).

[13] Free volume related fluorescent behavior in electron beam irradiated chalcone doped PVA �

V. Ravindrachary, Ismayil, Suresh P. Nayak, Dhanadeep Dutta, P.K. Pujari

Polymer Degradation and Stability 96, 1676 (2011).

[14] Development and characterization of micropores in carbon molecular sieve membrane for gas separation �

Ywu-Jang Fu, Kuo-Sung Liao, Chien-Chieh Hu, Kueir-Rarn Lee, Juin-Yih Lai

Microporous and Mesoporous Materials 143, 78 (2011).

[15] Organic�inorganic nanocomposite polymer electrolyte membranes for fuel cell applications �

Bijay P. Tripathi, Vinod K. Shahi

Progress in Polymer Science 36, 945 (2011).

[16] From single molecules to micelles � An in situ study of porogen aggregation and nanopore formation mechanisms in porous thin films �

Richard S. Vallery, Ming Liu, David W. Gidley, Jin-Heong Yim

Microporous and Mesoporous Materials 143, 419 (2011).

[17] The evolution of poly(hydroxyamide amic acid) to poly(benzoxazole) via stepwise thermal cyclization: Structural changes and gas transport properties �

Huan Wang, Songlin Liu, Tai-Shung Chung, Hongmin Chen, Yan-Ching Jean, Kumari Pallathadka Pramoda

Polymer, In Press, August 2011.

Developmental Works

[1] Photon induced positron annihilation spectroscopy: A nondestructive method for assay of defects in large engineering materials �

P.K. Pujari, K. Sudarshan, R. Tripathi, D. Dutta, P. Maheshwari, S.K. Sharma, D. Srivastava, R. Krause-Rehberg, M. Butterling, W. Anwand, A. Wagner

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Accepted, September 2011.

[2] The development and performance of UV-enhanced APD-arrays for high resolution PET imaging coupled with pixelized Pr:LuAG crystal �

M. Yoshino, J. Kataoka, T. Nakamori, H. Matsuda, T. Miura, T. Katou, Y. Ishikawa, N. Kawabata, Y. Matsunaga, K. Kamada, Y. Usuki, A. Yoshikawa, T. Yanagida

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 643, 57 (2011).

[3] Gamma ray spectra from targets irradiated by picosecond lasers �

J.F. Seely, C.I. Szabo, Uri Feldman, Hui Chen, L.T. Hudson, A. Henins

High Energy Density Physics 7, 150 (2011).

Positron Physics and Astrophysics

[1] Multimode Vibrational Couplings in Resonant Positron Annihilation

Sergio d'A. Sanchez, Marco A. P. Lima, and M�rcio T. do N. Varella

Phys. Rev. Lett. 107, 103201 (2011).��

[2] The temperature and density dependence of positron annihilation in CO2 and SF6

M G Colucci, D P van der Werf and M Charlton

J. Phys. B: At. Mol. Opt. Phys. 44,175204 (2011).

[3] General relativistic ray-tracing algorithm for the determination of the electron�positron energy deposition rate from neutrino pair annihilation around rotating neutron and quark stars

Z. Kov�cs and T. Harko

Monthly Notices of the Royal Astronomical Society, AUG 2011.