Optical and Raman spectroscopy studies on Fe-based superconductors (2009)
Hu, W. Z., Zhang, Q. M., Wang, N. L.
A brief review of optical and Raman studies on the Fe-based superconductors is given, with special emphasis on the competing phenomenon in this system. Optical investigations on ReFeAsO...
Torsional Actuator and Stepper Motor Based on Piezoelectric d 15 Shear Response (2008)
A. E. Glazounov, Q. M. Zhang, C. Kim, A. E. Glazounov, Q. M. Zhang, C. Kim
Raman phonons of $\alpha$-FeTe and Fe$_{1.03}$Se$_{0.3}$Te$_{0.7}$ single crystals (2008)
Xia, Tian-Long, Hou, D., Zhao, S. C., Zhang, A. M., Chen, G. F., Luo, J. L., ...
Polarized Raman scattering spectra of nonsuperconducting $\alpha$-FeTe and newly discovered superconducting Fe$_{1.03}$Se$_{0.3}$Te$_{0.7}$ single crystals are measured at room temperature. Phonon...
Raman spectra in iron-based quaternary CeO$_{1-x}$F$_x$FeAs and LaO$_{1-x}$F$_x$FeAs (2008)
Zhao, S. C., Hou, D., Wu, Y., Xia, T. L., Zhang, A. M., Chen, G. F., ...
Raman spectra have been measured on iron-based quaternary CeO$_{1-x}$F$_x$FeAs and LaO$_{1-x}$F$_x$FeAs with varying fluorine doping at room temperatures. A group analysis has been made to clarify...
A compact electroactive polymer actuator suitable for refreshable Braille display (2008)
Ren, Kailiang, Liu, Sheng, Lin, Minren, Wang, Yong, Zhang, Q. M.
The large strain, high elastic modulus, and easy processing of poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) electrostrictive terpolymer make it very attractive...
Phonon softening and "forbidden" mode observed by Raman scattering in Na0.5CoO2 (2008)
Zhang, Q. M., An, M., Yuan, S. K., Wu, Y., Wu, D., Luo, J. L., ...
Polarized Raman scattering measurements have been performed on Na0.5CoO2 single crystal from 8 to 305 K. Both the A1g and E1g phonon modes show a softening below Tc1 ~ 83 K. Additionally, the A1g...
Piezoelectric polymers actuators for precise shape control of large scale space antennas (2007)
Chen, Qin, Natale, Don, Neese, Bret, Ren, Kailiang, Lin, Minren, Zhang, Q. M., ...
Extremely large, lightweight, in-space deployable active and passive microwave antennas are demanded by future space missions. This paper investigates the development of PVDF based piezopolymer...
Huang, Cheng, Zhang, Q. M., Yu Li, Jiang, Rabeony, Manese
An electroactive polymer nanocomposite, in which high dielectric constant copper phthalocyanine oligomer (o-CuPc) nanoparticles are incorporated into the block polyurethane (PU) matrix by the...
Huang, Cheng, Zhang, Q. M., DeBotton, Gal, Bhattacharya, Kaushik
By combining the high-dielectric copper phthalocyanine oligomer (PolyCuPc) and conductive polyanline (PANI) within polyurethane (PU) matrix an all-organic three-component dielectric-percolative...
This program has been used to support the training of a graduate student, Steve Gross, in the area of (i) developing a high performance piezo-bimorph based dilatometer which can be used to...
Zhang, Q. M., Furukawa, Takeo, Bar-Cohen, Yoseph, Scheinbeim, J.
For many years, electroactive ceramic, magnetostrictive material and shape memory alloys have been the primary source of actuation materials for manipulation and mobility systems. Electroactive...
Electrostrictive Polymers for Advanced Sonar Transducers (EPAT). Volume 2 (1998)
Zhang, Q. M., Zhu, T., Bharti, V., Mai, T.
This report contains several symposia papers and journal articles on the following topics: Characterization of Electrostrictive P(VDF-TrFE) Copolymers Film for High Frequency and High Load...
Advanced Ferroelectric and Related Electromechanical Polymers (1998)
Xia, Feng, Li, Hengfeng, Huang, Cheng, Zhang, Q. M.
This talk will cover two classes of electroactive polymers under development recent at Penn State. One is the modified poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) polymer and the other...
A class IV flextensional device based on electrostrictive P(VDF-TrFE) copolymers was fabricated and characterized. As an actuator,an produce a displacement of more than 1 mm in air with high load...
Cao, Wenwu, Zhang, Q. M., Cross, L. Eric
The static equilibrium conditions have been derived for piezoelectric-ceramic-polymer composite structures. Rigorous solutions are obtained for a 2-2 composite of lamellar configuration. Under a...
Replication of DNA templates containing 5-formyluracil, a major oxidative lesion of thymine in DNA.
Zhang, Q M, Sugiyama, H, Miyabe, I, Matsuda, S, Saito, I, Yonei, S
5-Formyluracil (5-foU) is a major lesion of thymine produced in DNA by ionizing radiation and various chemical oxidants. To assess its biochemical effects on DNA replication, 22mer oligonucleotide...
Zhang, Q M, Ishikawa, N, Nakahara, T, Yonei, S
Low rates of spontaneous G:C-->C:G transversions would be achieved not only by the correction of base mismatches during DNA replication but also by the prevention and removal of oxidative base damage...
Takao, M, Zhang, Q M, Yonei, S, Yasui, A
The post-replicative adenine:8-oxo-7,8-dihydroguanine (GO) mismatch is crucial for G:C to T:A transversion. This mismatch is corrected by Escherichia coli MutY which excises the adenine from A:GO. A...
Gene fusions in Escherichia coli that showed increased beta-galactosidase expression in response to treatment with a superoxide radical (O2-) generator, methyl viologen (MV), were obtained. These...
Induction of manganese-superoxide dismutase by membrane-binding drugs in Escherichia coli.
Treatment of exponentially growing cells of Escherichia coli with membrane-binding drugs such as chlorpromazine (CPZ) and procaine resulted in an induction of manganese-superoxide dismutase (Mn-SOD)....
Replication of DNA templates containing 5-formyluracil, a major oxidative lesion of thymine in DNA.
Zhang, Q M, Sugiyama, H, Miyabe, I, Matsuda, S, Saito, I, Yonei, S
5-Formyluracil (5-foU) is a major lesion of thymine produced in DNA by ionizing radiation and various chemical oxidants. To assess its biochemical effects on DNA replication, 22mer oligonucleotide...
Zhang, Q M, Ishikawa, N, Nakahara, T, Yonei, S
Low rates of spontaneous G:C-->C:G transversions would be achieved not only by the correction of base mismatches during DNA replication but also by the prevention and removal of oxidative base damage...
Takao, M, Zhang, Q M, Yonei, S, Yasui, A
The post-replicative adenine:8-oxo-7,8-dihydroguanine (GO) mismatch is crucial for G:C to T:A transversion. This mismatch is corrected by Escherichia coli MutY which excises the adenine from A:GO. A...
Gene fusions in Escherichia coli that showed increased beta-galactosidase expression in response to treatment with a superoxide radical (O2-) generator, methyl viologen (MV), were obtained. These...
Induction of manganese-superoxide dismutase by membrane-binding drugs in Escherichia coli.
Treatment of exponentially growing cells of Escherichia coli with membrane-binding drugs such as chlorpromazine (CPZ) and procaine resulted in an induction of manganese-superoxide dismutase (Mn-SOD)....