@article{kaur_wu_lin_countryman_bradford_erie_riehn_opresko_wang_2016, title={Enhanced electrostatic force microscopy reveals higher-order DNA looping mediated by the telomeric protein TRF2}, volume={6}, journal={Scientific Reports}, author={Kaur, P. and Wu, D. and Lin, J. G. and Countryman, P. and Bradford, K. C. and Erie, D. A. and Riehn, R. and Opresko, P. L. and Wang, H.}, year={2016} } @article{wu_vrejoiu_alexe_gruverman_2010, title={Anisotropy of domain growth in epitaxial ferroelectric capacitors}, volume={96}, number={11}, journal={Applied Physics Letters}, author={Wu, D. and Vrejoiu, I. and Alexe, M. and Gruverman, A.}, year={2010} } @article{xiao_zhang_wu_routaboul_braunstein_doudin_losovyj_kizilkaya_rosa_borca_et al._2010, title={The interface bonding and orientation of a quinonoid zwitterion}, volume={12}, number={35}, journal={Physical Chemistry Chemical Physics}, author={Xiao, J. and Zhang, Z. and Wu, D. and Routaboul, L. and Braunstein, P. and Doudin, B. and Losovyj, Y. B. and Kizilkaya, O. and Rosa, L. G. and Borca, C. N. and et al.}, year={2010}, pages={10329–10340} } @article{sharma_reece_wu_fridkin_ducharme_gruverman_2009, title={Nanoscale domain patterns in ultrathin polymer ferroelectric films}, volume={21}, number={48}, journal={Journal of Physics. Condensed Matter}, author={Sharma, P. and Reece, T. and Wu, D. and Fridkin, V. M. and Ducharme, S. and Gruverman, A.}, year={2009} } @article{wu_kunishima_roberts_gruverman_2009, title={Spatial variations in local switching parameters of ferroelectric random access memory capacitors}, volume={95}, number={9}, journal={Applied Physics Letters}, author={Wu, D. and Kunishima, I. and Roberts, S. and Gruverman, A.}, year={2009} } @article{gruverman_wu_lu_wang_jang_folkman_zhuravlev_felker_rzchowski_eom_et al._2009, title={Tunneling Electroresistance Effect in Ferroelectric Tunnel Junctions at the Nanoscale}, volume={9}, ISSN={["1530-6992"]}, DOI={10.1021/nl901754t}, abstractNote={Using a set of scanning probe microscopy techniques, we demonstrate the reproducible tunneling electroresistance effect on nanometer-thick epitaxial BaTiO(3) single-crystalline thin films on SrRuO(3) bottom electrodes. Correlation between ferroelectric and electronic transport properties is established by direct nanoscale visualization and control of polarization and tunneling current. The obtained results show a change in resistance by about 2 orders of magnitude upon polarization reversal on a lateral scale of 20 nm at room temperature. These results are promising for employing ferroelectric tunnel junctions in nonvolatile memory and logic devices.}, number={10}, journal={NANO LETTERS}, author={Gruverman, A. and Wu, D. and Lu, H. and Wang, Y. and Jang, H. W. and Folkman, C. M. and Zhuravlev, M. Ye. and Felker, D. and Rzchowski, M. and Eom, C. -B. and et al.}, year={2009}, month={Oct}, pages={3539–3543} } @article{wu_vilarinho_wu_gruverman_2008, title={Abnormal domain switching in Pb(Zr,Ti)O-3 thin film capacitors}, volume={93}, number={26}, journal={Applied Physics Letters}, author={Wu, A. Y. and Vilarinho, P. M. and Wu, D. and Gruverman, A.}, year={2008} } @article{scott_gruverman_wu_vrejoiu_alexe_2008, title={Nanodomain faceting in ferroelectrics}, volume={20}, number={42}, journal={Journal of Physics. Condensed Matter}, author={Scott, J. F. and Gruverman, A. and Wu, D. and Vrejoiu, I. and Alexe, M.}, year={2008} } @article{gruverman_wu_scott_2008, title={Piezoresponse force microscopy studies of switching behavior of ferroelectric capacitors on a 100-ns time scale}, volume={1}, number={9}, journal={Physical Review Letters}, author={Gruverman, A. and Wu, D. and Scott, J. F.}, year={2008} } @article{gruverman_wu_fan_vrejoiu_alexe_harrison_scott_2008, title={Vortex ferroelectric domains}, volume={20}, number={34}, journal={Journal of Physics. Condensed Matter}, author={Gruverman, A. and Wu, D. and Fan, H. J. and Vrejoiu, I. and Alexe, M. and Harrison, R. J. and Scott, J. F.}, year={2008} } @article{gruverman_wu_rodriguez_kalinin_habelitz_2007, title={High-resolution imaging of proteins in human teeth by scanning probe microscopy}, volume={352}, ISSN={["0006-291X"]}, DOI={10.1016/j.bbrc.2006.10.182}, abstractNote={High-resolution studies of dental tissues are of considerable interest for biomedical engineering and clinical applications. In this paper, we demonstrate the application of piezoresponse force microscopy (PFM) to nanoscale imaging of internal structure of human teeth by monitoring the local mechanical response to an electrical bias applied via a conductive tip. It is shown that PFM is capable of detecting dissimilar components of dental tissues, namely, proteins and calcified matrix, which have resembling morphology but different piezoelectric properties. It is demonstrated that collagen fibrils revealed in chemically treated intertubular dentin exhibit high piezoelectric activity and can be visualized in PFM with spatial resolution of 10 nm. Evidence of the presence of protein inclusions of 100-200 nm wide and several micrometers long in tooth enamel has been obtained. Furthermore, it is found that the peritubular dentin and intertubular dentin exhibit different piezoelectric behavior suggesting different concentration of collagen fibrils. The obtained results demonstrate a high potential of PFM in providing an additional insight into the structure of dental tissues. It is suggested that the PFM approach can be used to study the structure of a wide range of biological materials by monitoring their electromechanical behavior at the nanoscale.}, number={1}, journal={BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS}, author={Gruverman, A. and Wu, D. and Rodriguez, B. J. and Kalinin, S. V. and Habelitz, S.}, year={2007}, month={Jan}, pages={142–146} }