John A. Marohn

Professor

Publications

Search PubMed for articles by “JA Marohn”.
For a current list of publications go here.
For current publications also see Orcid and Google Scholar. 

Representative Publications

Nanoscale magnetic resonance imaging
  • C. E. Isaac, C. M. Gleave, P. T. Nasr, H. L. Nguyen, E. A. Curley, J. L. Yoder, E. W. Moore, L. Chen, and J. A. Marohn, Dynamic nuclear polarization in a magnetic resonance force microscope experiment, Phys. Chem. Chem. Phys., 2016, 18, 8806 – 8819, URL http://dx.doi.org/10.1039/C6CP00084C, PMC5609491.
  • J. G. Longenecker, H. J. Mamin, A. W. Senko, L. Chen, C. T. Rettner, D. Rugar, and J. A. Marohn, High-gradient nanomagnets on cantilevers for sensitive detection of nuclear magnetic resonance, ACS Nano, 2012, 6, 9637 – 9645, URL http://dx.doi.org/10.1021/nn3030628.
  • E. W. Moore, S.-G. Lee, S. A. Hickman, S. J. Wright, L. E. Harrell, P. P. Borbat, J. H. Freed, and J. A. Marohn, Scanned-probe detection of electron spin resonance from a nitroxide spin probe, Proc. Natl. Acad. Sci. U.S.A., 2009, 106, 22251 – 22256, URL http://dx.doi.org/10.1073/pnas.0908120106.
  • S. R. Garner, S. Kuehn, J. M. Dawlaty, N. E. Jenkins, and J. A. Marohn, Force-gradient detected nuclear magnetic resonance, Appl. Phys. Lett., 2004, 84, 5091 – 5093, URL http://dx.doi.org/10.1063/1.1762700.
Nanoscale fluctuations
  • S. Lekkala, J. A. Marohn, and R. F. Loring, Electric force microscopy of semiconductors: Theory of cantilever frequency fluctuations and noncontact friction, J. Chem. Phys., 2013, 139, 184702, URL http://dx.doi.org/10.1063/1.4828862.
  • N. Hoepker, S. Lekkala, R. F. Loring, and J. A. Marohn, Dielectric fluctuations over polymer films detected using an atomic force microscope, J. Phys. Chem. B, 2011, 115, 14493 – 14500, URL http://dx.doi.org/10.1021/jp207387d.
  • S. M. Yazdanian, N. Hoepker, S. Kuehn, R. F. Loring, and J. A. Marohn, Quantifying electric field gradient fluctuations over polymers using ultrasensitive cantilevers, Nano Lett., 2009, 9, 2273 – 2279, URL http://dx.doi.org/10.1021/nl9004332.
  • S. Kuehn, J. A. Marohn, and R. F. Loring, Noncontact dielectric friction, J. Phys. Chem. B, 2006, 110, 14525 – 145258, URL http://dx.doi.org/10.1021/jp061865n.
Charge and ion motion in unconventional semiconductors
  • R. P. Dwyer, S. R. Nathan, and J. A. Marohn, Microsecond photocapacitance transients observed using a charged microcantilever as a gated mechanical integrator, Sci. Adv., 2017, 3, e1602951, URL http://dx.doi.org/10.1126/sciadv.1602951.
  • A. M. Tirmzi, R. P. Dwyer, T. Hanrath, and J. A. Marohn, Coupled slow and fast charge dynamics in cesium lead bromide perovskite, ACS Energy Lett., 2017, 2, 488 – 496, URL http://dx.doi.org/10.1021/acsenergylett.6b00722.
  • R. P. Dwyer, L. E. Harrell, and J. A. Marohn, Lagrangian and impedance spectroscopy treatments of electric force microscopy, Phys. Rev. Appl., 2019, 11, 064020, URL http://dx.doi.org/10.1103/PhysRevApplied.11.064020.
  • J. L. Luria, K. A. Schwarz, M. J. Jaquith, R. G. Hennig, and J. A. Marohn, Spectroscopic characterization of charged defects in polycrystalline pentacene by time- and wavelength-resolved electric force microscopy, Adv. Mater., 2011, 23, 624 – 628, URL http://dx.doi.org/10.1002/adma.201003073.
  • T. N. Ng, W. R. Silveira, and J. A. Marohn, Dependence of charge injection on temperature, electric field, and energetic disorder in an organic semiconductor, Phys. Rev. Lett., 2007, 98, 066101, URL http://dx.doi.org/10.1103/PhysRevLett.98.066101.
  • J. D. Slinker, J. A. DeFranco, M. J. Jaquith, W. R. Silveira, Y.-W. Zhong, J. M. Moran-Mirabal, H. G. Craighead, H. D. Abruña, J. A. Marohn, and G. G. Malliaras, Direct measurement of the electric-field distribution in a light-emitting electrochemical cell, Nat. Mater., 2007, 6, 894 – 899, URL http://dx.doi.org/10.1038/nmat2021.
  • E. M. Muller and J. A. Marohn, Microscopic evidence for spatially inhomogeneous charge trapping in pentacene, Adv. Mater., 2005, 17, 1410, URL http://dx.doi.org/10.1002/adma.200401174.
Klarman Hall
150 Baker Lab
john.marohn@cornell.edu
607/255-2004

Education

  • National Research Council Postdoctoral Associate, US Army Research Laboratory
  • PhD, California Institute of Technology
  • BS, Chemistry, University of Rochester
  • BA, Physics, University of Rochester

Departments and programs

Links

Keywords

Pi-conjugated systems, electric force and magnetic resonance force microscopies

Roger F. Loring

Professor

Publications

 

Klarman Hall
218 Baker Lab
roger.loring@cornell.edu
607/255-4873

Education

  • Postdoc, University of Rochester
  • PhD, Stanford University
  • BS, University of California, Davis

Departments and programs

Links

Keywords

 

 

Nonequilibrium statistical mechanics, dynamical processes in liquids, nonlinear spectroscopy

 

Kyle M. Lancaster

Professor

Publications

Bioinorganic Chemistry of the Nitrogen Cycle

Transition Metal Electronic Structure/X-ray Spectroscopy

 

Klarman Hall
678A ST Olin
kml236@cornell.edu
607/255-0502

Education

  • Postdoc, Cornell University
  • PhD Chemistry, California Institute of Technology
  • BA Molecular Biology, Pomona College

Departments and programs

Links

Keywords

inorganic chemistry, bioinorganic chemistry, synthesis, outer-sphere coordination, small-molecule activation, climate change, nitrogen cycle

Paul Lyon Houston

Peter J.W. Debye Professor, Emeritus

Klarman Hall
plh2@cornell.edu

Education

  • Postdoc, University of California, Berkeley
  • PhD, Massachusetts Institute of Technology
  • BA, Yale University

Departments and programs

Links

Melissa A. Hines

Professor

Publications

Klarman Hall
B-48 Baker Lab
melissa.hines@cornell.edu
607/255-3040

Education

  • Postdoc MTS, AT&T Bell Laboratories
  • PhD, Stanford University
  • SB, Massachusetts Institute of Technology

Departments and programs

Links

Keywords

Surface science, scanning probe microscopies, nanofabrication, chemical etching

Jack Freed

Frank and Robert Laughlin Professor of Physical Chemistry, Emeritus

Publications

A Multifrequency ESR Study of the Dynamics of Spin-Labeled T4 Lysozyme, Z. Zhang, M. Fleissner, D. Tipikin, Z. Liang, J.K. Moscicki, K.A. Earle, W. Hubbell, J.H. Freed,  J. Phys. Chem. B, 114, 5503-5521 (2010).

The Lipid-Binding Domain of Wild Type and Mutant Alpha-Synuclein: Compactness and Interconversion Between the Broken-and Extended-Helix Forms, E.R. Georgieva, T.F. Ramlall, P.P. Borbat, J.H. Freed, D. Eliezer, J. Biol. Chem. 285, 28261-28274 (2010).

Structural Dynamics of Bio-Macromolecules by NMR: The Slowly Relaxing Local Structure Approach, E. Meirovitch, Y.E. Shapiro, A. Polimeno, J.H. Freed, Progress in NMR Spectroscopy, 56, 360-405 (2010). 

Structure of the Ternary Complex Formed by a Chemotaxis Receptor Signaling Domain, the CheA Histidine Kinase and the Coupling Protein CheW as Determined by Pulsed Dipolar ESR Spectroscopy, J. Bhatnagar, P.P. Borbat, A.M. Pollard, A.M. Bilwes, J.H. Freed, B.R.Crane, Biochemistry, 49, 3824-3841 (2010).

ESR Microscopy for Biological and Biomedical Applications; C.S. Shin, C.R. Dunnam, P.P. Borbat, B. Dzikovski, E.D. Barth, H.J. Halpern, J.H. Freed, Nanoscience & Nanotechnology Letters 3, 561-567 (2011).

Stochastic Methods for Magnetic Resonance Spectroscopies, A. Polimeno, V. Barone, J.H. Freed, in “Computational Strategies for  Spectroscopy”,  Ed. V. Barone (Wiley, NY,  Ch. 12,  pp. 549-582 (2012).

A 2D-ELDOR Study of Heterogeneity and Domain Structure Changes in Plasma Membrane Vesicles, upon Cross-Linking of Receptors, Y.-W. Chiang,  A. Costa-Filho, B.A. Baird, J.H. Freed, J. Phys. Chem. B 115, 10462-10469 (2011).

Locating a Lipid at the Portal to the Lipoxygenase Active Site, B.J. Gaffney, M. Bradshaw, S. Frausto, J.H. Freed, P. Borbat, Biophys. J. 103, 2134-2144 (2012).

Conformational Ensemble of the Sodium Coupled Aspartate Transporter, E. Georgieva, P.P. Borbat, C. Ginter, J.H. Freed, O. Boudker, Nature Struct. and Molec. Biology 20, 215-221 (2013).

Improved Sensitivity for Long-Distance Measurements in Biomolecules: Five-Pulse Double Electron-Electron Resonance, P.P. Borbat, E.R. Georgieva, J.H. Freed, J. Phys. Chem. Letts. 4, 170-175 (2013).

Pulse Dipolar ESR: Distance Measurements, P.P. Borbat and J.H. Freed in: Structure and Bonding, Vol. 152, J. R. Harmer and C.R. Timmel, Eds. (Springer, Heidelberg, Germany, New York USA), Ch. 1, 1-82 (2014).

HIV gp41 Fusion Peptide Increases Membrane Ordering in a Cholesterol Dependent Fashion, A.L. Lai, J.H. Freed, Biophysical Journal 106, 172-181 (2014).

Bacterial Chemoreceptor Dynamics Correlate with Activity State and are Coupled over Long Distances, D. Samanta, P.P. Borbat, B. Dzikovski, J.H. Freed, B.R. Crane, PNAS, 112, 2455-2460 (2015).

Two-Dimensional Electron-Electron Double Resonance and Molecular Motions: The Challenge of Higher Frequencies, J. Franck, S. Chandrasaken, B. Dzikovski, J.H. Freed ,J. Chem. Phys., 142, 212302-212316 (2015).

Klarman Hall
jhf3@cornell.edu
607/255-3647

Education

  • Postdoc, Cambridge University
  • PhD, Columbia University
  • BE, Yale University

Departments and programs

Keywords

Molecular dynamics and structure by magnetic resonance spectroscopy

Gregory Sion Ezra

Professor

Publications

Publications (full list)

P. Collins, G. S. Ezra and S. Wiggins, J. Chem. Phys. 134, 244105 (2011)

J. N. Stember and G. S. Ezra, Chem. Phys. 381, 80-87 (2011)

A. Sergi and G. S. Ezra, Atti Accad. Pelorit. Pericol. Cl. Sci. Fis. Mat. Nat., Vol. LXXXVIII, No. 2, C1C1002002 (2010)

G. S. Ezra and S. Wiggins, J. Phys. A 42, 205101 (2009)

G. S. Ezra, H. Waalkens and S. Wiggins, J. Chem. Phys.130, 164118 (2009)

J. N. Stember and G. S. Ezra, Chem. Phys. 337, 11-32 (2007)

G. S. Ezra, J. Chem. Phys. 125, Art. No. 034104 (2006).

C. A. Arango, W. W. Kennerly, and G. S. Ezra, Chem. Phys. Lett. 392, 486-492 (2004).

G. S. Ezra, J. Math. Chem. 35, 29-53 (2004).

W. G. Noid, G. S. Ezra, and R. F. Loring, J. Chem. Phys. 119, 1003-1020 (2003).

Klarman Hall
216 Baker Lab
gse1@cornell.edu
607/255-3949

Education

  • Postdoc, Nato Fellow, University of Chicago
  • D.Phil, Oxford University
  • BA (Hons), Oxford University

Departments and programs

Links

Keywords

Theory, dynamics of nonrigid molecules and clusters, electron correlation, semiclassical mechanics, nonlinear dynamics

Robert A. DiStasio Jr.

Associate Professor

Publications

Google Scholar: Robert A. DiStasio Jr.

Klarman Hall
222 Baker
distasio@cornell.edu
607/255-4233

Education

  • Postdoc, Princeton University
  • PhD, University of California, Berkeley
  • BS, Portland State University

Departments and programs

Links

H. Floyd Davis

Professor

Publications

Klarman Hall
260B ST Olin
hfd1@cornell.edu
607/255-0014

Education

  • Postdoc, University of Southern California
  • PhD, University of California, Berkeley
  • BSc, University of Waterloo, Canada

Departments and programs

Links

Keywords

Experimental studies of bimolecular chemical reaction dynamics, catalysis, combustion and atmospheric chemistry

Peng Chen

Peter J. W. Debye Professor

Publications

See complete publication list at Group Website.

Klarman Hall
782A ST Olin
pc252@cornell.edu
607/254-8533

Education

  • Postdoc, Harvard University, 2004-2005
  • PhD, Stanford University, 2004
  • BS, Nanjing University, 1997

Departments and programs

Links

Keywords

Single-molecule super-resolution imaging & manipulation, nanoscale (photo)(electro)catalysis, polymerization catalysis, bioinorganic/biophysical chemistry, bacterial cell imaging, solar and biological energy conversion

 

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