News 2019

April 22, 2019, Our article titled “Strain vs. charge mediated magnetoelectric coupling across the magnetic oxide/ferroelectric interfaces. is published by the Royal Society of Chemistry: RSC Advances 9 (29), 13033-13041, 2019.

April 10, 2019: Prof. Fohtung presents the group’s latest results as an invited seminar at the Division of Synchrotron Radiation, of the Physics Department at Lund University, Sweden.  Prof. Edwin Fohtung presents the groups latest results in as an invited talk titled “X-ray mapping of Topological Relics of Symmetry Breaking in Ferroics using Coherent X-ray Probes. This research project is generously funded by the  DOD AFOSR.

March 28, 2019, Our article titled ” Bragg Coherent Diffractive Imaging of Strain at the Nanoscale” is published in the Journal of Applied Physics.

March 18, 2019: Prof. Fohtung presents the group’s latest results as an invited talk at the Institute for Photon Science (IPS), of the Karlsruhe Institute of Technology (KIT), Karlsruhe Germany  (03.18.2019).  Prof. Edwin Fohtung presents the groups latest results in as an invited talk titled ” X-ray Nanovision of Ferroic Phases in Multiferroics. This research project is generously funded by the  DOD AFOSR.

March 14, 2019, Our article titled “Enhanced magnetism in lightly doped manganite heterostructures: strain or stoichiometry?” is published in Nanoscale, 2019,11, 7364-7370; http://dx.doi.org/10.1039/C8NR09693G

March 10-14, 2019, Dmitry Karpov presented our group research as an invited oral talk (titled “Three-dimensional imaging of vortex phase in ferroic materials”) at the TMS Annual Meeting & Exhibition Symposium on Characterization of Materials through High-Resolution Imaging held in San Antonio, TX.

News 2018

December 14, 2018, Tassos presents some of the group’s recent findings as a seminar at LANL titled “Advanced electronic and energy materials through coherent scattering techniques”.

November 23, 2018, Dmitry Karpov presented his research conducted at the Fohtung Research Group in a poster and a flash-talk (titled “Three-dimensional imaging of ferroic materials using coherent X-rays”) at an annual PSI Condensed Matter Retreat at the Swiss Federal Laboratories for Materials Science and Technology (EMPA, Dübendorf), winning a poster prize. Link to the book of abstracts (page 59): https://tinyurl.com/y7umtjhv

September 23, 2018, Our book  chapter titled “Bragg Coherent Diffraction Imaging Techniques at 3rd and 4th Generation Light Sources” is published in the book “Materials Discovery and Design” as part of the Springer Series in Materials Science book series (SSMATERIALS, volume 280)

Prof. Edwin Fohtung Presents the groups latest results in as an invited talk at RPI.  This research project is generously funded by the LANS/DOE, the LANSCE Professorship and LDRD in Los Alamos National Laboratory and the DOD AFOSR.  (09.12.2018)

 

September 13, 2018, Dr. Anastasios (Tassos) Pateras gives a physics colloquium and seminar at NMSU titled “Strain and Polarization Dynamics in Energy and ElectronicMaterials Through Novel X-Ray Imaging Techniques”

September 8, 2018, Dr. Anastasios Pateras joins from the University of Wisconsin, Madison. Welcome, Tasos!!

August 14, 2018, Dr. Dmitry Karpov leaves the group and joins the Swiss Light Source (SLS) at the Paul Scherrer Institut as a postdoctoral scientist at the Coherent Small-Angle X-ray Scattering cSAXS beamline. Congrats Dima!!

Prof. Fohtung presents the group’s latest results as an invited talk in the Coherence 2018: International Workshop on Phase Retrieval and Coherent Scattering at Port Jefferson, NY  (06.26.2018)

Prof. Edwin Fohtung presents the groups latest results in as an invited talk titled “ Imaging of ferroelectric vortices in complex oxides”. This research project is generously funded by the LANS/DOE, the LANSCE Professorship and LDRD in Los Alamos National Laboratory and the DOD AFOSR.

June 16, 2018, Dr. Richard Mbatang leaves the group and joins Intel corporation, Portland Oregon as a process engineer. Congrats Richard!!

May 16, 2018, Elijah Scholds joins the group. Welcome, Elijah!!

May 16, 2018, Dmitry Karpov Defends his Ph.D. Dissertation. Congrats Dima!!

May 07, 2018 Our article titled ” A Shack-Hartmann Sensor for Single-Shot Multi-Contrast Imaging with Hard X-rays” is published in the Journal of Applied Sciences

May 01, 2018, Hannah Rich leaves the group. You shall be missed Hannah!!

April 27, 2018, Dr. Edwin Fohtung receives a new $396 K three-year grant from the DOD- Airforce Office of Scientific Research

April 04, 2018 Hannah Rich Defends her MSc. Thesis. Congrats Hannah!!

April 04, 2018 Mohammad Abdullah Defends his MSc. Thesis. Congrats Mohammad!!

April 04, 2018 Binod Paudel Defends his MSc. Thesis. Congrats Binod!!

April 02, 2018 Richard Mbatang Defends his Ph.D. Dissertation. Congrats Richard!!

Prof. Fohtung presents the group’s latest results as an invited talk in the Condensed Matter Physics Seminar Series in the Department of Physics at Colorado State University, Fort Collins, Co (02.06.2018)

Prof. Edwin Fohtung presents the groups latest results in as an invited talk titled “ Nanoscale Imaging of Topological Relics of Symmetry Breaking in Oxide Nanostructures”. This research project is generously funded by the LANS/DOE, the LANSCE Professorship and LDRD in Los Alamos National Laboratory and the DOD AFOSR.

An Editorial Article on Coherent Diffraction Imaging Published in the Journal of Optics. (01.02 2018)

An Editorial in the Journal of Optics on “Special issue on coherent diffractive imaging” is published in J. Opt. 20 (2018) 010201. In this Editorial, we discussed recent advances in state of the art X-ray Coherent Diffraction Imaging Techniques.

News 2017

Article Published in Journal of PHYSICAL REVIEW APPLIED. (09.19.2017)

Our article titled “Enhanced energy storage with polar vortices in ferroelectric nanocomposites” is published in the Journal of Phys. Rev. Applied 8, 034014 (2017). In this article, we utilize Landau phase field computations to show that the switching behavior of the topological structure (vortex and antivortex pair) under an external electric field in BaTiO3 nanowires can be used to enhance the energy-storage efficiency over 95% at a relatively low electric field of 140 MV/m. Our findings demonstrate a  new strategy to enhance the energy-storage density with topological vortex structures in ferroelectric nanocomposites

Article Published in Journal of Physica Scripta.  (10.16.2017)

Our article titled “Pair Distribution Function Analysis applied to Decahedral Gold Nanoparticles” is published in the Journal of Physica Scripta, Vol. 92, number 11(2017). In this article, we explored the sensitivity of existing synchrotron x-ray PDF instruments for distinguishing four different simple models for our gold nanoparticles: a multiply twinned fcc decahedron with either a single gap or multiple distributed gaps, a relaxed body-centered orthorhombic (bco) decahedron, and a hybrid decahedron. PDF measurements provide a statistical description of the pair correlations of atoms within a material, allowing one to evaluate the probability of finding two atoms within a given distance.The data simulations of the models were then compared with experimental data from synchrotron x-ray total scattering. We present our experimentally derived atomistic models of the gold nanoparticles, with surprising results and a perspective on remaining challenges. Our findings provide evidence for the suitability of PDF analysis in the characterization of other nanosized particles that may have commercial applications.

Article Published in Nature Communications.  (08.28.2017)

Our article titled “Three-dimensional imaging of vortex structure in a ferroelectric nanoparticle driven by an electric field” has been published in Nature journal Nature Communications 8, Article number: 280 (2017) doi:10 1038/s41467-017-00318-9. This paper details recent advances in studying Topological defects such as complex and stable configurations of electric polarization on Barium individual Titanate Nanoparticles using Bragg Coherent x-ray diffraction imaging techniques.

Prof. Fohtung presents an invited lecture at the at the 2017 Advance Photon Source/Center for Nanoscale Materials Users Meeting Argonne National Laboratory in Lemont, IL (05.09.2017)

Prof. Edwin Fohtung presents the groups latest results in as an invited lecture titled “Bragg Coherent Diffractive Imaging of Topological Defects in Hexaferrites”. The work is funded by the LANS/DOE and the DOD AFOSR.

Welcome new group member Binod Paudel (04.05. 2017)

Binod Paudel joins the Fohtung Research Group as a PhD research assistant.

Dmirty Karpov presents a contributed poster at the 2017 COHERENCE WORKSHOP in PETRA IV, Deutsches Elektronen-Synchrotron. Which is a Research Centre of the Helmholtz Association. Hamburg Germany (06.27.2017)

Dima presents the group’s latest results in a poster titled “Nanoscale Imaging and Tracking of Vortex Dynamics in a Single Ferroic Nanoparticle”. This work is a joint collaboration with colleagues at NMSU, UCSD and LANL. The work is funded by the LANS/DOE and the DOD AFOSR.

Dmirty Karpov presents a contributed poster at the 2017 Advance Photon Source/Center for Nanoscale Materials Users Meeting Argonne National Laboratory in Lemont, IL (05.09.2017)

Dima presents the group’s latest results in a poster titled “Small Particles an even Bigger Data Problems in Bragg Coherent Diffractive Imaging “. This work is a joint collaboration with colleagues at NMSU, UCSD and LANL. The work is funded by the LANS/DOE and the DOD AFOSR.

Congratulations!! Samuel Succesfully defends his M.sc Degree (05.03. 2017)

Sam presents and defends his M.sc  degree in Computer sciences on his research work supported by the DOD and Los Alamos National Laboratory through our research group. In his thesis titled “Software for iterative phase retrieval” Sam  upgraded and designed a user friendly platform for a software capable of tracking dislocation in reconstructed X-ray Bragg  Coherent Diffraction data.

News archive 2016

Prof. Fohtung presents an invited talk titled Birefractive coherent diffractive imaging: novel probe for magneto-electric phases: SPIE – Spintronics-IX, Spin-Orbit Coupling Session: Optics & Photonics Conference, San Diego-CA, August 28th –September 1st 2016.

(08.30.2016)

Prof. Edwin Fohtung presents his groups latest results on a new imaging approach called Birefringent Coherent Diffraction imaging. This techniques takes advantage of the anisotropy of materials at the optical frequencies to provide contrast for magnetic, ferroelectric and defect imaging with sub micron resolution. The work is funded by the LANS/DOE, and DOD.

Prof. Fohtung presents an invited talk titled Probing of Electronic and Magnetic Phases Using Neutron Scattering: Young Researchers Meeting, Oak Ridge National Laboratory, Oak Ridge -TN, August 18th –19st 2016.

(08.18.2016)

Prof. Edwin Fohtung presents his groups latest results on probing of magnetic and electronic phases in PZT/LSMO heterostructures using polarized neutron reflectivity at Oakridge national Laboratory. This was a workshop organized by the Quantum Condensed Matter Group at Oakridge National laboratory. The work is funded by the LANS/DOE, and DOD.

Prof. Fohtung presents an invited talk titled Lens-Less Microscopy at Coherent Light Sources: Physics and Theory Colloquium Series, Los Alamos National Laboratory, NM. August 11th 2016.

(08.11.2016)

Prof. Edwin Fohtung presents his groups latest results on probing of soft and condensed matter systems using emergent imaging techniques at a Physics and Theory Colloquium Series, Los Alamos National Laboratory, NM. The work is funded by the LANS/DOE, and DOD.

Our paper on Ab initio study of magnetoelectric coupling in La0.66Sr0.33MnO3 / PbZr0.2Ti0.8O3 multiferroic heterostructures is published in Journal of Physics: Condensed Matter

(08.05.2016)

Prof. Fohtung presents an invited talk titled Towards Sub-nanometer Magnetic Imaging: Coherent Diffraction Imaging Techniques at Light Sources, Santa Fe, NM. July 21st -22nd 2016.

(07.21.2016)

Prof. Edwin Fohtung presents his groups latest results on advances in Coherent Diffraction Imaging Techniques in a MaRIE workshop on the Opportunities for New X-Ray Sources to Shed Light on Mesoscale Functional Materials, Santa Fe, NM. July 21st -22nd  2016 .The work is funded by the LANS/DOE, and DOD.

Prof. Fohtung presents an invited talk titled Coherent diffraction imaging Techniques at 3rd and 4th generation light sources:, Santa Fe, NM. May 16th -18st 2016.

(05.18.2016)

Prof. Edwin Fohtung presents his groups latest results on advances in Coherent Diffraction Imaging Techniques at LANL Workshops on Decadal Challenges of Materials Science and on MaRIE-related Science and Technology. Data Science Optimal Learning for Materials Discovery. The work is funded by the LANS/DOE, and DOD.

News archive

2016

Prof. Fohtung presents an invited talk titled Magneto-electric Coupling Effects using Coherent Diffraction Imaging: Physics Colloquium & Seminar, Virginia Tech, Blacksburg Virginia, March 28th 2016. (03.28.2016)

Prof. Edwin Fohtung presents his groups latest results on Diffraction Imaging at a Physics Colloquium in Virginia Tech, Blacksburg. The work is funded by the LANS/DOE, and DOD.

Prof. Fohtung presents an invited talk at the Karlsruhe Nano Micro Facility (KNMF) Karlsruhe Institute of Technology (KIT), Karlsruhe-Germany, (03.01.2016).

Prof. Edwin Fohtung presents his groups latest results on tunable non-linear optical elements. This work is a joint collaboration with colleagues at KIT and LANL. The work is funded by the LANS/DOE, and DOD.

2015

Welcome new group members Ayana Ghosh, Mohammad Abdullah-Al-Mamun and  Dennis Trujillo (07.30.2015)

Ayana, Mohammad and Dennis join the Fohtung Research Group as PhD research assistants.

Cameron Radosevich is awarded a summer internship at Intel Corp Fab11x located in Rio Rancho, NM  (06.02.2015)

Cameron receives a summer internship working at  Intel Fab11x location in Rio Rancho, NM.

Douglas Brown is awarded a summer internship at Oakridge National Laboratory ORNL(06.01.2015)

Doug receives a summer internship working with Dr. Tom Pelaia a senior R&D staff and the Applications Leader for Accelerator Physics at ORNL on the Open XAL program.

Prof. Fohtung is named the 2015 Rosen Scholar at Los Alamos National Laboratory(04.02.2015)

Dr. Edwin Fohtung has been named the 2015 Rosen Scholar at the Los Alamos Neutron Science Center (LANSCE) of Los Alamos National Laboratory (LANL).The Rosen Scholar is a fellowship created to honor the memory of Louis Rosen, his accomplishments, hard work, and affection for the broad range of science performed at LANSCE. Louis Rosen’s outstanding leadership and scientific career at Los Alamos National Laboratory (LANL) covered six-and-a-half decades and included conception of the Los Alamos Meson Physics Facility (LAMPF), during 1960, that culminated with its commissioning in 1972. LAMPF was a unique nuclear science research tool through the 1990s. Now called Los Alamos Neutron Science Center (LANSCE), the facility continues to play a paramount role in basic sciences and national security needs for the country. From his scientific vision to his kind and effective mentoring, Rosen’s tenure, from the Manhattan Project in 1943 till his passing in 2009, exemplified the best in leadership at all levels.

Prof. Fohtung is appointed Guest Editor of Journal of Optics special issue on ‘coherent diffractive imaging’ (03.20.2015)

The Journal of Optics,  specials issue on coherent diffractive imaging is dedicated to publishing peer reviewed articles on progress in diffractive imaging.

Prof. Fohtung presents an invited talk at the minerals metals & materials society (TMS) conference in Orlando, FL (03.16.2015)

Prof. Edwin Fohtung presents his groups latest results on Imaging of Magnetostriction in Nickel nanostuctures using Coherent X-ray diffraction imaging. This work is a joint collaboration with colleagues at NMSU, UCSD and LANL. The work is funded by the LANS/DOE, DOD and NSF.

Prof. Edwin Fohtung receives a Los Alamos National Laboratory ( LANL) funded subcontract award through the Theory-T division (03.05.2015)

Prof. Edwin Fohtung has been awarded a two year $100,000 grant to explore emergent phenomena in correlated oxides and Pb- free ferroelectrics using a combination of advanced coherent photon scattering techniques and theoretical computation. The ultimate goal is to develop new methods of fabricating materials that might be technologically important for new-generation energy research.

Erandi Wijerathna presents a contributed talk at the APS March Meeting in San Antonio, TX (03.04.2015)

Erandi Wijerathna presents her latest results on Strain and defects in Core-Shell Ni-NiO nanoparticle at the Annual American Physical Society (APS) March meeting in San Antonio, Texas.

Erandi Wijerathna receives a Graduate Student Travel Award  from the NMSU College of Arts & Sciences (02.04.2015)

Erandi Wijerathna receives a $500 USD travel award from the College of Arts and Sciences to support her trip to the Annual American Physical Society (APS) March meeting in San Antonio, Texas.

Welcome new group member Dmitry Karpov (01.09.2015)

Dmitry Karpov joins the Fohtung Research Group as a PhD research assistant.

2014

Article Published in Applied Physics Leters.  (10.29.2014)

Our article titled “Curvature-induced and thermal strain in polyhedral gold nanocrystals” has been published in AIP publishing Applied Physics Letters Appl. Phys. Lett. 105, 173108 (2014). This paper details recent advances in using Coherent x-ray diffraction imaging techniques to study the local strain distribution in polyhedral gold nanocrystals.

Prof. Edwin Fohtung receives Department of Defence (DOD) Award through the Air force Office of Scientific Research (AFOSR)  (09.15.2014)

Prof. Edwin Fohtung has received a three year $380,000 DOD-AFOSR grant  to explore how new types of magnetoelectronic phases can be engineered at the interface between piezoelectric (PZT) and magnetic (LSMO) under extreme conditions.

Douglas Brown receives a 500 USD award (09.04.2014)

Douglas Brown presents his latest results on gradient and density constraints applicable to Iterative Phase retrieval algorithms at the International Workshop on Phase Retrieval and Coherence 2014 poster session in Chicago. He receives a $500 USD  award.

Welcome new group members Cameron, Mbatang and Wijerathna (08.18.2014)

Erandi Wijerathna and Richard Mbatang join the Fohtung Research Group as PhD research assistants while Cameron Radesovic joins as an undergradute research assistant.

The website is open (08.07.2014)