48 citations · 177 across the 18 of their papers we have counts for
14 papers · 1 filter
Wrinkling in Selected Polymer Thin Films Induced by Combined Ion Beam and Humidity Exposure
Alessia Danagoulian, Benli Jiang, Nicholas Russo +13
This study investigates ion beam sputtering (IBS)-induced surface wrinkling phenomena in three polymers with varying hydrophilicity: poly-hydroxy-ethyl-methacrylate (pHEMA), poly-4…
Coherent X-ray Spectroscopy Elucidates Nanoscale Dynamics of Plasma-Enhanced Thin-Film Growth
Peco Myint, Jeffrey M. Woodward, Chenyu Wang +6
Sophisticated thin film growth techniques increasingly rely on the addition of a plasma component to open or widen a processing window, particularly at low temperatures. However, t…
Local step-flow dynamics in thin film growth with desorption
Xiaozhi Zhang, Jeffrey G. Ulbrandt, Peco Myint +6
Desorption of deposited species plays a role in determining the evolution of surface morphology during crystal growth when the desorption time constant is short compared to the tim…
Interplay of broken symmetry and delocalized excitations in the insulating state of 1-TaS
Xun Jia, Anubhab Haldar, Jungho Kim +13
Coexistence of localized and extended excitations is central to the macroscopic properties of correlated materials. For 5d transition metal compounds, electron correlations alone g…
Early Stage Growth of Amorphous Thin Film: Average Kinetics, Nanoscale Dynamics and Pressure Dependence
Chenyu Wang, Karl F. Ludwig, Christa Wagenbach +5
We used the Coherent Grazing Incidence Small Angle X-Ray Scattering (Co-GISAXS) technique to study the average kinetics and nanoscale dynamics during early-stage a-WSi sputter…
Measurement of Ehrlich-Schwoebel barrier contribution to the self-organized formation of ordered surface patterns on Ge(001)
Peco Myint, Denise Erb, Xiaozhi Zhang +6
Normal incidence 1 keV Ar ion bombardment leads to amorphization and ultrasmoothing of Ge at room temperature, but at elevated temperatures the Ge surface remains crystalline a…
Nanoscale dynamics during self-organized ion beam patterning of Si: II. Kr Bombardment
Peco Myint, Karl F. Ludwig, Lutz Wiegart +4
Despite extensive study, fundamental understanding of self-organized patterning by broad-beam ion bombardment is still incomplete and controversial. Understanding the nanopatternin…
Nanoscale dynamics during self-organized ion beam patterning of Si: I. Ar Bombardment
Peco Myint, Karl F. Ludwig, Lutz Wiegart +4
Coherent grazing-incidence small-angle X-ray scattering is used to investigate the average kinetics and the fluctuation dynamics during self-organized nanopatterning of silicon by…
Coherent X-ray measurement of step-flow propagation during growth on polycrystalline thin film surfaces
Randall L. Headrick, Jeffrey G. Ulbrandt, Peco Myint +6
The properties of artificially grown thin films are strongly affected by surface processes during growth. Coherent X-rays provide an approach to better understand such processes an…
Co-GISAXS as a New Technique to Investigate Surface Growth Dynamics
Meliha G. Rainville, Christa Hoskin, Jeffrey G. Ulbrandt +5
Detailed quantitative measurement of surface dynamics during thin film growth is a major experimental challenge. Here X-ray Photon Correlation Spectroscopy with coherent hard X-ray…
Using coherent X-rays to directly measure the propagation velocity of defects during thin film deposition
Jeffrey G. Ulbrandt, Meliha G. Rainville, Christa Hoskin +5
The properties of artificially grown thin films are often strongly affected by the dynamic relationship between surface growth processes and subsurface structure. Coherent mixing o…
Atomic layer deposition-based tuning of the pore size in mesoporous thin films studied by in situ grazing incidence small angle x-ray scattering
Jolien Dendooven, Kilian Devloo-Casier, Matthias Ide +6
Atomic layer deposition (ALD) enables the conformal coating of porous materials, making the technique suitable for pore size tuning at the atomic level, e.g., for applications in c…
Supplemental Material for "High Contrast X-ray Speckle from Atomic-Scale Order in Liquids and Glasses"
S. O. Hruszkewycz, M. Sutton, P. H. Fuoss +13
This supplemental material gives additional detail on Experimental Methods and Hard X-ray FEL Source Characteristics, Calculation of Maximum Speckle Contrast, Extracting Contrast o…
Wavelength Tunability of Ion-bombardment Induced Ripples on Sapphire
Hua Zhou, Yiping Wang, Lan Zhou +6
A study of ripple formation on sapphire surfaces by 300-2000 eV Ar+ ion bombardment is presented. Surface characterization by in-situ synchrotron grazing incidence small angle x-ra…