Ivan I Kravchenko Senior R&D staff member Contact kravchenkoii@ornl.gov | 352.222.6474 All Publications Improvement of Drain Breakdown Voltage with A Back-Side Gate on AlGaN/GaN High Electron Mobility Transistors... Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy... Nanopillar-based enhanced-fluorescence detection of sur-face-immobilized beryllium.... Large-Scale All-Dielectric Metamaterial Perfect Reflectors... Dielectric Metasurface Analogue of Electromagnetically Induced Transparency... Enhanced Absorption in 2D Materials Via Fano- Resonant Photonic Crystals... A Novel Backside Gate Structure to Improve Device Performance... Degradation mechanisms of Ti/Al/Ni/Au-based Ohmic contacts on AlGaN/GaN HEMTs... Nanoscale pillar arrays for separations... Study of the effects of GaN buffer layer quality on the dc characteristics of AlGaN/GaN high electron mobility transistors... Optical diffraction properties of multimicrogratings... Optical and infrared properties of glancing angle deposited nanostructured tungsten films... Controlled Nanopatterning of a Polymerized Ionic Liquid in a Strong Electric Field... Probing Local Bias-Induced Transitions Using Photothermal Excitation Contact Resonance Atomic Force Microscopy and Voltage Sp... Ion transport and softening in a polymerized ionic liquid... All-dielectric metasurface analogue of electromagnetically induced transparency... Exploring Local Electrostatic Effects: implications for piezoresponse force microscopy and triboelectricity... Cavitation on deterministically nanostructured surfaces in contact with an aqueous phase: A small-angle neutron scattering st... The structure of colloidal suspensions in submicron confinements... Characteristics of gate leakage current and breakdown voltage of AlGaN/GaN high electron mobility transistors after postproce... Growth of skyrmionic MnSi nanowires on Si: critical importance of SiO2 layer ... Enhancing the Sensitivity of Label-free Silicon Photonic Biosensors through Increased Probe Molecule Density... Controlled Vapor Phase Growth of Single Crystalline, Two-Dimensional GaSe Crystals with High Photoresponse ... Effect of low dose γ-irradiation on DC performance of circular AlGaN/GaN high electron mobility transistors... Dielectric Meta-Reflectarray for Broadband Linear Polarization Conversion and Optical Vortex Generation ... Pagination First page « First Previous page ‹‹ … Page 4 Current page 5 Page 6 … Next page ›› Last page Last » Key Links Curriculum Vitae ORCID Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Synthesis Section Nanofabrication Research Laboratory Group