Research Focus:
We focus in studying nanomaterials and functional nano architectures. Design and synthesis of hybrid nanostructures for photocatalysis, sensing, optical applications, and energy harvesting. Development of new surface chemistries, synthesis and surface modification of Hybrid nanostructures, ex-situ doping of nanostructures, nanostructure array assembly. Our work include synthesis and comprehensive characterization of complex nanosystems by application of analytical methods.
Our research interests are focused on several directions:
Bottom-up synthesis and assembly of nano architectures
New bottom-up synthesis concepts enabling the production of new semiconducting and hybrid metal-semiconducting nanosystems with controlled dimensions and composition. Our research focuses on utilizing non-lithographic methods for symmetry breaking and tailoring the structural details of complex nanosystems featuring unique optical and electronic properties utilized in chemical sensing, plasmonics, and more.
Hybrid Nanosystems enabling electrical and optical sensing
We develop new methods utilizing vapor phase and condensed phase chemistry for the synthesis of new nanoscale hybrid materials with unique physical properties. Specifically, the formation of hybrid nanomaterials consisting of inorganic and organic parts that are well suited for sensing applications. We study the reactivity, optical, plasmonic, and electronic properties of the Hybrid Nanosystems.
Catalytic properties of nanostructure arrays
Nanomaterials exhibit unique catalytic properties that are very different from the bulk material properties. The distinct reactivity at the nanoscale enables new pathways for designing novel materials with tailored chemical reactivity. Our research focuses on the study of surface interactions at nanostructure interfaces in the context of photo-catalysis and electro-catalysis.
Development of advanced nanocomposite materials
We develop novel gas-phase and condensed phase methods for achieving high performance carbon-based nano composites used in the car and aerospace industries. We focus on both synthesis and advanced characterization of the nanocomposite materials.
Selected Publications
1-D Metal Nanobead Arrays within Encapsulated Nanowires via a Red-Ox-Induced Dewetting: Mechanism Study by Atom-Probe Tomography. Zhiyuan Sun, Avra Tzaguy, Ori Hazut, Lincoln J. Lauhon, Roie Yerushalmi, and David N. Seidman. Nano Lett., 2017, 17 (12), pp 7478–7486. DOI: 10.1021/acs.nanolett.7b03391
Self-formed nanogap junctions for electronic detection and characterization of molecules and quantum dots. Amir Ziv, Avra Tzaguy, Ori Hazut, Shira Yochelis, Roie Yerushalmi and Yossi Paltiel. RSC Adv., 2017, 7, 25861. DOI: 10.1039/C7RA04600F
Direct Dopant Patterning by a Remote Monolayer Doping Enabled by a Monolayer Fragmentation Study. Ori Hazut and Roie Yerushalmi. Langmuir, 2017, 33 (22), 5371–5377. DOI: 10.1021/acs.langmuir.7b01085
Semiconductor-Metal Nano-Floret Hybrid Structures by Self-Processing Synthesis. Ori Hazut, Sharon Waichman, Thangavel Subramani, Debabrata Sarkar, Sthitaprajna Dash, Teresa Roncal-Herrero, Roland Kroger, and Roie Yerushalmi. J. Am. Chem. Soc., 2016, 138 (12), 40794086. DOI: 10.1021/jacs.5b12667
Sustainable photocatalytic production of hydrogen peroxide from water and molecular oxygen. Niv Kaynan, Binyamin Adler Berke, Ori Hazut, and Roie Yerushalmi. J. Mater. Chem. A, 2014, 2, 13822-13826. DOI:10.1039/C4TA03004D