Mohammad Taghinejad
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View article: Acoustic wave modulation of gap plasmon cavities
Acoustic wave modulation of gap plasmon cavities Open
The important role of metallic nanostructures in nanophotonics will expand if ways to electrically manipulate their optical resonances at high speed can be identified. We capitalized on electrically driven surface acoustic waves and the ex…
View article: Ion-Assisted Nanoscale Material Engineering in Atomic Layers
Ion-Assisted Nanoscale Material Engineering in Atomic Layers Open
Achieving deterministic control over the properties of low-dimensional materials with nanoscale precision is a long-sought goal. Mastering this capability has a transformative effect on the design of multifunctional electrical and optical …
View article: Nonresonant Raman control of ferroelectric polarization
Nonresonant Raman control of ferroelectric polarization Open
Important advances have recently been made in the search for materials with complex multi-phase landscapes that host photoinduced metastable collective states with exotic functionalities. In almost all cases so far, the desired phases are …
View article: Ion-Assisted Nanoscale Material Engineering in Atomic Layers
Ion-Assisted Nanoscale Material Engineering in Atomic Layers Open
Achieving deterministic control over the properties of low-dimensional materials with nanoscale precision is a long-sought goal. Mastering this capability has a transformative impact on the design of multifunctional electrical and optical …
View article: Phototransformation of achiral metasurfaces into handedness-selectable transient chiral media
Phototransformation of achiral metasurfaces into handedness-selectable transient chiral media Open
Chirality is a geometric property describing the lack of mirror symmetry. This unique feature enables photonic spin-selectivity in light–matter interaction, which is of great significance in stereochemistry, drug development, quantum optic…
View article: Optical Synthesis of Transient Chirality in Achiral Plasmonic Metasurfaces
Optical Synthesis of Transient Chirality in Achiral Plasmonic Metasurfaces Open
As much as chiral metasurfaces are significant in stereochemistry and polarization control, tunable chiroptical response is important for their dynamic counterparts. A single metasurface device with invertible chiral states can selectively…
View article: Tailored Dispersion of Spectro‐Temporal Dynamics in Hot‐Carrier Plasmonics
Tailored Dispersion of Spectro‐Temporal Dynamics in Hot‐Carrier Plasmonics Open
Ultrafast optical switching in plasmonic platforms relies on the third‐order Kerr nonlinearity, which is tightly linked to the dynamics of hot carriers in nanostructured metals. Although extensively utilized, a fundamental understanding on…
View article: Electrically driven reprogrammable phase-change metasurface reaching 80% efficiency
Electrically driven reprogrammable phase-change metasurface reaching 80% efficiency Open
View article: Dynamic Hybrid Metasurfaces
Dynamic Hybrid Metasurfaces Open
Efficient hybrid plasmonic-photonic metasurfaces that simultaneously take advantage of the potential of both pure metallic and all-dielectric nanoantennas are identified as an emerging technology in flat optics. Nevertheless, postfabricati…
View article: Electrically driven programmable phase-change meta-switch reaching 80% efficiency
Electrically driven programmable phase-change meta-switch reaching 80% efficiency Open
Despite recent advances in active metaoptics, wide dynamic range combined with high-speed reconfigurable solutions is still elusive. Phase-change materials (PCMs) offer a compelling platform for metasurface optical elements, owing to the l…
View article: High-efficiency photoelectrochemical cathodic protection performance of the iron-nitrogen-sulfur-doped TiO<sub>2</sub> nanotube as new efficient photoanodes
High-efficiency photoelectrochemical cathodic protection performance of the iron-nitrogen-sulfur-doped TiO<sub>2</sub> nanotube as new efficient photoanodes Open
Novel iron-nitrogen-sulfur-tridoped titanium dioxide nanotubes (Fe-N-S-TiO 2 NTs) have been synthesized via single step anodization of titanium using potassium ferricyanide, as a suitable additive, in dimethyl sulfoxide (DMSO) electrolyte …
View article: Photocarrier‐Induced Active Control of Second‐Order Optical Nonlinearity in Monolayer MoS<sub>2</sub>
Photocarrier‐Induced Active Control of Second‐Order Optical Nonlinearity in Monolayer MoS<sub>2</sub> Open
Atomically thin transition metal dichalcogenides (TMDs) in their excited states can serve as exceptionally small building blocks for active optical platforms. In this scheme, optical excitation provides a practical approach to control ligh…
View article: Transient Second-Order Nonlinear Media: Breaking the Spatial Symmetry in the Time Domain via Hot-Electron Transfer
Transient Second-Order Nonlinear Media: Breaking the Spatial Symmetry in the Time Domain via Hot-Electron Transfer Open
Second-order optical effects are essential to the active control of light and the generation of new spectral components. The inversion symmetry, however, prevents achieving a bulk χ^{(2)} response, limiting the portfolio of the second-orde…
View article: Metasurfaces for near-eye augmented reality
Metasurfaces for near-eye augmented reality Open
Augmented reality (AR) has the potential to revolutionize the way in which information is presented by overlaying virtual information onto a person's direct view of their real-time surroundings. By placing the display on the surface of the…
View article: Sharp and Tunable Crystal/Fano‐Type Resonances Enabled by Out‐of‐Plane Dipolar Coupling in Plasmonic Nanopatch Arrays
Sharp and Tunable Crystal/Fano‐Type Resonances Enabled by Out‐of‐Plane Dipolar Coupling in Plasmonic Nanopatch Arrays Open
Tuning resonance lineshapes of plasmonic structures is essential to create customized media with compelling optical properties for optimized light–matter interactions. The diversity of available metals and the variety of design architectur…
View article: Strain relaxation via formation of cracks in compositionally modulated two-dimensional semiconductor alloys
Strain relaxation via formation of cracks in compositionally modulated two-dimensional semiconductor alloys Open
Composition modulation of two-dimensional transition-metal dichalcogenides (TMDs) has introduced an enticing prospect for the synthesis of Van der Waals alloys and lateral heterostructures with tunable optoelectronic properties. Phenomenol…
View article: Hot‐Electron‐Assisted Femtosecond All‐Optical Modulation in Plasmonics
Hot‐Electron‐Assisted Femtosecond All‐Optical Modulation in Plasmonics Open
The optical Kerr nonlinearity of plasmonic metals provides enticing prospects for developing reconfigurable and ultracompact all‐optical modulators. In nanostructured metals, the coherent coupling of light energy to plasmon resonances crea…
View article: Nonlinear Raman Shift Induced by Exciton-to-Trion Transformation in Suspended Trilayer MoS2
Nonlinear Raman Shift Induced by Exciton-to-Trion Transformation in Suspended Trilayer MoS2 Open
Layered two-dimensional (2D) semiconductors such as molybdenum disulfide (MoS2) have recently attracted remarkable attention because of their unique physical properties. Here, we use photoluminescence (PL) and Raman spectroscopy to study t…