255 citations · 422 across the 9 of their papers we have counts for
9 papers
Plasmonic Janus particles: A perspective on optical manipulation and biomedical applications
Alemayehu Nana Koya, Anastasiia Sapunova, Nageswar Reddy Sanamreddy +8
The compositional asymmetry of Janus micro- and nanoparticles gives unprecedented opportunities to manipulate such composite particles with different stimuli to achieve enhanced op…
Theoretical insights into charge transfer plasmon lifetime
Alemayehu Nana Koya, Longnan Li, Wei Li
Understanding the spectral and temporal dynamics of charge transfer plasmon resonances that emerge in conductively connected plasmonic nanoparticles is crucial for exploiting their…
Tunable plasmonic properties of spatially overlapping asymmetric nanoparticle dimers
Merneh Mandado Mana, Bereket Dalga Dana, Alemayehu Nana Koya +2
In this work, the plasmonic properties of nanoparticle dimers with optical responses over a wide spectral range have been investigated by varying the inter-particle gap, dimer geom…
Nanoporous Metals: From Plasmonic Properties to Applications in Enhanced Spectroscopy and Photocatalysis
Alemayehu Nana Koya, Xiangchao Zhu, Nareg Ohannesian +6
The field of plasmonics is capable of enabling interesting applications in the different wavelength ranges, spanning from the ultraviolet up to the infrared. The choice of plasmoni…
Resonant optical trapping of Janus nanoparticles in plasmonic nanoaperture
Alemayehu Nana Koya, Longnan Li, Wei Li
Controlled trapping of light absorbing nanoparticles with low-power optical tweezers is crucial for remote manipulation of small objects. This study takes advantage of the synerget…
Hybrid plasmonic modes for enhanced refractive index sensing
Bereket Dalga Dana, Ji Boyu, Jingquan Lin +3
Compared to single nanoparticles, strongly coupled plasmonic nanoparticles provide attractive advantages owing to their ability to exhibit multiple resonances with unique spectral…
Multifunctional Charge Transfer Plasmon Sensors
Alemayehu Nana Koya, Wei Li
Charge transfer plasmon (CTP) modes arise when metallic nanoparticles are connected by a conductive junction. These ultatunable plasmonic modes can be actively tuned and broadly mo…
Advances in ultrafast plasmonics
Alemayehu Nana Koya, Marco Romanelli, Joel Kuttruff +22
In the past twenty years, we have reached a broad understanding of many light-driven phenomena in nanoscale systems. The temporal dynamics of the excited states are instead quite c…
Photoinduced Temperature Gradients in Sub-wavelength Plasmonic Structures: The Thermoplasmonics of Nanocones
Joao Cunha, Tian-Long Guo, Alemayehu Nana Koya +5
Plasmonic structures are renowned for their capability to efficiently convert light into heat at the nanoscale. However, despite the possibility to generate deep sub-wavelength ele…