Search Results - "Govorov, Alexander O."

Plasmon-Induced Circular Dichroism of a Chiral Molecule in the Vicinity of Metal Nanocrystals. Application to Various Geometries by Govorov, Alexander O

“…The Coulombic interaction between a chiral molecule and a nonchiral metal nanocrystal creates new plasmonic lines in a circular dichroism (CD) spectrum. In…”
Get full text

Optical Generation of Hot Plasmonic Carriers in Metal Nanocrystals: The Effects of Shape and Field Enhancement by Zhang, Hui, Govorov, Alexander O

“…We investigate theoretically photogeneration of excited carriers in plasmonic nanocrystals. The theory is based on the solution of the quantum equation of…”
Get full text

Plasmonic Circular Dichroism of Chiral Metal Nanoparticle Assemblies by Fan, Zhiyuan, Govorov, Alexander O

“…We describe from the theoretical point of view a plasmonic mechanism of optical activity in chiral complexes composed of metal nanoparticles (NPs). In our…”
Get full text

Chiral Nanocrystals: Plasmonic Spectra and Circular Dichroism by Fan, Zhiyuan, Govorov, Alexander O

“…The life is inherently chiral. Consequently, chirality plays a pivotal role in biochemistry and the evolution of life itself. Optical manifestation of…”
Get full text

A light-driven three-dimensional plasmonic nanosystem that translates molecular motion into reversible chiroptical function by Kuzyk, Anton, Yang, Yangyang, Duan, Xiaoyang, Stoll, Simon, Govorov, Alexander O., Sugiyama, Hiroshi, Endo, Masayuki, Liu, Na

“…Nature has developed striking light-powered proteins such as bacteriorhodopsin, which can convert light energy into conformational changes for biological…”
Get full text

Photothermal Circular Dichroism Induced by Plasmon Resonances in Chiral Metamaterial Absorbers and Bolometers by Kong, Xiang-Tian, Khosravi Khorashad, Larousse, Wang, Zhiming, Govorov, Alexander O

“…Chiral photochemistry remains a challenge because of the very small asymmetry in the chiro-optical absorption of molecular species. However, we think that the…”
Get full text

Theory of Chiral Plasmonic Nanostructures Comprising Metal Nanocrystals and Chiral Molecular Media by Govorov, Alexander O., Fan, Zhiyuan

“…Plasmonic nanocrystals strongly interact with chiral molecular shells through electric and magnetic fields and in this way acquire new chiro‐optical…”
Get full text

Broadband Metamaterial Absorbers by Yu, Peng, Besteiro, Lucas V., Huang, Yongjun, Wu, Jiang, Fu, Lan, Tan, Hark H., Jagadish, Chennupati, Wiederrecht, Gary P., Govorov, Alexander O., Wang, Zhiming

“…The recent rise of metamaterials opens new opportunities for absorbers due to their designed electrodynamic properties and effects, allowing the creation of…”
Get full text

Understanding Hot-Electron Generation and Plasmon Relaxation in Metal Nanocrystals: Quantum and Classical Mechanisms by Besteiro, Lucas V, Kong, Xiang-Tian, Wang, Zhiming, Hartland, Gregory, Govorov, Alexander O

“…Generation of energetic (hot) electrons is an intrinsic property of any plasmonic nanostructure under illumination. Simultaneously, a striking advantage of…”
Get full text

Plasmonic Circular Dichroism of Peptide-Functionalized Gold Nanoparticles by Slocik, Joseph M, Govorov, Alexander O, Naik, Rajesh R

“…Nature is remarkable at tailoring the chirality of different biomolecules to suit specific functions. Chiral molecules can impart optical activity to achiral…”
Get full text

Hotspot-mediated non-dissipative and ultrafast plasmon passage by Roller, Eva-Maria, Besteiro, Lucas V., Pupp, Claudia, Khorashad, Larousse Khosravi, Govorov, Alexander O., Liedl, Tim

“…Strong plasmonic hotspots can facilitate ultrafast energy transfer between metallic nanoparticles with almost no energy loss. Plasmonic nanoparticles hold…”
Get full text

Near Infrared, Highly Efficient Luminescent Solar Concentrators by Zhou, Yufeng, Benetti, Daniele, Fan, Zhiyuan, Zhao, Haiguang, Ma, Dongling, Govorov, Alexander O., Vomiero, Alberto, Rosei, Federico

“…The fabrication of a low reabsorption emission loss, high efficient luminescent solar concentrator (LSC) is demonstrated by embedding near infrared (NIR)…”
Get full text

Long- and short-ranged chiral interactions in DNA-assembled plasmonic chains by Martens, Kevin, Binkowski, Felix, Nguyen, Linh, Hu, Li, Govorov, Alexander O., Burger, Sven, Liedl, Tim

“…Circular dichroism (CD) has long been used to trace chiral molecular states and changes of protein configurations. In recent years, chiral plasmonic…”
Get full text

What’s so Hot about Electrons in Metal Nanoparticles? by Hartland, Gregory V, Besteiro, Lucas V, Johns, Paul, Govorov, Alexander O

“…Metal nanoparticles are excellent light absorbers. The absorption processes create highly excited electron–hole pairs, and recently there has been interest in…”
Get full text

Theory of Circular Dichroism of Nanomaterials Comprising Chiral Molecules and Nanocrystals: Plasmon Enhancement, Dipole Interactions, and Dielectric Effects by Govorov, Alexander O, Fan, Zhiyuan, Hernandez, Pedro, Slocik, Joseph M, Naik, Rajesh R

“…Our calculations show that a nonchiral nanocrystal is able to dramatically change the circular dichroism (CD) of a chiral molecule when the nanocrystal and…”
Get full text

Cooperative expression of atomic chirality in inorganic nanostructures by Wang, Peng-peng, Yu, Shang-Jie, Govorov, Alexander O, Ouyang, Min

“…Cooperative chirality phenomena extensively exist in biomolecular and organic systems via intra- and inter-molecular interactions, but study of inorganic…”
Get full text

Chiral Plasmonic Nanostructures Enabled by Bottom-Up Approaches by Urban, Maximilian J, Shen, Chenqi, Kong, Xiang-Tian, Zhu, Chenggan, Govorov, Alexander O, Wang, Qiangbin, Hentschel, Mario, Liu, Na

“…We present a comprehensive review of recent developments in the field of chiral plasmonics. Significant advances have been made recently in understanding the…”
Get full text

Circular Dichroism of Chiral Molecules in DNA-Assembled Plasmonic Hotspots by Kneer, Luisa M, Roller, Eva-Maria, Besteiro, Lucas V, Schreiber, Robert, Govorov, Alexander O, Liedl, Tim

“…The chiral state of a molecule plays a crucial role in molecular recognition and biochemical reactions. Because of this and owing to the fact that most modern…”
Get full text

Picosecond energy transfer and multiexciton transfer outpaces Auger recombination in binary CdSe nanoplatelet solids by Rowland, Clare E., Fedin, Igor, Zhang, Hui, Gray, Stephen K., Govorov, Alexander O., Talapin, Dmitri V., Schaller, Richard D.

“…Fast fluorescence resonance energy transfer between CdSe nanoplatelets on a picosecond timescale is measured. This process is faster than Auger recombination…”
Get full text

Experimental and Theoretical Studies of Light-to-Heat Conversion and Collective Heating Effects in Metal Nanoparticle Solutions by Richardson, Hugh H, Carlson, Michael T, Tandler, Peter J, Hernandez, Pedro, Govorov, Alexander O

“…We perform a set of experiments on photoheating in a water droplet containing gold nanoparticles (NPs). Using photocalorimetric methods, we determine…”
Get full text