Aaron M. Ross
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View article: Time-domain observation of interlayer exciton formation and thermalization in a MoSe2/WSe2 heterostructure
Time-domain observation of interlayer exciton formation and thermalization in a MoSe2/WSe2 heterostructure Open
Vertical heterostructures of transition metal dichalcogenides (TMDs) host interlayer excitons with electrons and holes residing in different layers. With respect to their intralayer counterparts, interlayer excitons feature longer lifetime…
View article: Time-domain observation of interlayer exciton formation and thermalization in a MoSe2/WSe2 heterostructure
Time-domain observation of interlayer exciton formation and thermalization in a MoSe2/WSe2 heterostructure Open
Vertical heterostructures (HS) of transition metal dichalcogenides (TMDs) host interlayer excitons (ILX), with electrons and holes residing in different layers. With respect to their intralayer counterparts, ILX feature much longer lifetim…
View article: Time-domain observation of interlayer exciton formation and thermalization in a MoSe$_2$/WSe$_2$ heterostructure
Time-domain observation of interlayer exciton formation and thermalization in a MoSe$_2$/WSe$_2$ heterostructure Open
Vertical heterostructures (HS) of transition metal dichalcogenides (TMDs) host interlayer excitons (ILX), with electrons and holes residing in different layers. With respect to their intralayer counterparts, ILX feature much longer lifetim…
View article: Plasmon‐Assisted Operando Self‐Healing of Cu<sub>2</sub>O Photocathodes (Adv. Sustainable Syst. 3/2023)
Plasmon‐Assisted Operando Self‐Healing of Cu<sub>2</sub>O Photocathodes (Adv. Sustainable Syst. 3/2023) Open
Argon Plasma Treatment In article 2200397, Teresa Gatti, Francesco Lamberti, and co-workers show how a cuprous oxide surface activated by Ar plasma treatment can promote the hydrogen evolution under light in a typical photelectrochemical e…
View article: Optical Properties and Ultrafast Near‐Infrared Localized Surface Plasmon Dynamics in Naturally p‐Type Digenite Films
Optical Properties and Ultrafast Near‐Infrared Localized Surface Plasmon Dynamics in Naturally p‐Type Digenite Films Open
Copper chalcogenides are materials characterized by intrinsic doping properties, allowing them to display high carrier concentrations due to their defect‐heavy structures, independent of the preparation method. Such high doping enables the…
View article: Near-Infrared Plasmon-Induced Hot Electron Extraction Evidence in an Indium Tin Oxide Nanoparticle/Monolayer Molybdenum Disulfide Heterostructure
Near-Infrared Plasmon-Induced Hot Electron Extraction Evidence in an Indium Tin Oxide Nanoparticle/Monolayer Molybdenum Disulfide Heterostructure Open
In this work, we observe plasmon-induced hot electron extraction in a heterojunction between indium tin oxide nanocrystals and monolayer molybdenum disulfide. We study the sample with ultrafast differential transmission, exciting the sampl…
View article: Optical Properties and Ultrafast Near-Infrared Localized Surface Plasmon Dynamics in Naturally p-Type Digenite Films
Optical Properties and Ultrafast Near-Infrared Localized Surface Plasmon Dynamics in Naturally p-Type Digenite Films Open
Copper chalcogenides are materials characterized by intrinsic doping properties, allowing them to display high carrier concentrations due to their defect-heavy structures, independent of the preparation method. Such high doping enables the…
View article: Near-Infrared plasmon induced hot electron extraction evidence in an indium tin oxide nanoparticle / monolayer molybdenum disulphide heterostructure
Near-Infrared plasmon induced hot electron extraction evidence in an indium tin oxide nanoparticle / monolayer molybdenum disulphide heterostructure Open
In this work, we observe plasmon induced hot electron extraction in a heterojunction between indium tin oxide nanocrystals and monolayer molybdenum disulphide. We study the sample with ultrafast differential transmission exciting the sampl…
View article: Deciphering Photoinduced Charge Transfer Dynamics in a Cross-Linked Graphene–Dye Nanohybrid
Deciphering Photoinduced Charge Transfer Dynamics in a Cross-Linked Graphene–Dye Nanohybrid Open
The search for synthetic materials that mimic natural photosynthesis by converting solar energy into other more useful forms of energy is an ever-growing research endeavor. Graphene-based materials, with their exceptional electronic and op…
View article: Deciphering Photoinduced Charge Transfer Dynamics in a Cross-Linked Graphene–Dye Nanohybrid
Deciphering Photoinduced Charge Transfer Dynamics in a Cross-Linked Graphene–Dye Nanohybrid Open
The search for synthetic materials that mimic natural photosynthesis by converting solar energy into other more useful forms of energy is an ever-growing research endeavor. Graphene-based materials, with their exceptional electronic and op…
View article: Broadly tunable mid-infrared femtosecond pulses directly generated by an optical parametric amplifier
Broadly tunable mid-infrared femtosecond pulses directly generated by an optical parametric amplifier Open
We introduce an optical parametric amplifier, pumped by an amplified femtosecond Yb:KGW laser, which directly generates broadly tunable mid-infrared (MIR) pulses, covering the whole vibrational spectrum from 3 to 10 µm. The avoidance of th…
View article: Near‐Infrared Lasing in Four‐Zigzag Edged Nanographenes by 1D versus 2D Electronic π‐Conjugation
Near‐Infrared Lasing in Four‐Zigzag Edged Nanographenes by 1D versus 2D Electronic π‐Conjugation Open
The search of compounds emitting in the near‐infrared (NIR) has been accelerated owing to their use in biomedical and telecommunications applications. In this regard, nanographenes (NGs) are attractive materials adequate for integration wi…
View article: The impact of bacteria exposure on the plasmonic response of silver nanostructured surfaces
The impact of bacteria exposure on the plasmonic response of silver nanostructured surfaces Open
Silver, in the form of nanostructures, is widely employed as an antimicrobial agent. The origin of the biocidal mechanism has been elucidated in the last decades, originating from silver cation release due to oxidative dissolution followed…
View article: The Impact of Bacteria Exposure on the Plasmonic Response of Silver\n Nanostructured Surfaces
The Impact of Bacteria Exposure on the Plasmonic Response of Silver\n Nanostructured Surfaces Open
Silver, especially in the form of nanostructures, is widely employed as an antimicrobial agent in a large range of commercial products. The origin of the biocidal mechanism has been elucidated in the last decades, and most likely originate…
View article: The Impact of Bacteria Exposure on the Plasmonic Response of Silver\n Nanostructured Surfaces
The Impact of Bacteria Exposure on the Plasmonic Response of Silver\n Nanostructured Surfaces Open
Silver, especially in the form of nanostructures, is widely employed as an\nantimicrobial agent in a large range of commercial products. The origin of the\nbiocidal mechanism has been elucidated in the last decades, and most likely\norigin…
View article: Direct high-resolution resonant Raman scattering measurements of dynamic nuclear spin polarization states of an InAs quantum dot
Direct high-resolution resonant Raman scattering measurements of dynamic nuclear spin polarization states of an InAs quantum dot Open
We report on the direct measurement of the electron spin splitting and the accompanying nuclear Overhauser (OH) field, and thus the underlying nuclear spin polarization (NSP) and fluctuation bandwidth, in a single InAs quantum dot under re…
View article: A Polymer Blend Substrate for Skeletal Muscle Cells Alignment and Photostimulation
A Polymer Blend Substrate for Skeletal Muscle Cells Alignment and Photostimulation Open
Substrate engineering for steering cell growth is a wide and well‐established area of research in the field of modern biotechnology. Here we introduce a micromachining technique to pattern an inert and transparent polymer matrix blended wi…
View article: Modelling photosystem I as a complex interacting network
Modelling photosystem I as a complex interacting network Open
In this paper, we model the excitation energy transfer (EET) of photosystem I (PSI) of the common pea plant Pisum sativum as a complex interacting network. The magnitude of the link energy transfer between nodes/chromophores is computed by…
View article: Dual Amplified Spontaneous Emission and Lasing from Nanographene Films
Dual Amplified Spontaneous Emission and Lasing from Nanographene Films Open
Chemically synthesized zigzag-edged nanographenes (NG) have recently demonstrated great success as the active laser units in solution-processed organic distributed feedback (DFB) lasers. Here, we report the first observation of dual amplif…
View article: Room-temperature continuous-wave upconverting micro- and nanolasing for bio-optofluidics
Room-temperature continuous-wave upconverting micro- and nanolasing for bio-optofluidics Open
Nanolasers that operate under the continuous-wave pump and are robust in diverse environments will make possible compact optoelectronic devices, biomedical imaging, and large-scale quantum photonics. However, current nanolasers require low…
View article: Hybrid plasmonic/photonic crystals for optical detection of bacterial contaminants
Hybrid plasmonic/photonic crystals for optical detection of bacterial contaminants Open
Here, we show that a hybrid plasmonic/photonic crystal consisting of a thin layer of bioactive plasmonic material (i.e. silver) deposited on top a 1D PhC can detect one of the most common bacterial contaminant, namely Escherichia coli. We …
View article: Revealing excited states dynamics in cross-linked covalent hybrids of graphene and diketopyrrolopyrrole oligomers via ultrafast transient absorption spectroscopy
Revealing excited states dynamics in cross-linked covalent hybrids of graphene and diketopyrrolopyrrole oligomers via ultrafast transient absorption spectroscopy Open
We report on ultrafast dynamics in cross-linked covalent hybrids of graphene and diketopyrrolopyrrole (TDPP) oligomers. Comparisons between non-polymerizing (EXG-TDPP) and polymerizing (c-EXG-TDPP) hybrids show that charge/energy transfer …
View article: Integration of bio-responsive silver in 1D photonic crystals: towards the colorimetric detection of bacteria
Integration of bio-responsive silver in 1D photonic crystals: towards the colorimetric detection of bacteria Open
Colorimetric read-out of a silver/1D photonic crystal upon exposure to E. coli.
View article: Optical Spectroscopy of Dynamic Nuclear Spin Polarization in Single InAs Quantum Dots
Optical Spectroscopy of Dynamic Nuclear Spin Polarization in Single InAs Quantum Dots Open
View article: Nonlocal Nuclear Spin Quieting in Quantum Dot Molecules: Optically Induced Extended Two-Electron Spin Coherence Time
Nonlocal Nuclear Spin Quieting in Quantum Dot Molecules: Optically Induced Extended Two-Electron Spin Coherence Time Open
We demonstrate the extension of coherence between all four two-electron spin ground states of an InAs quantum dot molecule (QDM) via nonlocal suppression of nuclear spin fluctuations in two vertically stacked quantum dots (QDs), while opti…