Employing Cathodoluminescence for Nanothermometry and Thermal Transport Measurements in Semiconductor Nanowires

Mauser, Kelly W.; Solà-Garcia, Magdalena; Liebtrau, Matthias; Damilano, B.; Coulon, Pierre-Marie; Vézian, S.; Shields, P. A.; Meuret, Sophie; Polman, A.

doi:10.1021/acsnano.1c00850

Cited by 17 publications

(19 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The direct monitoring and quantification of the thermalization process close to the surface of bundled AuNR arrays are discussed next. There are many elegant and reliable methodologies reported in the literature to measure the surface temperature of thermoplasmonic nanostructures. − We envisaged using the property of thermochromism to monitor the surface temperature of bundled AuNR arrays because an attractive visual color change will serve as the read out in this case (Figure ). Moreover, the proposed thermal quantification technique based on thermochromism has multiple advantages over other quantification techniques.…”

Section: Resultsmentioning

confidence: 99%

“…The idea of converting light-to-heat energy using plasmonic architectures has gained immense scientific importance due to its direct technological relevance in energy and medical research. − The ability to quantify as well as utilize the heat generated in plasmonic structures in a convenient way is essential to successfully regulate its impact on various plasmonic processes. − Here, we have explored the phenomenon of thermochromism as a simple and reliable tool to quantify the practically usable thermoplasmonic heat close to the surface of nanostructures. For this, we have fabricated thermoplasmonic heaters based on configurable one-dimensional gold nanorod (AuNR) arrays and performed attractive photothermal transformations in solution (both aqueous and organic) as well as in solid states.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Insights into the Utilization and Quantification of Thermoplasmonic Properties in Gold Nanorod Arrays

et al. 2022

View full text Add to dashboard Cite

Doing chemistry with plasmons is rewarding but is often challenged by the competition between the intriguing relaxation processes in plasmonic materials. One of the currently debated and prominent examples of this is the interference of the thermalization process in bringing out different physicochemical transformations. We present here insights into the utilization and quantification of thermoplasmonic properties in configurable arrays of gold nanorods (AuNRs), which will help in accomplishing the desired outcome from the thermalization process. The plasmonic heat generated in AuNR arrays is used to perform versatile and useful photothermal processes, such as polymerization, solar-vapor generation, Diels−Alder reaction, and crystal-to-crystal transformation. The unprecedented use of thermochromism in quantifying the thermalization process shows that the surface of AuNR arrays can heat up to ∼250 °C within ∼15 min of irradiation, which is independently validated with standard infrared-based thermometric imaging studies. The plasmonic heat reported by the thermochromic studies is the lower limit corresponding to the phase change temperature of the thermochromic molecule, and the actual surface temperature of bundled AuNR arrays could be higher. The choice of reaction conditions is crucial for the effective utilization as well as dissipation of thermoplasmonic heat. The maximum impact of surface temperature was observed when substrates were adsorbed onto the AuNR arrays, whereas the influence of thermoplasmonic heat was minimum when the experiments were performed in a solution state. The insights provided here will have far-reaching implications in the emerging area of plasmonically powered processes, especially in plasmonic photocatalysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Insights into the Utilization and Quantification of Thermoplasmonic Properties in Gold Nanorod Arrays

et al. 2022

View full text Add to dashboard Cite

show abstract

“…202 Inspired by the early days of radio, it has been shown that a nanoscopic dipole Herzian antenna acts as an efficient emitter of visible light when an electron beam is injected in the dipole gap. 187 Thermal measurements can also be performed with CL, such as nanoscale thermometry and thermal transport measurements both in low current conditions (where sample heating is avoided) and higher current conditions 203 (where electron beam induced heating is present). Other electron-beam induced effects such as phase transitions in gallium nanoparticles at picojoule excitation energies have also been observed.…”

Section: Cathodoluminescence Spectroscopy and Polarimetry Techniquesmentioning

confidence: 99%

Free-electron-light interactions in nanophotonics

Roques‐Carmes¹,

Kooi²,

Yang³

et al. 2022

Preprint

View full text Add to dashboard Cite

When impinging on optical structures or passing in their vicinity, free electrons can spontaneously emit electromagnetic radiation, a phenomenon generally known as cathodoluminescence. Free-electron radiation comes in many guises: Cherenkov, transition, and Smith-Purcell radiation, but also electron scintillation, commonly referred to as incoherent cathodoluminescence. While those effects have been at the heart of many fundamental discoveries and technological developments in high-energy physics in the past century, their recent demonstration in photonic and nanophotonic systems has attracted a lot of attention. Those developments arose from predictions that exploit nanophotonics for novel radiation regimes, now becoming accessible thanks to advances in nanofabrication. In general, the proper design of nanophotonic structures can enable shaping, control, and enhancement of free-electron radiation, for any of the above-mentioned effects. Free-electron radiation in nanophotonics opens the way to promising applications, such as widely-tunable integrated light sources from x-ray to THz frequencies, miniaturized particle accelerators, and highly sensitive high-energy particle detectors. Here, we review the emerging field of free-electron radiation in nanophotonics. We first present a general, unified framework to describe free-electron light-matter interaction in arbitrary nanophotonic systems. We then show how this framework sheds light on the physical underpinnings of many methods in the field used to control and enhance free-electron radiation. Namely, the framework points to the central role played by the photonic eigenmodes in controlling the output properties of free-electron radiation (e.g., frequency, directionality, and polarization). We then review experimental techniques to characterize free-electron radiation in scanning and transmission electron microscopes, which have emerged as the central platforms for experimental realization of the phenomena described in this Review. We further discuss various experimental methods to control and extract spectral, angular, and polarization-resolved information on free-electron radiation. We conclude this Review by outlining novel directions for this field, including ultrafast and quantum effects in free-electron radiation, tunable short-wavelength emitters in the ultraviolet and soft x-ray regimes, and free-electron radiation from topological states in photonic crystals.

show abstract

“…to map the local electric fields with a nanoscale resolution. [10,11,37,38,41,42,50,[60][61][62][63][64][65][66] We shall point out that far-field optical measurements are less adapted for characterizing these structures as local effects and spectral resonances are averaged resulting in a broad spectral response.…”

Section: Introductionmentioning

confidence: 99%

Nanoscopy of Aluminum Plasmonic Cavities by Cathodoluminescence and Second Harmonic Generation

Zar

Ron

Shavit

et al. 2022

Advanced Photonics Research

View full text Add to dashboard Cite

Herein, centrosymmetric aluminum plasmonic structures composed of triangular cavities are studied and their long‐range coupling by cathodoluminescence nanoscopy are visualized. Four different plasmonic structures containing the same subunit are studied. The plasmonic modes of the individual triangular subunits are localized at the triangle sides rather than at the vertices, in agreement with other studies. Yet, upon strong interaction between the cavities, a redistribution of the electromagnetic field is observed such that it delocalizes around the cavities in the form of a contour, providing a mode enhancement and a pronounced nonlinear response as observed by second harmonic generation. Comparison between plasmonic structures made of either silver or aluminum reveals that the metal dielectric function plays an important role in the interaction between the cavities. This work provides a rationale for designing plasmonic structures with enhanced nonlinear activity.

show abstract

Employing Cathodoluminescence for Nanothermometry and Thermal Transport Measurements in Semiconductor Nanowires

Cited by 17 publications

References 70 publications

Insights into the Utilization and Quantification of Thermoplasmonic Properties in Gold Nanorod Arrays

Insights into the Utilization and Quantification of Thermoplasmonic Properties in Gold Nanorod Arrays

Free-electron-light interactions in nanophotonics

Nanoscopy of Aluminum Plasmonic Cavities by Cathodoluminescence and Second Harmonic Generation

Contact Info

Product

Resources

About