Decoupling Carrier Dynamics and Energy Transport in Ultrafast Near-Field Nanoscopy.

Rundi Yang, Runxuan Li, Brian W Blankenship, Jingang Li, Costas P Grigoropoulos

Abstract read

In one paragraph

Article in Nano letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

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0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Rundi YangLaser Thermal Laboratory, Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.ORCID 0000-0002-2877-939X

Runxuan LiLaser Thermal Laboratory, Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.

Brian W BlankenshipLaser Thermal Laboratory, Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.ORCID 0000-0003-4212-6835

Jingang LiLaser Thermal Laboratory, Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.ORCID 0000-0003-0827-9758

Costas P GrigoropoulosLaser Thermal Laboratory, Department of Mechanical Engineering, University of California, Berkeley, California 94720, United States.ORCID 0000-0002-8505-4037

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ultrafast near-field optical nanoscopy has emerged as a powerful platform to characterize low-dimensional materials. While analytical and numerical models have been established to account for photoexcited carrier dynamics, quantitative evaluation of the associated pulsed laser heating remains elusive. Here, we decouple the photocarrier density and temperature increase in near-field nanoscopy by integrating the two-temperature model (TTM) with finite-difference time-domain (FDTD) simulations. These results reveal that the electron-phonon coupling in a silicon film after femtosecond laser excitation is most pronounced within approximately 3 ps─substantially shorter than the photocarrier decay time scale at tens of picoseconds. Moreover, the coupled TTM-FDTD method indicates that ultrafast laser heating can cause up to a 14% variation in the near-field signal at a 220 μJ/cm

Indexed as

carrier dynamicsFDTDpump−probes-SNOMtwo-temperature modelultrafast laser heating

Identifiers

PMID39805036

DOI10.1021/acs.nanolett.4c05419

PMCPMC11827107

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.