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Nanomaterials
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Advance in Nanothermometry
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Advance in Nanothermometry

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 2915

Special Issue Editor

Dr. Joan J. Carvajal

E-Mail Website
Guest Editor
Physics and Crystallography of Materials and Nanomaterials (FiCMA-FiCNA) and EMaS, Universitat Rovira i Virgili (URV), Marcel·lí Domingo 1, 43007 Tarragona, Spain
Interests: nanothermometry; non-invasive thermometers; non-contact thermometry; high resolution thermometry; temperature sensors; nanoscale temperature detection; multifunctional thermometry platforms; multimode nanothermometers; self-assessed heat conversion agents; reliable thermal feedback

Special Issue Information

Dear Colleagues,

Accurate temperature knowledge is essential for control and understanding of physical, chemical and biological processes in many areas of industry, such as metallurgy, glass manufacturing, material modeling, dairy products, food manipulation and testing. This becomes even more essential in biomedical studies, since a variety of cellular events, such as cell division and metabolism, as well as cellular pathogenesis of cancer and other diseases, are marked by intracellular temperature changes. In these applications non-contact and non-invasive precise thermometry becomes a critical instrument, especially when thermal sensing and imaging with high thermal and spatial resolutions (below 1 ºC and in the submicrometer or nanometer scales, respectively) are required. At these scales, conventional thermometry methods are ineffective.

We invite contributors to this special issue “Advance in Nanothermometry” in Nanomaterials to submit their latest research in the field of nanothermometry, performed by any of the multiple techniques developed for this purpose. This accounts for luminescent and non-luminescent thermometers working at these low dimensional scales, including but not limited to organic dyes, QDs, lanthanide thermal probes, scanning thermal microscopy, carbon nanotube thermometry and biomaterials thermometry, to name a few. Also welcome are contributions towards the development multifunctional platforms in which thermometry is a major goal.

Dr. Joan J. Carvajal
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanothermometry
  • non-invasive thermometers
  • non-contact thermometry
  • high resolution thermometry
  • temperature sensors
  • nanoscale temperature detection
  • multifunctional thermometry platforms
  • multimode nanothermometers
  • self assessed heat conversion agents
  • reliable thermal feedback

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Published Papers (2 papers)

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Research

13 pages, 13632 KiB  
Article
A Temperature Imaging Method for Multi-Chip High Power LEDs Based on the Magnetic Nanoparticle Thermometer
by Zhongzhou Du, Bin Hu, Na Ye, Yi Sun, Haochen Zhang and Shi Bai
Nanomaterials 2022, 12(19), 3280; https://doi.org/10.3390/nano12193280 - 21 Sep 2022
Cited by 2 | Viewed by 1257
Abstract
In this study, a temperature imaging method based on a magnetic nanoparticle thermometer is proposed and evaluated. We first constructed a new model for finding the single temperature of magnetic nanoparticles with core size distribution. Specifically, we employed an air-core coil as a [...] Read more.
In this study, a temperature imaging method based on a magnetic nanoparticle thermometer is proposed and evaluated. We first constructed a new model for finding the single temperature of magnetic nanoparticles with core size distribution. Specifically, we employed an air-core coil as a magnetic probe, which measured the magnetization of magnetic nanoparticles (MNPs). We then constructed a relation between the output signal of an air-core coil in the direction of the geometric center axis and the magnetization of the MNPs in a 2-D imaging area based on the magnetic dipole theory. Once this was achieved, we established a temperature imaging model by utilizing Green function as the convolution kernel, which describes the distance relationship between MNPs and the geometric center axis of the air-cored coil. After this, we calculated the harmonic distribution by a deconvolution algorithm and determined the temperature of the MNPs at different positions based on the model of harmonic amplitude and temperature, resulting in the 2-D temperature distribution. The simulation proved that the model and method of 2-D temperature distribution measurement could theoretically be acceptable. In the experiment, the 2-D temperature distribution of multi-chip power LEDs was measured accurately by a homemade system, thus demonstrating the feasibility of the proposed method for temperature imaging. This method is expected to provide a new solution for measuring the internal temperature distribution of opaque objects under extreme conditions. Full article
(This article belongs to the Special Issue Advance in Nanothermometry)
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9 pages, 929 KiB  
Article
Influence of Pumping Regime on Temperature Resolution in Nanothermometry
by Jonas Thiem, Axel Ruehl and Detlev Ristau
Nanomaterials 2021, 11(7), 1782; https://doi.org/10.3390/nano11071782 - 9 Jul 2021
Cited by 1 | Viewed by 2211
Abstract
In recent years, optical nanothermometers have seen huge improvements in terms of precision as well as versatility, and several research efforts have been directed at adapting novel active materials or further optimizing the temperature sensitivity. The signal-to-noise ratio of the emission lines is [...] Read more.
In recent years, optical nanothermometers have seen huge improvements in terms of precision as well as versatility, and several research efforts have been directed at adapting novel active materials or further optimizing the temperature sensitivity. The signal-to-noise ratio of the emission lines is commonly seen as the only limitation regarding high precision measurements. The role of re-absorption caused by a population of lower energy levels, however, has so far been neglected as a potential bottleneck for both high resolution and material selection. In this work, we conduct a study of the time dependent evolution of population densities in different luminescence nanothermometer classes under the commonly used pulsed excitation scheme. It is shown that the population of lower energy levels varies when the pump source fluctuates in terms of power and pulse duration. This leads to a significant degradation in temperature resolution, with limiting values of 0.5 K for common systems. Our study on the error margin indicates that either short pulsed or continuous excitation should be preferred for high precision measurements. Additionally, we derive conversion factors, enabling the re-calibration of currently available intensity ratio measurements to the steady state regime, thus facilitating the transition from pulse regimes to continuous excitation. Full article
(This article belongs to the Special Issue Advance in Nanothermometry)
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