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Applied Sciences
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New Materials for Nanophotonics
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New Materials for Nanophotonics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Applied Physics General".

Deadline for manuscript submissions: closed (15 October 2021) | Viewed by 7315

Special Issue Editor

Prof. Dr. Sangin Kim

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, Ajou University, Suwon 16499, Korea
Interests: nanophotonics

Special Issue Information

Dear Colleagues,

The MDPI journal of Applied Sciences invites manuscript submissions in the topic of “New Materials for Nanophotonics”. Nanophotonics has played an important role in material research as well as in photonic devices. In nanophotonics, artificial structures are used to modulate the flow of light, enhance the light–matter interaction, or induce exotic electromagnetic properties. At the same time, new materials can add novel functionalities to nanophotonics, just like graphene enables tunability in plasmonics and metamaterials. This Special Issue focuses on the recent progress of materials and devices based on nanophotonics.

Topics of interest include (but not limited to) the following:

- Tunability of nanophotonic devices

- Low-dimensional materials for photonic devices

- Nonlinear materials for THz and mid-IR ranges

- Flexible photonic devices

- Materials for photonic sensors

- Materials for photon-based quantum computing

Prof. Dr. Sangin Kim
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. Applied Sciences 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 2400 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.

Published Papers (3 papers)

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Research

15 pages, 3831 KiB  
Article
Research on Measuring Thermal Conductivity of Quartz and Sapphire Glass Using Rear-Side Photothermal Deflection Method
by Gwantaek Kim, Donghyuk Kim, Sukkyung Kang, Jaisuk Yoo and Hyunjung Kim
Appl. Sci. 2021, 11(4), 1535; https://doi.org/10.3390/app11041535 - 8 Feb 2021
Cited by 5 | Viewed by 2060
Abstract
As the display industry continues to advance, various new materials are being developed for utilizing microtechnology and nanotechnology in display panels. Among these, transparent materials have been widely applied to the internal wiring of displays and flexible substrates, owing to their high optical [...] Read more.
As the display industry continues to advance, various new materials are being developed for utilizing microtechnology and nanotechnology in display panels. Among these, transparent materials have been widely applied to the internal wiring of displays and flexible substrates, owing to their high optical transmittance, isotropy, and anisotropy. Thus, measurement of the thermophysical properties of various transparent materials is important. This study measured thermal conductivity by selecting quartz, a transparent isotropic material, and sapphire glass, a transparent anisotropic material, as measurement target materials using a rear-side photothermal deflection method. Measurements were made via a three-dimensional unsteady heat conduction equation, to which complex transformation was applied and numerically analyzed using COMSOL Multiphysics. Phase delays for a pump beam and a probe beam for a relative position were derived through a deflection analysis. From the derived phase delays between the numerical analysis and experimental result with optical alignment, the absolute and relative errors of quartz were appropriately confirmed to be 0.069 W/m-K and 5%, respectively, while those of the sapphire glass were likewise confirmed to be 0.55 W/m-K and 1.5%, respectively. Full article
(This article belongs to the Special Issue New Materials for Nanophotonics)
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18 pages, 20509 KiB  
Article
Numerical Study on Factors Affecting the Induction of Apoptotic Temperatures of Tumor in the Multi-Layer Skin Structure Using Monte Carlo Method
by Donghyuk Kim, Sukkyung Kang and Hyunjung Kim
Appl. Sci. 2021, 11(3), 1103; https://doi.org/10.3390/app11031103 - 25 Jan 2021
Cited by 2 | Viewed by 1686
Abstract
The incidence of skin cancer is increasing with the recent increase in UV exposure. The treatment of skin cancer generally proceeds through an excision of the tumor area, which causes bleeding into the affected area and surrounding tissues, and there is a possibility [...] Read more.
The incidence of skin cancer is increasing with the recent increase in UV exposure. The treatment of skin cancer generally proceeds through an excision of the tumor area, which causes bleeding into the affected area and surrounding tissues, and there is a possibility that secondary infection may occur. Photothermal therapy is drawing attention as an alternative treatment to overcome this limitation. In this study, a numerical analysis was performed on skin cancer tumors located between the reticular dermis and the skin surface by applying the Monte Carlo method. The numerical analysis derives a quantitative correlation using an effective apoptosis ratio with respect to the intensity of the laser that produces the optimal photothermal therapy effect and the volume fraction of gold nanorods (GNRs) injected into a tumor. Through this study, it is confirmed that the optimal treatment effect exists for the depth and length of the various tumors, the intensity of the laser, and the volume fraction of GNRs to minimize the thermal damage to the surrounding normal tissues while maximizing the apoptosis in the tumor. It is expected that it can be used as an optimal condition for better treatment while performing photothermal therapy in the future. Full article
(This article belongs to the Special Issue New Materials for Nanophotonics)
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11 pages, 2807 KiB  
Article
High-Efficiency All-Dielectric Metasurfaces for the Generation and Detection of Focused Optical Vortex for the Ultraviolet Domain
by Ziheng Zhang, Tong Li, Xiaofei Jiao, Guofeng Song and Yun Xu
Appl. Sci. 2020, 10(16), 5716; https://doi.org/10.3390/app10165716 - 18 Aug 2020
Cited by 9 | Viewed by 3051
Abstract
The optical vortex (OV) has drawn considerable attention owing to its tremendous advanced applications, such as optical communication, quantum entanglement, and on-chip detectors. However, traditional OV generators suffer from a bulky configuration and limited performance, especially in the ultraviolet range. In this paper, [...] Read more.
The optical vortex (OV) has drawn considerable attention owing to its tremendous advanced applications, such as optical communication, quantum entanglement, and on-chip detectors. However, traditional OV generators suffer from a bulky configuration and limited performance, especially in the ultraviolet range. In this paper, we utilize a large bandgap dielectric material, niobium pentoxide (Nb2O5), to construct ultra-thin and compact transmission-type metasurfaces to generate and detect the OV at a wavelength of 355 nm. The meta-atom, which operates as a miniature half-wave plate and demonstrates a large tolerance to fabrication error, manipulates the phase of an incident right-handed circular polarized wave with high cross-polarized conversion efficiency (around 86.9%). The phase delay of π between the orthogonal electric field component is attributed to the anti-parallel magnetic dipoles induced in the nanobar. Besides, focused vortex generation (topological charge l from 1 to 3) and multichannel detection (l from −2 to 2) are demonstrated with high efficiency, up to 79.2%. We envision that our devices of high flexibility may have potential applications in high-performance micron-scale integrated ultraviolet nanophotonics and meta-optics. Full article
(This article belongs to the Special Issue New Materials for Nanophotonics)
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