Laser–Nanostructure Interactions: From Fundamentals to Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanofabrication and Nanomanufacturing".

Deadline for manuscript submissions: closed (17 October 2025) | Viewed by 612

Special Issue Editor


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Guest Editor
School of Science, Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China
Interests: photonics; optoelectronic devices; nanostructures; two-dimensional materials; semiconductors

Special Issue Information

Dear Colleagues,

Lasers have become indispensable in nanotechnology, enabling precise control and manipulation of nanostructures, which has driven significant advancements across various scientific and engineering disciplines. Notably, pulsed fiber lasers utilizing two-dimensional materials as saturable absorbers have revolutionized the field. These lasers offer high peak power and narrow pulse widths, making them crucial for precision applications, with materials like graphene and transition metal dichalcogenides showing enhanced performance, leading to broader uses in telecommunications and materials processing.

Furthermore, lasers play a pivotal role in nanostructured light emitters, such as semiconductor nanostructures like quantum dots and quantum dashes, which are vital for high-performance photonic devices. The unique quantum phenomena at the nanoscale, facilitated by lasers, enable applications in quantum information systems and integrated photonic technologies.

This Special Issue aims to provide a comprehensive platform for researchers, scientists, and engineers to share their latest findings on laser–nanostructure interactions. We welcome the submission of contributions in the form of original research articles, reviews, and technical notes covering topics from fundamental theories to practical applications in photonics, catalysis, and biosensing. Ultimately, we hope that this Special Issue will foster collaboration and advance the field of nanotechnology.

Dr. Shuai Guo
Guest Editor

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Keywords

  • laser interactions
  • nanostructures
  • two-dimensional materials
  • photonic devices

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Published Papers (1 paper)

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Research

10 pages, 1407 KB  
Article
Sensitive Displacement Sensor Based on a Flexible Grating Random Laser
by Guang Dai, Yan Liu, Zhenzhen Shang, Yangjun Yan, Hui Peng and Heng Zhang
Nanomaterials 2025, 15(21), 1605; https://doi.org/10.3390/nano15211605 - 22 Oct 2025
Viewed by 372
Abstract
This study proposes and demonstrates a highly sensitive displacement sensor based on a flexible random laser. The sensor utilizes a polydimethylsiloxane (PDMS) film where a self-assembled surface grating structure is formed via oxygen plasma surface treatment combined with bending prestress. This structure acts [...] Read more.
This study proposes and demonstrates a highly sensitive displacement sensor based on a flexible random laser. The sensor utilizes a polydimethylsiloxane (PDMS) film where a self-assembled surface grating structure is formed via oxygen plasma surface treatment combined with bending prestress. This structure acts as a photon-trapping microcavity and multiple scattering feedback center, integrated with embedded laser dye PM597 as the gain medium to form a flexible grating random laser. Experiments show that the device generates random lasing emission under 532 nm pumping (threshold ~21 mJ/cm2) with a linewidth of ~0.25 nm and a degree of polarization of ~0.82. Applying micro-displacement alters the PDMS film curvature, subsequently changing the grating morphology (height, angle). This modifies photon trapping efficiency and geometric deflection loss within the equivalent resonator cavity, leading to significant modulation of the random laser output intensity. A linear correspondence between displacement and lasing intensity was established (R2 ≈ 0.91), successfully demonstrating displacement sensing functionality. This scheme not only provides a low-cost method for fabricating flexible grating random lasers but also leverages the extreme sensitivity of random lasing modes to local disordered structural changes, paving the way for novel high-sensitivity mechanical sensors and on-chip integrated photonic devices. Full article
(This article belongs to the Special Issue Laser–Nanostructure Interactions: From Fundamentals to Applications)
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