Optics & Laser Technology, Journal Year: 2024, Volume and Issue: 180, P. 111537 - 111537
Published: Aug. 1, 2024
Language: Английский
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 13, 2025
Optical metasurfaces, arrays of nanostructures engineered to manipulate light, have emerged as a transformative technology in both research and industry due their compact design exceptional light control capabilities. Their strong light–matter interactions enable precise wavefront modulation, polarization control, significant near-field enhancements. These unique properties recently driven application biomedical fields. In particular, metasurfaces led breakthroughs imaging technologies, such achromatic imaging, phase extended depth-of-focus imaging. They also advanced cutting-edge biosensing featuring high-quality factor resonators As the demand for device miniaturization system integration increases, are expected play pivotal role development next-generation devices. this review, we explore latest advancements use applications, with particular focus on sensing. Additionally, discuss future directions aimed at transforming field by leveraging full potential provide compact, high-performance solutions wide range applications.
Language: Английский
Citations
5
Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 0(0), P. 240122 - 240122
Published: Jan. 1, 2024
Language: Английский
Citations
15
Nanophotonics, Journal Year: 2025, Volume and Issue: 14(8), P. 1045 - 1068
Published: Jan. 17, 2025
Abstract Enhancing the sensitivity of biomedical spectroscopy is crucial for advancing medical research and diagnostics. Metasurfaces have emerged as powerful platforms enhancing various spectral detection technologies. This capability arises from their unparalleled ability to improve interactions between light matter through localization enhancement fields. In this article, we review representative approaches recent advances in metasurface-enhanced spectroscopy. We provide a comprehensive discussion technologies enhanced by metasurfaces, including infrared spectroscopy, Raman fluorescence other modalities. demonstrate advantages metasurfaces improving sensitivity, reducing limits, achieving rapid biomolecule while discussing challenges associated with design, preparation, stability procedures. Finally, explore future development trends biological emphasize wide-ranging applications.
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: April 15, 2025
Optical phase imaging has become a pivotal tool in biomedical research, enabling label-free visualization of transparent specimens. Traditional optical techniques, such as Zernike contrast and differential interference microscopy, fall short providing quantitative information. Digital holographic microscopy (DHM) addresses this limitation by offering precise measurements; however, off-axis configurations, particularly Mach-Zehnder Michelson-based setups, are often hindered environmental susceptibility bulky components due to their separate reference object beam paths. In work, we have developed meta-based interferometric system using common-path DHM configuration. A meta-biprism, featuring two opposite gradient phases created GaN nanopillars selected for low loss durability, serves compact efficient splitter. Our effectively captures the complex wavefronts samples, retrieval information, which demonstrate standard resolution targets human lung cell lines. Additionally, our exhibits enhanced temporal stability compared conventional reducing fluctuations over extended measurement periods. These results not only underline potential metasurfaces advancing capabilities but also promise significant advancements diagnostics.
Language: Английский
Citations
0
Chinese Journal of Physics, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Language: Английский
Citations
0
Applied Physics Letters, Journal Year: 2024, Volume and Issue: 125(3)
Published: July 15, 2024
We proposed a sensor architecture for surface-enhanced Raman scattering (SERS) based on Fe ion doped LN (FLN) crystal, which was modified by large-area laser-induced periodic surface structures (LIPSS) and subsequently decorated with Ag nanoparticles (Ag NPs). Based such FLN/LIPSS/Ag substrate, strikingly boosted SERS enhancement obtained at constant temperature owing to the LIPSS-related hot spot improvement. Benefiting from pyroelectric effect of FLN further enhanced achieved under heating cooling processes, can be ascribed additional charge transfer between molecules NPs triggered potential. The experimental results highlight high fabrication efficiency, ultrasensitivity, uniformity, universality integrating advantages both LIPSS crystal. More interestingly, selective suppression signals processes observed, extends applications substrate detection molecule complexes as lake water polluted crystal violet 4-aminothiophenol molecules.
Language: Английский
Citations
1
Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 24, 2024
Abstract Acquisition time and optical sectioning capability are critical factors in fluorescence imaging. Confocal microscopy is a vital imaging method to inherently observe volumetric tissues with fine capability; however, point‐by‐point scanning time‐consuming. Metasurfaces, type of flat optics utilizing nano‐scale structures, provide diverse functionalities extensive flexibility controlling light wavefronts. Here, meta‐microlens‐array (meta‐MLA) for multifocal confocal enhance acquisition speed introduced, reduce photo‐bleaching, improve energy efficiency while remaining compatible existing commercial configurations. Point spread function (PSF) the meta‐MLA lateral axial directions has been evaluated. Fast optically sectioned images various samples, including pollen grains biological tissue phantoms, performed. Image quality further enhanced by Richardson–Lucy (RL) deconvolution total variation (TV). The trade‐off between spatial resolution overcome using deep neural network models, comparing performance metrics conventional microscope. combination learning superior image fast will likely extend clinical applications miniaturized
Language: Английский
Citations
1
Published: April 5, 2024
Language: Английский
Citations
0
Journal of Applied Physics, Journal Year: 2024, Volume and Issue: 136(17)
Published: Nov. 5, 2024
Metasurface that achieves extraordinary terahertz transmission (ETT) and local electric field enhancement (FE) holds significant potential for studies involving extremely low concentrations of target materials. In this study, we explore a composite aperture metasurface capable both ETT FE. By inserting bow-tie apertures in the “minimum-resonance” zone between four adjacent rhombic lattices, FE factor is achieved. Notably, adjusting configuration enhances coupling surface plasmons, thereby expanding bandwidth. Through parameter optimization, peak exceeding 95% transmittance above 80% frequency range 2.44–3.65 THz, while simultaneously exhibiting maximum 1005 at 3.45 THz. This approach offers promising avenue design metasurfaces spectroscopy biosensor applications.
Language: Английский
Citations
0
Optics & Laser Technology, Journal Year: 2024, Volume and Issue: 180, P. 111537 - 111537
Published: Aug. 1, 2024
Language: Английский
Citations
0