Optics & Laser Technology, Journal Year: 2025, Volume and Issue: 188, P. 112949 - 112949
Published: April 12, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(39)
Published: March 22, 2023
Abstract The rapid development of additive manufacturing has fueled a revolution in various research fields and industrial applications. Among the myriad advanced 3D printing techniques, two‐photon polymerization lithography (TPL) uniquely offers significant advantage nanoscale print resolution, been widely employed diverse fields, for example, life sciences, materials mechanics, microfluidics. More recently, by virtue optical transparency most resins used, TPL is finding new applications optics photonics, with nanometer to millimeter feature dimensions. It enables minimization elements systems, exploration light‐matter interactions degrees freedom, never possible before. To review recent progress related research, it starts fundamentals material formulation, then discusses novel fabrication methods, wide range These notably include diffractive, topological, quantum, color optics. With panoramic view development, concluded insights perspectives future potential
Language: Английский
Citations
178
ACS Photonics, Journal Year: 2024, Volume and Issue: 11(3), P. 816 - 865
Published: Feb. 27, 2024
Metasurfaces have recently risen to prominence in optical research, providing unique functionalities that can be used for imaging, beam forming, holography, polarimetry, and many more, while keeping device dimensions small. Despite the fact a vast range of basic metasurface designs has already been thoroughly studied literature, number metasurface-related papers is still growing at rapid pace, as research now spreading adjacent fields, including computational augmented virtual reality, automotive, display, biosensing, nonlinear, quantum topological optics, computing, more. At same time, ability metasurfaces perform functions much more compact systems triggered strong constantly interest from various industries greatly benefit availability miniaturized, highly functional, efficient components integrated optoelectronic low cost. This creates truly opportunity field make both scientific an industrial impact. The goal this Roadmap mark "golden age" define future directions encourage scientists engineers drive development toward excellence broad adoption.
Language: Английский
Citations
118
ACS Nano, Journal Year: 2023, Volume and Issue: 17(15), P. 14678 - 14685
Published: July 25, 2023
The imaging of microscopic biological samples faces numerous difficulties due to their small feature sizes and low-amplitude contrast. Metalenses have shown great promise in bioimaging as they access the complete complex information, which, alongside extremely compact footprint potential integrate multiple functionalities into a single device, allow for miniaturized microscopy with exceptional features. Here, we design experimentally realize dual-mode metalens integrated liquid crystal cell that can be electrically switched between bright-field edge-enhanced on millisecond scale. We combine concepts geometric propagation phase physically encode required profiles using hydrogenated amorphous silicon operation at visible wavelengths. two distinct include (1) conventional hyperbolic (2) spiral topological charge +1 imaging. demonstrate focusing vortex generation ability under different states circular polarization prove its use This work proves method vivo observation monitoring response drug screening within form factor.
Language: Английский
Citations
70
International Journal of Extreme Manufacturing, Journal Year: 2024, Volume and Issue: 6(4), P. 042002 - 042002
Published: March 20, 2024
Abstract Optical imaging systems have greatly extended human visual capabilities, enabling the observation and understanding of diverse phenomena. Imaging technologies span a broad spectrum wavelengths from x-ray to radio frequencies impact research activities our daily lives. Traditional glass lenses are fabricated through series complex processes, while polymers offer versatility ease production. However, modern applications often require lens assemblies, driving need for miniaturization advanced designs with micro- nanoscale features surpass capabilities traditional fabrication methods. Three-dimensional (3D) printing, or additive manufacturing, presents solution these challenges benefits rapid prototyping, customized geometries, efficient production, particularly suited miniaturized optical devices. Various 3D printing methods demonstrated advantages over counterparts, yet remain in achieving resolutions. Two-photon polymerization lithography (TPL), technique, enables intricate structures beyond diffraction limit via nonlinear process two-photon absorption within liquid resin. It offers unprecedented abilities, e.g. alignment-free fabrication, prototyping almost arbitrary nanostructures. In this review, we emphasize importance criteria performance evaluation devices, discuss material properties relevant TPL, techniques, highlight application TPL imaging. As first panoramic review on topic, it will equip researchers foundational knowledge recent advancements optics, promoting deeper field. By leveraging its high-resolution capability, extensive range, true processing, alongside advances materials, design, envisage disruptive solutions current promising incorporation future applications.
Language: Английский
Citations
28
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149053 - 149053
Published: Jan. 29, 2024
Language: Английский
Citations
23
ACS Nano, Journal Year: 2024, Volume and Issue: 18(5), P. 4388 - 4397
Published: Jan. 23, 2024
Coherent deep ultraviolet (DUV) light sources are crucial for various applications such as nanolithography, biomedical imaging, and spectroscopy. DUV can be generated by using conventional nonlinear optical crystals (NLOs). However, NLOs limited their bulky size, inadequate transparency at the regime, stringent phase-matching requirements harmonic generation. Recently, dielectric metasurfaces support high Q-factor resonances offer a promising approach efficient generation short wavelengths. In this study, we demonstrated crystalline silicon (c-Si) metasurface simultaneously exciting modal phase-matched bound states in continuum (BIC) resonance fundamental wavelength of 840 nm with higher degree freedom precise control BIC plasmonic 280 to enhance third (THG). We experimentally achieved ∼180 owing relatively large refractive index c-Si geometric symmetry breaking structure. realized THG power 14.5 nW peak density 15 GW/cm2 excitation. The measured is 14 times than state-of-the-art same maximum obtained enhancement factor up 48. This relies on significant third-order susceptibility c-Si, interband nature DUV, strong field confinement boost overall conversion efficiency 5.2 × 10–6% regime. Our work shows potential developing ultracompact high-efficacy devices.
Language: Английский
Citations
16
Small Methods, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 3, 2025
Abstract Feynman's statement, “There is plenty of room at the bottom”, underscores vast potential atomic scale, envisioning microscopic machines. Today, this vision extends into 3D space, where thousands atoms and molecules are volumetrically patterned to create light‐driven technologies. To fully harness their potential, designs must incorporate high‐refractive‐index elements with exceptional mechanical chemical resilience. The frontier, however, lies in creating spatially micro‐optical architectures glass ceramic materials dissimilar compositions. This multi‐material capability enables novel ways shaping light, leveraging interaction between diverse interfaced compositions push optical boundaries. Specifically, it encompasses both integration within same use different for distinct architectural features an system. Integrating fluid handling systems two‐photon lithography (TPL) provides a promising approach rapidly prototyping such complex components. review examines single TPL processes, discussing photoresin customization, essential physico‐chemical conditions, need cross‐scale characterization assess quality. It reflects on challenges characterizing multi‐scale outlines advancements structures. roadmap bridge research industry, emphasizing collaboration contributions advancing micro‐optics.
Language: Английский
Citations
2
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(39)
Published: Jan. 17, 2023
Abstract Two photon polymerisation using direct laser writing is a burgeoning field of research, with recent focus being placed on bringing added value to microstructures, by incorporating soft, responsive polymers. Moving the micron‐scale can have profound impact such stimuli‐responsive materials, whose speed actuation be increased many‐fold compared their mm‐scale counterparts. Here, fabrication submicron 2D photonic structures, based vapor‐responsive photoresist refractive index <1.55, in visible wavelength range. The fabricated concentric spiral arrays are evaluated for feasibility as vapor sensors testing spectral and structural color reproducibility reversibility under water, ethanol, isopropanol, acetone vapors. This approach allows realization predictable uniform displays that modulated upon stimuli response. transmitted colour dry hydrated states accurately modelled. knowledge used design demonstrate structures cloaking image transformation. Such capability encryption anti‐counterfeiting applications.
Language: Английский
Citations
24
Nature Nanotechnology, Journal Year: 2024, Volume and Issue: 19(6), P. 766 - 774
Published: Feb. 22, 2024
Abstract Incorporating structural coloured materials in flexible and stretchable elastomeric substrates requires numerous steps that compromise their scalability economic viability for prospective applications visual sensors displays. Here we describe a one-step approach fabricating plasmonic Ga nanostructures embedded polydimethylsiloxane substrate exhibiting tunable chromaticity, response to mechanical stimuli. The process exploits the capillary interactions between uncrosslinked oligomeric chains of metal deposited by thermal evaporation, as elucidated theoretical model developed. By tuning oligomer content polydimethylsiloxane, attain range colours covering substantial gamut CIE (Commission Internationale de l’Éclairage) coordinates. This mechanochromic shows reversible external stimuli ~80,000 cycles. We showcase capabilities our processing technique presenting prototypes reflective displays monitoring body parts, smart bandages capacity nanostructured film map force real time.
Language: Английский
Citations
14
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: March 16, 2024
Mask-free multi-photon lithography enables the fabrication of arbitrary nanostructures low cost and more accessible than conventional lithography. A major challenge for is to achieve ultra-high precision desirable lateral resolution due inevitable optical diffraction barrier proximity effect. Here, we show a strategy, light matter co-confined lithography, overcome issues via combining photo-inhibition chemical quenchers. We deeply explore quenching mechanism photoinhibition multiphoton Besides, mathematical modeling helps us better understand that synergy quencher can gain narrowest distribution free radicals. By using 30 nm critical dimension 100 resolution, which further decrease gap with
Language: Английский
Citations
13