Nanocrystal Assemblies: Current Advances and Open Problems

ACS Nano, Год журнала: 2024, Номер 18(23), С. 14791 - 14840

Опубликована: Май 30, 2024

We explore the potential of nanocrystals (a term used equivalently to nanoparticles) as building blocks for nanomaterials, and current advances open challenges fundamental science developments applications. Nanocrystal assemblies are inherently multiscale, generation revolutionary material properties requires a precise understanding relationship between structure function, former being determined by classical effects latter often quantum effects. With an emphasis on theory computation, we discuss that hamper assembly strategies what extent nanocrystal represent thermodynamic equilibrium or kinetically trapped metastable states. also examine dynamic optimization protocols. Finally, promising functions examples their realization with assemblies.

Язык: Английский

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Two-photon polymerization lithography for imaging optics

International Journal of Extreme Manufacturing, Год журнала: 2024, Номер 6(4), С. 042002 - 042002

Опубликована: Март 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.

Язык: Английский

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Frontiers of Laser‐Based 3D Printing: A Perspective on Multi‐Photon Lithography

Laser & Photonics Review, Год журнала: 2024, Номер 18(7)

Опубликована: Март 26, 2024

Abstract Lasers are instrumental in enabling precise processing and fostering the development of new technologies. Particularly, ultrafast lasers, due to their unique interaction with matter, can achieve not only exceptional spatial precision but also meticulously determine degree modification. A prime example this is laser‐based 3D printing through multi‐photon lithography (MPL). This approach remarkably enables true structures at micro‐ nanoscale, without need for masks or cumbersome tools, simply by using computer‐aided designs. Owing these capabilities, MPL has emerged as a powerful manufacturing technique across various multidisciplinary fields. The ongoing growth MPL's utilization led notable advancements highly complex on different substrates, well improvements resolution throughput, novel photosensitive materials, which impressively facilitated expansion into broader fields over last few years. In perspective article, aim highlight recent trends MPL. current challenges will be explored, addressed ensure its further integration advanced Additive Manufacturing nanoscale. future perspectives opportunities discussed.

Язык: Английский

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Ligand-Assisted Direct Lithography of Upconverting and Avalanching Nanoparticles for Nonlinear Photonics

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(11), С. 7487 - 7497

Опубликована: Март 11, 2024

Upconverting nanoparticles (UCNPs) exhibit unique nonlinear optical properties that can be harnessed in microscopy, sensing, and photonics. However, forming high-resolution nano- micropatterns of UCNPs with large packing fractions is still challenging. Additionally, there limited understanding how nanoparticle patterning chemistries are affected by the particle size. Here, we explore direct for 6–18 nm Tm3+-, Yb3+/Tm3+-, Yb3+/Er3+-based using ligands form either new ionic linkages or covalent bonds between under ultraviolet (UV), electron-beam (e-beam), near-infrared (NIR) exposure. We study effect UCNP size on these approaches find 6 patterned compact ionic-based ligands. In contrast, larger requires long-chain, cross-linkable provide sufficient interparticle spacing to prevent irreversible aggregation upon film casting. Compared use a liquid monomer, our method limits cross-linking reaction bound deposited as thin film. This highly localized photo-/electron-initiated chemistry enables fabrication densely packed patterns high resolutions (∼1 μm UV NIR exposure; <100 e-beam). Our upconversion lithography approach demonstrates potential inexpensive continuous-wave lasers 2D 3D colloidal materials. The retain their upconverting, avalanching, photoswitching behaviors, which exploited devices next-generation applications.

Язык: Английский

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Beyond hype: unveiling the Real challenges in clinical translation of 3D printed bone scaffolds and the fresh prospects of bioprinted organoids

Journal of Nanobiotechnology, Год журнала: 2024, Номер 22(1)

Опубликована: Авг. 21, 2024

Bone defects pose significant challenges in healthcare, with over 2 million bone repair surgeries performed globally each year. As a burgeoning force the field of tissue engineering, 3D printing offers novel solutions to traditional transplantation procedures. However, current 3D-printed scaffolds still face three critical material selection, methods, cellular self-organization and co-culture, significantly impeding their clinical application. In this comprehensive review, we delve into performance criteria that ideal should possess, particular focus on core faced by technology during translation. We summarize latest advancements non-traditional materials advanced techniques, emphasizing importance integrating organ-like technologies bioprinting. This combined approach enables more precise simulation natural structure function. Our aim writing review is propose effective strategies address these promote translation for defect treatment.

Язык: Английский

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Multi‐Physical Lattice Metamaterials Enabled by Additive Manufacturing: Design Principles, Interaction Mechanisms, and Multifunctional Applications

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

Abstract Lattice metamaterials emerge as advanced architected materials with superior physical properties and significant potential for lightweight applications. Recent developments in additive manufacturing (AM) techniques facilitate the of lattice intricate microarchitectures promote their applications multi‐physical scenarios. Previous reviews on have largely focused a specific/single field, limited discussion properties, interaction mechanisms, multifunctional Accordingly, this article critically design principles, structure‐mechanism‐property relationships, enabled by AM techniques. First, are categorized into homogeneous lattices, inhomogeneous other forms, whose principles processes discussed, including benefits drawbacks different fabricating types lattices. Subsequently, structure–mechanism–property relationships mechanisms range fields, mechanical, acoustic, electromagnetic/optical, thermal disciplines, summarized to reveal critical principles. Moreover, metamaterials, such sound absorbers, insulators, manipulators, sensors, actuators, soft robots, management, invisible cloaks, biomedical implants, enumerated. These provide effective guidelines

Язык: Английский

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Super-resolution Laser Machining

International Journal of Machine Tools and Manufacture, Год журнала: 2025, Номер 205, С. 104246 - 104246

Опубликована: Янв. 5, 2025

Язык: Английский

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Flexible electromagnetic interference shields: Materials, structure and multifunctionalization

Materials Science and Engineering R Reports, Год журнала: 2024, Номер 160, С. 100823 - 100823

Опубликована: Июль 4, 2024

Язык: Английский

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A review of ultrafast laser micro/nano fabrication: Material processing, surface/interface controlling, and devices fabrication

Nano Research, Год журнала: 2024, Номер 17(7), С. 6212 - 6230

Опубликована: Май 18, 2024

Язык: Английский

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Smart mechanoluminescent phosphors: A review of zinc sulfide‐based materials for advanced mechano‐optical applications

Deleted Journal, Год журнала: 2024, Номер 2(3)

Опубликована: Авг. 1, 2024

Abstract The quest for mechanoluminescence (ML) in zinc sulfide (ZnS) spans more than a century, initially sparked by observations of natural minerals. There has been resurgence research into ML materials recent decades, driven advances optoelectronic technologies and deeper understanding their luminescent properties under mechanical stress. ZnS, particular, garnered attention owing to its remarkable ability sustain luminescence after 100,000 stimulations, positioning it as standout candidate applications. In contrast conventional photoluminescent electroluminescent light sources, ZnS composite elastomers have emerged flexible, stretchable self‐powered sources with considerable practical implications. This review introduces the development history, mechanisms, prototype devices, ZnS‐based material preparation methods, diverse applications spanning environmental mechanical‐to‐optical energy conversion, E‐signatures, anti‐counterfeiting, wearable information sensing advanced battery‐free displays, biomedical imaging, optical fiber sensors human–computer interactions, among others. By integrating insights from ML‐optics, mechanics, flexible optoelectronics, summarizing pertinent perspectives on current scientific challenges, application technology hurdles, potential solutions emerging frontiers, this aims furnish fundamental guidance conceptual frameworks design, advancement, cutting‐edge novel mechanoluminescent materials.

Язык: Английский

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