Mechanically-Guided 3D Assembly for Architected Flexible Electronics

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11137 - 11189

Published: Sept. 7, 2023

Architected flexible electronic devices with rationally designed 3D geometries have found essential applications in biology, medicine, therapeutics, sensing/imaging, energy, robotics, and daily healthcare. Mechanically-guided assembly methods, exploiting mechanics principles of materials structures to transform planar fabricated using mature semiconductor techniques into architected ones, are promising routes such devices. Here, we comprehensively review mechanically-guided methods for electronics. Mainstream classified discussed on the basis their fundamental deformation modes (i.e., rolling, folding, curving, buckling). Diverse interconnects device forms then summarized, which correspond two key components an device. Afterward, structure-induced functionalities highlighted provide guidelines function-driven structural designs electronics, followed by a collective summary resulting applications. Finally, conclusions outlooks given, covering achieve extreme deformations dimensions, inverse design encapsulation strategies as well perspectives future

Language: Английский

---

Roadmap for phase change materials in photonics and beyond

iScience, Journal Year: 2023, Volume and Issue: 26(10), P. 107946 - 107946

Published: Sept. 22, 2023

Phase Change Materials (PCMs) have demonstrated tremendous potential as a platform for achieving diverse functionalities in active and reconfigurable micro-nanophotonic devices across the electromagnetic spectrum, ranging from terahertz to visible frequencies. This comprehensive roadmap reviews material device aspects of PCMs, their applications spectrum. It discusses various configurations optimization techniques, including deep learning-based metasurface design. The integration PCMs with Photonic Integrated Circuits advanced electric-driven are explored. hold great promise multifunctional development, non-volatile memory, optical data storage, photonics, energy harvesting, biomedical technology, neuromorphic computing, thermal management, flexible electronics.

Language: Английский

---

On‐Chip Non‐Volatile Reconfigurable Phase Change Topological Photonics

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Abstract Programmable on‐chip terahertz (THz) topological photonic devices are poised to address the rising need for high‐capacity data systems, offering broad bandwidth, minimal loss, and reconfigurability. However, current THz chips rely on volatile tuning mechanisms that require continuous power function. Here, a nonvolatile, programmable silicon chip is demonstrated integrates waveguide‐cavity coupled system with phase‐change material, Ge 2 Sb Te 5 (GST), enabling persistent efficient functionality without constant input. Through precise of intermediate phase states GST between amorphous crystalline forms, stable, non‐volatile reconfiguration cavity achieved, transitions across over‐coupling, critical coupling, under‐coupling states. Multi‐level modulation resonance transmission depth 70 dB demonstrated, control over onset disappearance modes dynamic coupling The facilitates phototunable, nonvolatile configurations, allowing controlled resetting cavity. first integrated flexible modes. This advancement significantly paves way integrating change materials into devices, including interconnects, modulators, logic circuits.

Language: Английский

---

Developments in Localized Surface Plasmon Resonance

Plasmonics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

Abstract Localized surface plasmon resonance (LSPR) is a nanoscale phenomenon associated with noble metal nanostructures that has long been studied and gained considerable interest in recent years. These resonances produce sharp spectral absorption scattering peaks, along strong electromagnetic near-field enhancements. Over the past decade, advancements fabrication of have propelled significant developments various scientific technological aspects LSPR. One notable application detection molecular interactions near nanoparticle surface, observable through shifts LSPR peak. This document provides an overview this sensing strategy. Given broad expanding scope topic, it impossible to cover every aspect comprehensively review. However, we aim outline major research efforts within field review diverse array relevant literature. We will provide detailed summary physical principles underlying address some existing inconsistencies nomenclature used. Our discussion primarily focus on sensors employ nanoparticles, rather than those utilizing extended, fabricated structures. concentrate where acts as primary mode signal transduction, excluding hybrid strategies like combining fluorescence. Additionally, our examination biological largely pertain label-free methods, use nanoparticles labels or means enhance efficacy label. In subsequent section review, delve into analytical theory underpinning LSPR, exploring its origins dependency material properties metals surrounding refractive index. discuss behavior both spherical spheroidal particles elaborate how response varies particle ratio. Further, detail fundamentals nanoparticle-based sensing. includes exploration single-particle ensemble measurements comparative analysis scattering, absorption, extinction phenomena. The extend these are applied practical scenarios, highlighting key experimental approaches measurement techniques.

Language: Английский

---

Sub‐1‐Volt Electrically Programmable Optical Modulator Based on Active Tamm Plasmon

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(15)

Published: Jan. 4, 2024

Abstract Reconfigurable optical devices hold great promise for advancing high‐density interconnects, photonic switching, and memory applications. While many modulators based on active materials have been demonstrated, it is challenging to achieve a high modulation depth with low operation voltage in the near‐infrared (NIR) range, which highly sought‐after wavelength window free‐space communication imaging Here, electrically switchable Tamm plasmon coupled poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) introduced. The device allows across entire NIR range by fully absorbing incident light even under epsilon near zero conditions. Optical exceeding 88% achieved using CMOS‐compatible of ±1 V. This facilitated precise electrical control charge carrier density through an electrochemical doping/dedoping process. Additionally, potential applications are extended non‐volatile multi‐memory state device, capable rewritable storage exhibiting long‐term potentiation/depression properties neuromorphic behavior.

Language: Английский

---

Laser Dynamic Control of the Thermal Emissivity of a Planar Cavity Structure Based on a Phase-Change Material

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(4), P. 4925 - 4933

Published: Jan. 17, 2024

Tailoring the thermal emission of a material in long-wave infrared (IR) range 8–13 μm is crucial for many IR-adaptive applications, including personal management, IR camouflage, and radiative cooling. Although various materials surface structures have been proposed these purposes, space-selective dynamic control their emissivity challenging. In this study, we present planar cavity structure consisting Ge2Sb2Te5 (GST) film on top thin metal reflector to modulate its by using an ultraviolet laser beam. A laser-induced phase change GST allowed local emissivity. The average was tunable from 0.15 0.77 simply changing energy deposited film. This enabled printing high-contrast patterns, which were erasable subsequent annealing. Emissivity-modulated cavities could be fabricated not only rigid substrates but also flexible plastic such as polyimide. highly remained stable upon repeated bending curvature radius 0.5 cm. study provides promising route realizing scalable emitters with

Language: Английский

---

Nanofabrication for Nanophotonics

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Nanofabrication, a pivotal technology at the intersection of nanoscale engineering and high-resolution patterning, has substantially advanced over recent decades. This enables creation nanopatterns on substrates crucial for developing nanophotonic devices other applications in diverse fields including electronics biosciences. Here, this mega-review comprehensively explores various facets nanofabrication focusing its application nanophotonics. It delves into techniques like focused ion beam electron lithography, methods 3D complex structure fabrication, scalable manufacturing approaches, material compatibility considerations. Special attention is given to emerging trends such as utilization two-photon lithography structures materials phase change substances 2D with excitonic properties. By highlighting these advancements, review aims provide insights ongoing evolution nanofabrication, encouraging further research creating functional nanostructures. work encapsulates critical developments future perspectives, offering detailed narrative state-of-the-art tailored both new researchers seasoned experts field.

Language: Английский

---

Programmable optical meta-holograms

Nanophotonics, Journal Year: 2023, Volume and Issue: 13(8), P. 1201 - 1217

Published: Sept. 30, 2023

The metaverse has captured significant attention as it provides a virtual realm that cannot be experienced in the physical world. Programmable optical holograms, integral components of metaverse, allow users to access diverse information without needing external equipment. Meta-devices composed artificially customized nano-antennas are excellent candidates for programmable holograms due their compact footprint and flexible electromagnetic manipulation. meta-holograms can dynamically alter reconstructed images real-time by directly modulating properties metasurface or modifying incident light. Information encoded across multiple channels freely selected through switchable functionality. These advantages will broaden range scenarios facilitating further development practical applications. This review concentrates on recent advancements fundamentals applications meta-holograms. We aim provide readers with general knowledge potential inspiration applying meta-holograms, both intrinsic ways, into better performance. An outlook perspective challenges prospects these rapidly growing research areas provided.

Language: Английский

---

Electrochromic nanopixels with optical duality for optical encryption applications

Nanophotonics, Journal Year: 2024, Volume and Issue: 13(7), P. 1119 - 1129

Published: Jan. 11, 2024

Abstract Advances in nanophotonics have created numerous pathways for light–matter interactions nanometer scale, enriched by physical and chemical mechanisms. Over the avenue, electrically tunable photonic response is highly desired optical encryption, switch, structural color display. However, perceived obstacle, which lies energy-efficient tuning mechanism and/or its weak interaction, treated as a barrier. Here, we introduce electrochromic nanopixels made of hybrid nanowires integrated with polyaniline (PANI). The device shows duality between two resonators: (i) surface plasmon polariton (SPP)-induced waveguide (wavelength-selective absorber) (ii) ultrathin resonator (broadband absorber). With switching effect resonant modes, achieve enhanced chromatic variation spanning from red to green blue while operating at sub-1-volt level, ensuring compatibility CMOS voltage range. This modulation achieved improving effectively harnessing intrinsic property transition PANI lossy dielectric redox states. In our experimental approach, successfully scaled up fabrication an 8-inch wafer, tailoring nanowire array different dimensions information encryption. Demonstrating distinct chromaticity modulation, encryption multiple data bits, 8 bits per unit cell. By capitalizing on remarkable sensitivity angular dependence waveguiding mode, further enhance capacity impressive 10

Language: Английский

---

Omnidirectional color wavelength tuning of stretchable chiral liquid crystal elastomers

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: May 22, 2024

Abstract Wavelength-tunable structural colors using stimuli-responsive materials, such as chiral liquid crystals (CLCs), have attracted increasing attention owing to their high functionality in various tunable photonic applications. Ideally, on-demand omnidirectional wavelength control is highly desirable from the perspective of wavelength-tuning freedom. However, despite numerous previous research efforts on CLC colors, only mono-directional tuning toward shorter wavelengths has been employed most studies date. In this study, we report ideally desired longer and with significantly improved tunability over a broadband range. By areal expanding contractive strain dielectric elastomer actuators (DEAs) crystal elastomers (CLCEs), simultaneous color-tuning was achieved. This breakthrough enhances achievable freedom versatility, making it applicable broad range high-functional

Language: Английский

---