Mechanochromic Organic Micro‐Laser DOI
Chun‐Lin Sun, Jun Li, Juan Ye

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Abstract This work presents the first demonstration of a mechanochromic organic micro‐laser, which exhibits remarkable wide range pressure sensing characteristics. The gain material, pinacolato boronate ester functionalized anthanthrene (AnBPin), is designed by incorporating mechanofluorochromic (MFC) properties into laser dye. AnBPin reversible transition between green and orange fluorescence upon grinding annealing recrystallization cycle, its micro‐crystal typical micro‐laser behaviors. Applying localized mechanical as low 0.1 MPa inhibits behavior at given spot. In contrast, under 1 to 2 GPa hydrostatic pressure, maintains narrow emission while showing pressure‐dependent shift in wavelength. By combining theory experimentation, we attribute unusual pressure‐correlated spectroscopy unique interleaved locked crystal structure. Understanding micro‐crystals an unprecedented significantly expands family micro‐lasers provides new route for wide‐range photonic detection.

Language: Английский

Hybrid and composite materials of organic crystals DOI Creative Commons

Xuesong Yang,

Marieh B. Al‐Handawi, Liang Li

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(8), P. 2684 - 2696

Published: Jan. 1, 2024

Combining organic crystals and polymers results in a new class of all-organic, lightweight, flexible materials with unprecedented mechanical robustness, resilience, diversity combination other functional materials.

Language: Английский

Citations

14
Mechanically controlled multifaceted dynamic transformations in twisted organic crystal waveguides DOI Creative Commons

Mehdi Rohullah,

Vuppu Vinay Pradeep,

Shruti Singh

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 13, 2024

Abstract This study introduces mechanically induced phenomena such as standing, leaning, stacking, and interlocking behaviors in naturally twisted optical waveguiding microcrystals on a substrate. The microscale crystal self-assembled from 2,4-dibromo-6-(((2-bromo-5-fluorophenyl)imino)methyl)phenol is flexible emits orange fluorescence. Mechanistic analysis reveals the strain generated by intergrowing orientationally mismatched nanocrystallites responsible for growth. crystal’s mechanical flexibility perpendicular direction to (001) (010) planes can be attributed intermolecular Br···Br, F···Br, π···π stacking interactions. Through systematic process involving step-by-step bending subsequent experiments at each bent position, linear relationship between loss established. Additionally, vertical standing leaning of these crystals different angles flat surface multiple reveal three-dimensional aspects organic waveguides, introducing light trajectories 3D space. Furthermore, integration two axially interlocked enables coupling polarization rotation along their long axis. These dynamics expand horizons behavior have potential revolutionize various applications, rendering invaluable realm crystal-related science technology.

Language: Английский

Citations

12
Mechanical Twisting-Induced Enhancement of Second-Order Optical Nonlinearity in a Flexible Molecular Crystal DOI
Zhihua Wang,

Wenqing Han,

Bona Fu

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Flexible molecular crystals are essential for advancing smart materials, providing unique functionality and adaptability applications in next-generation electronics, pharmaceuticals, energy storage. However, the optical of flexible have been largely restricted to linear optics, with nonlinear (NLO) properties rarely explored. Herein, we report on application mechanical twisting second-order optics. The crystal formed through self-assembly model compound 9-anthraldehyde (AA) features an intrinsic chiral noncentrosymmetric structure, demonstrating high efficiency second harmonic generation (SHG) NLO circular dichroism, which could be greatly enhanced by macroscopic twisting. anisotropic stacking imparts AA flexibility combined elastic bending plastic isochiral enhance SHG intensities order magnitude depending their M- or P-configuration. Meanwhile, dichroism factor gSHG-CD twisted is increased, achieving highest reported anisotropy among organic materials. These boosted performances intensity chiroptical response expected expand photonic crystals.

Language: Английский

Citations

1
Monitoring high‐temperature sensor with optical performance using graphene in power plant industries DOI Creative Commons
Hadi Sharifi, Aslan Nouri Moqadam, Omid Mohsen Daraei

et al.

IET Nanodielectrics, Journal Year: 2025, Volume and Issue: 8(1)

Published: Jan. 1, 2025

Abstract Optical sensors getting widespread usage in almost every field, especially industries. A high thermal optical sensor is proposed to predict the environmental temperature power plants. sensitivity, accuracy, low cost, compact size, linear operation, and suitable transmission coefficient a wide range achieved that changing surrounding has severe effect on conductivity of graphene which changes sensor. In this paper, position sheet affects interaction light graphene, effectively. maximum sensitivity 17.47% K deviation. The Cylindrical diameter 4.1 lambda, smallest size among references checked desired performance up 2000 K, indicating efficiency fibre optic with coating great potential field measurement, atmosphere industry.

Language: Английский

Citations

0
In-plane hierarchical assembly of two-dimensional molecular crystals toward on-chip multimode optical waveguides DOI Creative Commons

Tian-Zhe Feng,

Qiang Lv,

Zhao‐Ji Lv

et al.

Science Advances, Journal Year: 2025, Volume and Issue: 11(10)

Published: March 5, 2025

Two-dimensional (2D) organic lateral heterostructures (OLHs) integrating two or more components have important potential applications in optoelectronics. However, the controlled synthesis of 2D OLHs with in-plane tunable emission remains a great challenge owing to difficulty sequential integration multiple components. Here, cascaded strategy is demonstrated for hierarchical assembly multicolor emission, from red-blue and red-green red-green-blue (RGB), size ~15 micrometers. The regions are realized by synergistic effects molecular doping method photo-induced oxidation route during epitaxial growth process. obtained can actively achieve full-spectrum light transport 420 720 nanometers depending on different excitation positions thus function as multimode RGB signal converters. These findings provide insights into development next-generation

Language: Английский

Citations

0
Focused Xe‐Ion Plasma Beam Milling of Coumarin‐153 Single Crystals Into Photonic Cavities–Experimental and Theoretical Investigations DOI Creative Commons
Melchi Chosenyah, Vuppu Vinay Pradeep, V. B. Novikov

et al.

Advanced Physics Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Abstract Focused ion beam (FIB) milling with Ga‐ions enabled early success in fabricating photonic cavities organic crystals, advancing crystal foundry . However, Ga‐ion often causes contamination and amorphization. In contrast, Xe‐ion plasma milling, its inertness, faster smoother finishes, reduced sidewall damage, presents a promising alternative. This study introduces for coumarin‐153 dye to fabricate precise disc (DR1 DR2) ring resonators (RR1 RR2). These resonators, crucial sensors integrated circuits, support sustained light recirculation enhanced optical signals, evident as resonant modes photoluminescence spectra. Finite element analysis confirms the expected strong field localization near resonators' outer boundaries, highlighting FIB potential photonics.

Language: Английский

Citations

0
A Hybrid Organic‐Crystal‐Based Curved Waveguide Network for Producing, Splitting, and Transducing Multi‐Color Outputs DOI

Mehdi Rohullah,

Vinod Kumar Avulu,

Rajadurai Chandrasekar

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(8)

Published: April 12, 2024

Abstract Hybrid optical components and circuits that deal with multiple signal generation processing are quintessential for neural networking systems. Herein, the study reports fabrication of one such component, a hybrid directional coupler (HDC) from blue emissive (4,4′‐bis(2,6‐di(1H‐pyrazol‐1‐yl)pyridin‐4‐yl)biphenyl) (BPP) green ( E )‐1‐(((5‐bromopyridin‐2‐yl)imino)methyl)naphthalen‐2‐ol (BPyIN) pseudo‐plastic molecular crystals. Initially, BPyIN microcrystal waveguide (OW1) is shaped into strained five bends using an atomic force microscopy cantilever‐tip aided mechanophotonics approach. Later, singly bent (OW2) integrated at coupling region on to produce 2 × monolithic (DC). this DC extended HDC by integrating BPP (OW3) another bend deformed waveguide. The fabricated can effectively split incident light three parts different ratios deliver multi‐color outputs depending port receiving input signal. spontaneous various signals produced in circuit helps understanding functioning complex networks. demonstration innovative manifests their utility diverse applications quantum computing

Language: Английский

Citations

3
Dimension Evolution of Self‐Assembled Organic Microcrystal for Laser and Polarization‐Rotation Function DOI

Yinan Yao,

Yong Sheng Zhao, Lunhui Guan

et al.

Small, Journal Year: 2024, Volume and Issue: 20(28)

Published: Feb. 5, 2024

Abstract Multidimensional integrated micro/nanostructures are vitally important for the implementation of versatile photonic functionalities, whereas current material structures still suffer undesired surface defects and contaminations in either multistep micro/nanofabrications or extreme synthetic conditions. Herein, dimension evolution organic self‐assembled 2D microrings 3D microhelixes multidimensional devices is realized via a protic/aprotic solvent‐directed molecular assembly method based on multiaxial confined‐assisted growth mechanism. The with consummate circle boundaries molecular‐smooth surfaces function as high‐quality whispering‐gallery‐mode microcavities dual‐wavelength energy‐influence‐dependent switchable lasing. Moreover, smooth natural twistable characteristics act active photon‐transport materials polarization rotators. These results will broaden horizon constructing microstructures circuits.

Language: Английский

Citations

2
An Extremely Pseudo‐Plastic, Organic Crystal‐Based Concentric‐Ring‐Resonator Coupled Optical Waveguide DOI Creative Commons

Avulu Vinod Kumar,

Deepak Manoharan, Ankur Khapre

et al.

Advanced Physics Research, Journal Year: 2024, Volume and Issue: unknown

Published: July 4, 2024

Abstract The precise shaping of optical waveguides is crucial for advancing photonic circuit technologies. In this study, the first fabrication a resonator introduced with coiled circular geometry(CCG) using pseudo‐plastic microcrystals 6,6′‐((1 E ,1′ )‐hydrazine‐1,2‐diylidenebis(methaneylylidene))bis(2,4‐dibromophenol), HDBP. molecular packing supported by type‐II inter‐molecular halogen bonding and hydrogen provides an exceptional strain‐holding capacity HDBP crystals. This property enables creation compact CCGs three interconnected turns utilizing atomic force microscopy cantilever tip‐based mechanophotonics technique. CCG acts as concentric ring‐resonator (CRR) that splits routes light in clockwise anticlockwise directions along turns, providing interference. Subsequently, waveguide integrated CRR, resulting development organic crystal‐based filter. modulation observed modes’ wavelengths their intensities when coupled CRR shows filter functionality. fabricated device holds promise applications high‐fidelity sensing, precision micro‐measurements, quantum processing technologies, showcasing potential crystals photonics.

Language: Английский

Citations

2
Programmable in‐situ co‐assembly of organic multi‐block nanowires for cascade optical waveguides DOI
Shuai Zhao, Jiaxuan Zhang,

Chao-Fei Xu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(52)

Published: Aug. 22, 2024

Abstract Organic heterostructures (OHs) with multi‐segments exhibit special optoelectronic properties compared monomeric structures. Nevertheless, the synthesis of multi‐block remains challenging due to compatibility issues between segment parts, which restricts their application in optical waveguides and integrated optics. Herein, we demonstrate programmable in‐situ co‐assembly engineering, combining multi‐step spontaneous self‐assembly processes promote a rational arrangement three or more segments. The design segments enables exciton manipulation ensures proper output among multi‐segment OHs. This work controllable growth within OHs, providing pathway construct complex OHs for development future applications.

Language: Английский

Citations

2