Masthead: (Advanced Optical Materials 24/2024) 2470076 First Published: 23 August 2024 PDF Request permissions Review Progress and Outlooks in Designing Photonic Biosensor for Virus Detection Annisa Tsalsabila, Valentinus A. Dabur, Indra J. Budiarso, Shofarul Wustoni, Heng-Chang Chen, Muhammad D. Birowosuto, Arie Wibowo, Shuwen Zeng 2400849 First Published: 05 July 2024 Progress and Outlooks in Designing Photonic Biosensor for Virus Detection Issue 24, 2024 Photonic biosensors stand out as promising tools for virus detection, offering high sensitivity, selectivity, rapid monitoring, and potential for point-of-care applications. This paper presents a comprehensive overview of photonic biosensors tailored for virus detection, focusing on sensing transducers, material design, and surface functionalization strategies to enhance the biorecognition of virus detection. Abstract Full text PDF References Request permissions Research Article Stretchable Metamaterials with Tamm/Fano Resonances for Tunable, Efficient Mechanochromic Color Shifting Sravya M. Nuguri, Daniel Shreiber, Benjamin Cerjan, Vincent Einck, Naomi J. Halas, Mark H. Griep, James J. Watkins 2400921 First Published: 24 June 2024 Stretchable Metamaterials with Tamm/Fano Resonances for Tunable, Efficient Mechanochromic Color Shifting Issue 24, 2024 This study introduces a cost-effective method for constructing Tamm Plasmon (TP) resonant devices on flexible substrates, crucial for advancing flexible and wearable technology platforms. Combining nanoimprint lithography with layer-by-layer assembly integrates a stretchable Bragg stack with gold and aluminum metasurfaces, facilitating tunable structural colors and optical resonances from visible to near-infrared ranges. Additionally, this stretchable device exhibits long-term stability, reversibility, and high spectral sensitivity to mechanical strains. Abstract Full text PDF References Request permissions Mechanically Induced Transient Fluorescence of Photochromic Diarylethene Crystals for Sensing and Security Material Ryo Nishimura, Yuka Kobayashi, Hikaru Sotome, Hiroshi Miyasaka, Masakazu Morimoto 2400143 First Published: 30 April 2024 Mechanically Induced Transient Fluorescence of Photochromic Diarylethene Crystals for Sensing and Security Material Issue 24, 2024 A new strategy of the molecular design is established to achieve transient fluorescence when mechanical force is applied. The crystal shows fluorescence when it is scratched by a spatula under UV light and this fluorescence diminished within a few seconds. The mechanisms of dynamic mechanofluorochromism are clarified and demonstrate the applications as stress-sensing material and time-dependent information encryption. Abstract Full text PDF References Request permissions Open Access Synthesis and Emission Dynamics of Sub-3 nm Upconversion Nanoparticles Baptiste Amouroux, Ali Eftekhari, Clément Roux, Jean-Claude Micheau, Pierre Roblin, Mathieu Pasturel, Fabienne Gauffre, Christian Würth, Ute Resch-Genger, Michel Sliwa, Aude Bouchet, Christophe Coudret 2303283 First Published: 26 June 2024 Synthesis and Emission Dynamics of Sub-3 nm Upconversion Nanoparticles Issue 24, 2024 Reducing the size of upconversion nanoparticles to a few nanometers produces materials containing a very small number of emitters. This simplifies the analysis of the contributions of the different energy transfers at play in upconversion luminescence. The synthesis of these ultrasmall nanoparticles requires a sophisticated, optimized and reproducible protocol so that the size and crystallinity can be well controlled. Abstract Full text PDF References Request permissions Terahertz Sensing Based on Floating Bilayer Metasurface with Toroidal Dipole Resonance Toward Ultra-High Sensitivity Xiaoxuan Liu, Binggang Xiao, Jianyuan Qin 2400785 First Published: 03 July 2024 Terahertz Sensing Based on Floating Bilayer Metasurface with Toroidal Dipole Resonance Toward Ultra-High Sensitivity Issue 24, 2024 This study proposes a novel metasurface that concentrates near-field energy on the analyte and metal atoms by floating the metal atoms. The sensitivity is 362 GHz RIU−1, 2.6 times higher than that of the common metasurface. The frequency shift reaches 86 GHz as the chlorothalonil concentration increases from 0 to 100 mg dL−1, 6.6 times higher than that of the common metasurface. Abstract Full text PDF References Request permissions PA2PbBr4/MAPbBr3 Heterojunction X-Ray Detector with Enhanced Sensitivity and Excellent Self-Powered Functionality Ningfang He, Longzhen Zhang, Xin He, Jiahao Guo, Xiaochao Wu, Qingkui Li, Jilin He 2400707 First Published: 08 July 2024 PA2PbBr4/MAPbBr3 Heterojunction X-Ray Detector with Enhanced Sensitivity and Excellent Self-Powered Functionality Issue 24, 2024 PA2PbBr4/MAPbBr3 detector exhibits a dramatically enhanced sensitivity of 3.81 × 104 µC Gy−1 cm−2 at 70 keV X-ray tube voltage and 50 V mm−1 bias, along with an ultra-low detection limit of 11.84 nGy s−1. Moreover, it has exhibited exceptional self-powered X-ray detection capabilities, achieving a remarkable sensitivity of 3562.26 µC Gy−1 cm−2 at 70 keV X-ray tube voltage. Abstract Full text PDF References Request permissions Open Access Exploring the Ultralong Lifetime of Self-matrix 1,10 Phenanthroline and Boron-Based Room Temperature Phosphorescence Carbon Dots for Multiple Applications R. Blessy Pricilla, Pavel Urbanek, Jakub Sevcik, David Skoda, Jan Antos, Lukas Munster, Eva Domincova-Bergerova, Ivo Kuritka 2400753 First Published: 08 July 2024 Exploring the Ultralong Lifetime of Self-matrix 1,10 Phenanthroline and Boron-Based Room Temperature Phosphorescence Carbon Dots for Multiple Applications Issue 24, 2024 The Self matrix ultralong Room temperature phosphorescence carbon dots are achieved using a simple and effective heating approach. The exemplary naked eye phosphorescence of 22 s with an average phosphorescence lifetime of 2.4 s is highly competitive. These dots have been utilized for versatile applications like anticounterfeiting, LEDs, information encryption decryption, and sensing. Abstract Full text PDF References Request permissions Open Access Design of Light-Induced Solid-State Plasmonic Rulers via Tethering Photoswitchable Molecular Machines to Gold Nanostructures Displaying Angstrom Length Resolution Sarah R. Langlais, Sumon Hati, M. Vitoria Simas, Jingzhi Pu, Barry B. Muhoberac, Rajesh Sardar 2400801 First Published: 05 July 2024 Design of Light-Induced Solid-State Plasmonic Rulers via Tethering Photoswitchable Molecular Machines to Gold Nanostructures Displaying Angstrom Length Resolution Issue 24, 2024 This work introduces the construction of solid-state plasmonic rulers (PR) by connecting sharp-tip gold nanostructures and self-assembled monolayers of alkylthiols, which contain photoswitchable molecular machines, with an Å-level resolution. The working mechanism for this unique PR is established as dipole–dipole interactions between the highly dipolar molecular machines and the dipole of the nanostructures. Together, this work represents the fabrication of next-generation plasmonic rulers, which hold great promise for advanced, plasmonic-based sensors and optoelectronic device fabrication. Abstract Full text PDF References Request permissions Open Access Electron Beam Restructuring of Quantum Emitters in Hexagonal Boron Nitride Sergei Nedić, Karin Yamamura, Angus Gale, Igor Aharonovich, Milos Toth 2400908 First Published: 27 June 2024 Electron Beam Restructuring of Quantum Emitters in Hexagonal Boron Nitride Issue 24, 2024 Time-resolved cathodoluminescence (CL) spectroscopy is used to investigate the kinetics of B-center generation in hexagonal boron nitride (hBN). B-center generation is accompanied by quenching of a carbon-related emission at ≈305 nm. Both processes are rate-limited by electromigration of defects in the hBN lattice. Problems limiting the efficacy of the emitter generation method are also identified and solved using optimized methodology. Abstract Full text PDF References Request permissions Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption Yang Zhang, Hong-Ming Chen, Mei-Jin Lin 2400898 First Published: 02 July 2024 Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption Issue 24, 2024 Novel binaphthol-derived imide dyes with C1 axial chirality and racemism-enhanced emission are developed, which display chiral self-discrimination-induced luminescence vapochromism for anti-counterfeiting and data encryption. Abstract Full text PDF References Request permissions Open Access Cholesteric Liquid Crystal-Mediated Chiral Plasmonic Films with Strong Chiroptical Response, Dynamic Tunability, and Reversible Thermal Reconfigurability Jung Young Jung, Min Jeong Shin, Baekman Kim, Ui Jeong Pyo, Jin Gyeong Son, Dong Ki Yoon, Sang Woo Han 2400760 First Published: 26 June 2024 Cholesteric Liquid Crystal-Mediated Chiral Plasmonic Films with Strong Chiroptical Response, Dynamic Tunability, and Reversible Thermal Reconfigurability Issue 24, 2024 Chiral plasmonic films with strong chiroptical responses, dynamic optical tunability, and highly reversible thermal configurability are fabricated by the construction of the chiral assembly of gold nanorods via a cholesteric liquid crystal template-mediated approach. Abstract Full text PDF References Request permissions Synergistic Effect of Zn2+ Cation Doping and Te2− Anion Passivation on CsPbBrxI3-x Nanocrystals for Efficient Perovskite Light-Emitting Diodes Rongwen Wang, Xi Wang, Jinming Ma, Xiangfu Liu, Chengxu Lu, Jibin Zhang, Guoli Tu 2400883 First Published: 25 June 2024 Synergistic Effect of Zn2+ Cation Doping and Te2− Anion Passivation on CsPbBrxI3-x Nanocrystals for Efficient Perovskite Light-Emitting Diodes Issue 24, 2024 Mixed halide CsPbBrxI3-x NCs are modified by a synergistic strategy of Zn2+ ion doping and Te2− ion passivation. The Zn2+/Te2− co-modified CsPbBrxI3-x NCs exhibit excellent stability against light radiation, high temperatures, and humidity. The pure-red PeLEDs based on these NCs exhibit exceptional spectral stability with a peak external quantum efficiency of 16%. Abstract Full text PDF References Request permissions Open Access Symmetry-Determined Lasing from Incommensurate Moiré Nanoparticle Lattices Fabio M. Fasanelli, Francisco Freire-Fernández, Teri W. Odom 2400797 First Published: 21 June 2024 Symmetry-Determined Lasing from Incommensurate Moiré Nanoparticle Lattices Issue 24, 2024 This paper describes how the symmetry of moiré plasmonic nanoparticle lattice cavities can be used to predict multidirectional lasing characteristics over a broad wavelength and angle range. Incommensurate moiré lattices combine the advantages of aperiodic lattices with those of Bravais lattices for light-based technologies. Abstract Full text PDF References Request permissions UV-Triggered Optical Asymmetry Modification of Gold Nanorods Helical Assemblies in a Cholesteric Liquid Crystal Host Yang Liu, Guangjie Lin, Yongguang Chen, Xiyang Wei, Mingjuan Du, Yongfang Zhang, Zhaoling Li, Lina Zhao 2400862 First Published: 17 June 2024 UV-Triggered Optical Asymmetry Modification of Gold Nanorods Helical Assemblies in a Cholesteric Liquid Crystal Host Issue 24, 2024 This work employs a blending approach to study the helical assemblies of gold nanorods (Au NRs) within a phototunable cholesteric liquid crystal (CLC) host and demonstrates the modulation of their morphological asymmetry by the use of UV irradiation and discusses the resulting optical asymmetry changes in extinction spectra, CD spectra, near-field enhancement distributions and g-factor. Abstract Full text PDF References Request permissions Robust Deep UV Photodetectors Based on One-Step-Grown Polycrystalline Ga2O3 Film via Pulsed Laser Deposition toward Extreme-Environment Application Hong Huang, Haoran Yin, Keju Han, Yilin Wang, Zhiwei Wang, Xiao Feng, Yanni Zou, Xuanze Zhou, Guangwei Xu, Xiaohu Hou, Xiaolong Zhao, Shibing Long 2400788 First Published: 17 June 2024 Robust Deep UV Photodetectors Based on One-Step-Grown Polycrystalline Ga2O3 Film via Pulsed Laser Deposition toward Extreme-Environment Application Issue 24, 2024 Deep Ultraviolet (DUV) photodetectors employed in extreme conditions, e.g., flame detection and space exploration, face challenges of performance degradation caused by high/low-temperature transformation. One-step-grown polycrystalline β-Ga2O3 films are utilized for DUV detection, offering an efficient solution to develop robust DUV photodetectors with excellent photoresponse performance, high durability, and stability for extreme-condition applications. Abstract Full text PDF References Request permissions Open Access Sub-Micron Diffractive Optical Elements Facilitated by Intrinsic Deswelling of Auxetic Liquid Crystal Elastomers Thomas Moorhouse, Thomas Raistrick 2400866 First Published: 27 June 2024 Sub-Micron Diffractive Optical Elements Facilitated by Intrinsic Deswelling of Auxetic Liquid Crystal Elastomers Issue 24, 2024 This article presents sub-micron pitch diffractive optical elements produced via the anisotropic deswelling of liquid crystal elastomers (LCEs). A pitch tunability of +31% or −33% is achieved via heating (depending on grating orientation). A pitch tunability of 167% is achieved via straining. A growth in surface feature height with strain is observed confirming a negative Poisson-ratio on nanometer length-scales. Abstract Full text PDF References Request permissions Open Access Low Amplified Spontaneous Emission Threshold from Solution Processable Excited-State Intramolecular Proton Transfer Chromophores Vijay P. Rahane, Atul Shukla, Ras Baizureen Roseli, Alexander R. Ireland, Innes Gale, Elizabeth H. Krenske, Evan G. Moore, Ebinazar B. Namdas, Nidhi Jain, Shih-Chun Lo 2400840 First Published: 17 June 2024 Low Amplified Spontaneous Emission Threshold from Solution Processable Excited-State Intramolecular Proton Transfer Chromophores Issue 24, 2024 The incorporation of fluorene and phenyl-carbazole moieties (at the para-position to the hydroxyl group) into the HBT-based ESIPT chromophore results in reduced amplified spontaneous emission (ASE) thesholds within the yellow–orange to red color range. These new chromophores exhibit efficient ESIPT processes, and high thermal and photo-stabilities as well as high solid-state photoluminescence quantum yields, surpassing their parent HBT. Abstract Full text PDF References Request permissions Multicolor Electrochromic Metamaterials Based on Mie Scatterer Nanospheres Yanlong Zhao, Qinyuan Jiang, Xueke Wu, Di Gao, Ping Zhu, Yunrui Li, Fei Wang, Ya Huang, Run Li, Siming Zhao, Zhuojing Zhao, Aike Xi, Baoshun Wang, Rufan Zhang 2400838 First Published: 12 June 2024 Multicolor Electrochromic Metamaterials Based on Mie Scatterer Nanospheres Issue 24, 2024 The optical nanostructure of Mie scatterer nanospheres is incorporated into electrochromic polymers to extend their color gamut in electrochromism. A near full-color gamut can be further achieved through a nano-disperse strategy. This metamaterial combines structural coloration with electrochromic coloration, exhibiting vibrant and dynamic colors with angle-independent properties. That shows its potential for application in smart displays. Abstract Full text PDF References Request permissions Analysis of Optical Temperature Sensing Performance of Alkali Metal Doped Na0.5Gd0.5TiO3: Yb, Er Based on Judd-Ofelt Theory and First Principles Calculations Li Yuan, Xu Wang, Yanlin Tang, Ruirui Cui, Chaoyong Deng 2400893 First Published: 17 June 2024 Analysis of Optical Temperature Sensing Performance of Alkali Metal Doped Na0.5Gd0.5TiO3: Yb, Er Based on Judd-Ofelt Theory and First Principles Calculations Issue 24, 2024 The effects of the doping of alkali metal on the sensitivity of optical temperature measurement in Li+/K+ doped Na0.5Gd0.5TiO3: Yb, Er are explored by the combination of Judd-Ofelt theory and first-principles calculations. A dopant that exhibits small electronegativity and has a distinct ion radius is beneficial for improving the sensitivity of optical temperature measurement. Abstract Full text PDF References Request permissions Controllable Regulation of Inorganic-Layer Thickness of Polar 2D Homologue Perovskites toward Self-Powered Polarization-Sensitive Photodetection Huaimin Ni, Haojie Xu, Yi Liu, Xi Zeng, Wuqian Guo, Pengfei Zhu, Zihao Zhao, Hao Rong, Junhua Luo, Zhihua Sun 2401011 First Published: 10 June 2024 Controllable Regulation of Inorganic-Layer Thickness of Polar 2D Homologue Perovskites toward Self-Powered Polarization-Sensitive Photodetection Issue 24, 2024 A series of polar 2D anisotropic perovskite derivatives are constructed by using the method of layer regulation. By weakening the quantum confinement effect, the photoelectric performance is improved, and the sensitive self-powered polarized light detection is realized using BPVE. Therefore, this method provides a favorable reference for constructing polarization-sensitive materials. Abstract Full text PDF References Request permissions Distorted Lead-Free Germanium-Based Perovskite Single-Crystals for Stable and Efficient X-Ray Detection and Imaging Ming Chen, Xiaokai Zheng, Yaohui Li, Xiaofeng Dong, Jiacheng Pi, Depeng Chu, Naiming Liu, Binxia Jia, Yuqian Liang, Xiaojie Zhang, Zeqin Zhao, Jinglu Hao, Lei Zhao, Ziyang Feng, Mingyue Wei, Ruixin Shi, Shengzhong(Frank) Liu, Yucheng Liu 2401028 First Published: 17 June 2024 Distorted Lead-Free Germanium-Based Perovskite Single-Crystals for Stable and Efficient X-Ray Detection and Imaging Issue 24, 2024 A distorted 3D perovskite MAGeI3 single crystal (SC) is designed and grown by gradient cooling method. The unencapsulated MAGeI3 SC detectors not only possess high sensitivity but also have superior long-term working stability. Moreover, the detectors achieve a high resolution of 7.2 lp mm−1 in X-ray imaging even under a low dose rate and at low electric field. Abstract Full text PDF References Request permissions Open Access Construction and Properties of Strong Near-IR Absorption Photosensitizers Fei Cheng, Taotao Qiang, Tony D. James 2401012 First Published: 11 June 2024 Construction and Properties of Strong Near-IR Absorption Photosensitizers Issue 24, 2024 Strong near-infrared absorption photosensitizer An-cyclic-BDP is synthesized through the rhodium-catalyzed alkyne cyclization reaction. T-Π-CSI and SOCT dual strategies effectively enhance the intersystem crossing ability of the photosensitizer. Additionally, An-cyclic-BDP exhibits excellent photothermal conversion capability. This is a new approach to the development of near-infrared photosensitizers with synergistic photodynamic and photothermal therapy effects. Abstract Full text PDF References Request permissions Structure-Dependent Photoluminescence and Chemiluminescence Emission Enhancement in Ag25 Nanoclusters Mengmeng Jing, Kaiyang Kuang, Chunmin Fang, Chuanjun Zhou, Zhuoyuan Li, Shuang Chen, Manzhou Zhu 2400940 First Published: 06 June 2024 Structure-Dependent Photoluminescence and Chemiluminescence Emission Enhancement in Ag25 Nanoclusters Issue 24, 2024 This study explores how surface ligands affect the structure and luminescence of metal nanoclusters (NCs), focusing on three [Ag25(SPhCl)16−xClx(DPPB)6]2+ variants with different thiol and Cl ligand ratios. Ag25-4Cl shows the highest photoluminescence and chemiluminescence, with significantly enhanced quantum yield due to structural compression by smaller Cl ligands. These findings suggest broader implications for NC technology in luminescence and radical-scavenging applications. Abstract Full text PDF References Request permissions Tunable Multicolor Emission and High Thermal Stability in Single-Matrix Luminescent Crystals Based on Calcium Perovskites for Advanced Solid-State Lighting Applications Hu Wang, Yuexiao Pan, Yihong Ding, Hongzhou Lian, Jun Lin, Liyi Li 2400935 First Published: 10 June 2024 Tunable Multicolor Emission and High Thermal Stability in Single-Matrix Luminescent Crystals Based on Calcium Perovskites for Advanced Solid-State Lighting Applications Issue 24, 2024 The dual pathways of effective energy transfer, involving the self-trapped exciton of the matrix Cs2CaCl4·2H2O and the s-p transition of Sn2+ to Mn2+ ions, both contribute to the synergistic generation of composite white lights with tunable colors. Abstract Full text PDF References Request permissions New Finding of Inversed Right-Handed Helix in Dynamically Rotational Evaporation-Induced Iridescent CNC Film Daikun Jia, Dandan Zhu, Zhen Zheng, Xinling Wang 2400927 First Published: 17 June 2024 New Finding of Inversed Right-Handed Helix in Dynamically Rotational Evaporation-Induced Iridescent CNC Film Issue 24, 2024 A cellulose nanocrystal film with a twisted right-handed helical structure is developed through a simple rotational evaporation-induced self-assembly method. The film exhibits inverted chiroptical activity such as intense negative circular dichroism signal and ambidextrous reflections of both left-handed and right-handed circularly polarized light while maintaining its intrinsic structural color, and its right-handed helix is observed by scanning electron microscope. Abstract Full text PDF References Request permissions