@article{61523, abstract = {{AbstractMetasurface holography offers a powerful approach for manipulating wavefronts at the nano and micro scale. Extensive research has been conducted to enhance the multiplexing capacity for diverse wavefronts. However, the independence of multiplexed channels is fundamentally restricted in techniques using single‐layer metasurfaces, resulting in unavoidable crosstalk and the need for post‐filtering of the output wavefronts. Here, a universal wavefront multiplexing concept is presented based on non‐injective transformation. By employing joint optimization on two metasurfaces, different channels can be independently designed without any constraints on the output wavefronts. To validate this approach, ultra‐compact orbital angular momentum (OAM) sorters are designed. In these experiments, the output beams from different channels can be independently mapped to 2D positions with high fineness. In another application of wavefront‐multiplexed holography, 10‐channel multiplexing is experimentally achieved with minimal crosstalk and without the need for post‐processing. These results demonstrate the independence between channels enabled by the non‐injective transformation in the method. The precise wavefront control and high multiplexing capacity underscore its potential for scalable wavefront manipulation devices.}}, author = {{Jin, Xiao and Zentgraf, Thomas}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, publisher = {{Wiley}}, title = {{{Independent Wavefront Multiplexing with Metasurfaces via Non‐Injective Transformation}}}, doi = {{10.1002/adma.202511823}}, volume = {{38}}, year = {{2026}}, } @article{62668, abstract = {{AbstractFacile synthesis of porous carbon with high yield and high specific surface area (SSA) from low‐cost molecular precursors offers promising opportunities for their industrial applications. However, conventional activation methods using potassium and sodium hydroxides or carbonates suffer from low yields (<20%) and poor control over porosity and composition especially when high SSAs are targeted (>2000 m2 g−1) because nanopores are typically created by etching. Herein, a non‐etching activation strategy is demonstrated using cesium salts of low‐cost carboxylic acids as the sole precursor in producing porous carbons with yields of up to 25% and SSAs reaching 3008 m2 g−1. The pore size and oxygen content can be adjusted by tuning the synthesis temperature or changing the molecular precursor. Mechanistic investigation unravels the non‐classical role of cesium as an activating agent. The cesium compounds that form in situ, including carbonates, oxides, and metallic cesium, have extremely low work function enabling electron injection into organic/carbonaceous framework, promoting condensation, and intercalation of cesium ions into graphitic stacks forming slit pores. The resulting porous carbons deliver a high capacity of 252 mAh g−1 (567 F g−1) and durability of 100 000 cycles as cathodes of Zn‐ion capacitors, showing their potential for electrochemical energy storage.}}, author = {{Li, Jiaxin and Xu, Yaolin and Li, Pengzhou and Völkel, Antje and Saldaña, Fernando Igoa and Antonietti, Markus and Lopez Salas, Nieves and Odziomek, Mateusz}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, number = {{18}}, publisher = {{Wiley}}, title = {{{Beyond Conventional Carbon Activation: Creating Porosity without Etching Using Cesium Effect}}}, doi = {{10.1002/adma.202311655}}, volume = {{36}}, year = {{2024}}, } @article{46018, author = {{Su, Ran and Zhang, Jiahui and Wong, Vienna and Zhang, Dawei and Yang, Yong and Luo, Zheng‐Dong and Wang, Xiaojing and Wen, Hui and Liu, Yang and Seidel, Jan and Yang, Xiaolong and Pan, Ying and Li, Fa‐tang}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, publisher = {{Wiley}}, title = {{{Engineering Sub‐Nanometer Hafnia‐Based Ferroelectric to Break The Scaling Relation for High‐Efficiency Piezocatalytic Water Splitting}}}, doi = {{10.1002/adma.202303018}}, year = {{2023}}, } @article{62671, abstract = {{AbstractCarbonaceous electrocatalysts offer advantages over metal‐based counterparts, being cost‐effective, sustainable, and electrochemically stable. Their high surface area increases reaction kinetics, making them valuable for environmental applications involving contaminant removal. However, their rational synthesis is challenging due to the applied high temperatures and activation steps, leading to disordered materials with limited control over doping. Here, a new synthetic pathway using carbon oxide precursors and tin chloride as a p‐block metal salt melt is presented. As a result, highly porous oxygen‐rich carbon sheets (with a surface area of 1600 m2 g−1) are obtained at relatively low temperatures (400 °C). Mechanistic studies reveal that Sn(II) triggers reductive deoxygenation and concomitant condensation/cross‐linking, facilitated by the Sn(II) → Sn(IV) transition. Due to their significant surface area and oxygen doping, these materials demonstrate exceptional electrocatalytic activity in the nitrate‐to‐ammonia conversion, with an ammonia yield rate of 221 mmol g−1 h−1 and a Faradic efficiency of 93%. These results surpass those of other carbon‐based electrocatalysts. In situ Raman studies reveal that the reaction occurs through electrochemical hydrogenation, where active hydrogen is provided by water reduction. This work contributes to the development of carbonaceous electrocatalysts with enhanced performance for sustainable environmental applications.}}, author = {{Zheng, Xinyue and Tian, Zhihong and Bouchal, Roza and Antonietti, Markus and Lopez Salas, Nieves and Odziomek, Mateusz}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, number = {{13}}, publisher = {{Wiley}}, title = {{{Tin (II) Chloride Salt Melts as Non‐Innocent Solvents for the Synthesis of Low‐Temperature Nanoporous Oxo‐Carbons for Nitrate Electrochemical Hydrogenation}}}, doi = {{10.1002/adma.202311575}}, volume = {{36}}, year = {{2023}}, } @article{33689, author = {{Raghuwanshi, Mohit and Chugh, Manjusha and Sozzi, Giovanna and Kanevce, Ana and Kühne, Thomas and Mirhosseini, Hossein and Wuerz, Roland and Cojocaru‐Mirédin, Oana}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, number = {{37}}, publisher = {{Wiley}}, title = {{{Fingerprints Indicating Superior Properties of Internal Interfaces in Cu(In,Ga)Se 2 Thin‐Film Solar Cells}}}, doi = {{10.1002/adma.202203954}}, volume = {{34}}, year = {{2022}}, } @article{40558, author = {{Odziomek, Mateusz and Giusto, Paolo and Kossmann, Janina and Tarakina, Nadezda V. and Heske, Julian and Rivadeneira, Salvador M. and Keil, Waldemar and Schmidt, Claudia and Mazzanti, Stefano and Savateev, Oleksandr and Perdigón‐Toro, Lorena and Neher, Dieter and Kühne, Thomas D. and Antonietti, Markus and Lopez Salas, Nieves}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, number = {{40}}, publisher = {{Wiley}}, title = {{{“Red Carbon”: A Rediscovered Covalent Crystalline Semiconductor}}}, doi = {{10.1002/adma.202206405}}, volume = {{34}}, year = {{2022}}, } @article{32068, abstract = {{Inspired by plant grafting, grafted vortex beams can be formed through grafting two or more helical phase profiles of optical vortex beams. Recently, grafted perfect vortex beams (GPVBs) have attracted much attention due to their unique optical properties and potential applications. However, the current method to generate and manipulate GPVBs requires a complex and bulky optical system, hindering further investigation and limiting its practical applications. Here, a compact metasurface approach for generating and manipulating GPVBs in multiple channels is proposed and demonstrated, which eliminates the need for such a complex optical setup. A single metasurface is utilized to realize various superpositions of GPVBs with different combinations of topological charges in four channels, leading to asymmetric singularity distributions. The positions of singularities in the superimposed beam can be further modulated by introducing an initial phase difference in the metasurface design. The work demonstrates a compact metasurface platform that performs a sophisticated optical task that is very challenging with conventional optics, opening opportunities for the investigation and applications of GPVBs in a wide range of emerging application areas, such as singular optics and quantum science.}}, author = {{Ahmed, Hammad and Intaravanne, Yuttana and Ming, Yang and Ansari, Muhammad Afnan and Buller, Gerald S. and Zentgraf, Thomas and Chen, Xianzhong}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, number = {{30}}, publisher = {{Wiley}}, title = {{{Multichannel Superposition of Grafted Perfect Vortex Beams}}}, doi = {{10.1002/adma.202203044}}, volume = {{34}}, year = {{2022}}, } @article{33687, author = {{Odziomek, Mateusz and Giusto, Paolo and Kossmann, Janina and Tarakina, Nadezda V. and Heske, Julian Joachim and Rivadeneira, Salvador M. and Keil, Waldemar and Schmidt, Claudia and Mazzanti, Stefano and Savateev, Oleksandr and Perdigón‐Toro, Lorena and Neher, Dieter and Kühne, Thomas and Antonietti, Markus and López‐Salas, Nieves}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, number = {{40}}, publisher = {{Wiley}}, title = {{{“Red Carbon”: A Rediscovered Covalent Crystalline Semiconductor}}}, doi = {{10.1002/adma.202206405}}, volume = {{34}}, year = {{2022}}, } @article{26391, author = {{Xu, Yazhi and Wang, Xudong and Zhang, Wei and Schäfer, Lisa and Reindl, Johannes and vom Bruch, Felix and Zhou, Yuxing and Evang, Valentin and Wang, Jiang‐Jing and Deringer, Volker L. and Ma, En and Wuttig, Matthias and Mazzarello, Riccardo}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, title = {{{Materials Screening for Disorder‐Controlled Chalcogenide Crystals for Phase‐Change Memory Applications}}}, doi = {{10.1002/adma.202006221}}, year = {{2021}}, } @article{40434, author = {{Klement, Philip and Dehnhardt, Natalie and Dong, Chuan-Ding and Dobener, Florian and Bayliff, Samuel and Winkler, Julius and Hofmann, Detlev M. and Klar, Peter J. and Schumacher, Stefan and Chatterjee, Sangam and Heine, Johanna}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, number = {{23}}, publisher = {{Wiley}}, title = {{{Atomically Thin Sheets of Lead‐Free 1D Hybrid Perovskites Feature Tunable White‐Light Emission from Self‐Trapped Excitons}}}, doi = {{10.1002/adma.202100518}}, volume = {{33}}, year = {{2021}}, } @article{23605, author = {{Paulsen, Bryan D. and Wu, Ruiheng and Takacs, Christopher J. and Steinrück, Hans-Georg and Strzalka, Joseph and Zhang, Qingteng and Toney, Michael F. and Rivnay, Jonathan}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, pages = {{2003404}}, title = {{{Time‐Resolved Structural Kinetics of an Organic Mixed Ionic–Electronic Conductor}}}, doi = {{10.1002/adma.202003404}}, volume = {{32}}, year = {{2020}}, } @article{40583, author = {{Antonietti, Markus and Lopez Salas, Nieves and Primo, Ana}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, keywords = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}}, number = {{13}}, publisher = {{Wiley}}, title = {{{Adjusting the Structure and Electronic Properties of Carbons for Metal‐Free Carbocatalysis of Organic Transformations}}}, doi = {{10.1002/adma.201805719}}, volume = {{31}}, year = {{2018}}, } @article{1731, author = {{Zentgraf, Thomas and Valentine, Jason and Tapia, Nicholas and Li, Jensen and Zhang, Xiang}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, number = {{23}}, pages = {{2561--2564}}, publisher = {{Wiley-Blackwell}}, title = {{{An Optical “Janus” Device for Integrated Photonics}}}, doi = {{10.1002/adma.200904139}}, volume = {{22}}, year = {{2010}}, } @article{22616, author = {{Hinderling, C. and Keles, Y. and Stöckli, T. and Knapp, H. F. and de los Arcos de Pedro, Maria Teresa and Oelhafen, P. and Korczagin, I. and Hempenius, M. A. and Vancso, G. J. and Pugin, R. and Heinzelmann, H.}}, issn = {{0935-9648}}, journal = {{Advanced Materials}}, pages = {{876--879}}, title = {{{Organometallic Block Copolymers as Catalyst Precursors for Templated Carbon Nanotube Growth}}}, doi = {{10.1002/adma.200306447}}, year = {{2004}}, }