4.8 Article

Electronic properties of single-layer tungsten disulfide on epitaxial graphene on silicon carbide

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NANOSCALE
卷 9, 期 42, 页码 16412-16419

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr05495e

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资金

  1. European Union's Horizon research and innovation program [696656]
  2. German Research Foundation (DFG) [1459]
  3. PRIN project [20105ZZTSE_003]

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This work reports an electronic and micro-structural study of an appealing system for optoelectronics: tungsten disulfide (WS2) on epitaxial graphene (EG) on SiC(0001). The WS2 is grown via chemical vapor deposition (CVD) onto the EG. Low-energy electron diffraction (LEED) measurements assign the zero-degree orientation as the preferential azimuthal alignment for WS2/EG. The valence-band (VB) structure emerging from this alignment is investigated by means of photoelectron spectroscopy measurements, with both high space and energy resolution. We find that the spin-orbit splitting of monolayer WS2 on graphene is of 462 meV, larger than what is reported to date for other substrates. We determine the value of the work function for the WS2/EG to be 4.5 +/- 0.1 eV. A large shift of the WS2 VB maximum is observed as well, due to the lowering of the WS2 work function caused by the donor-like interfacial states of EG. Density functional theory (DFT) calculations carried out on a coincidence supercell confirm the experimental band structure to an excellent degree. X-ray photoemission electron microscopy (XPEEM) measurements performed on single WS2 crystals confirm the van der Waals nature of the interface coupling between the two layers. In virtue of its band alignment and large spin-orbit splitting, this system gains strong appeal for optical spin-injection experiments and opto-spintronic applications in general.

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Zadrozny, A. J. Zannelli, M. Zanolin, M. Zeeshan, S. Zeidler, T. Zelenova, J. -P. Zendri, M. Zevin, J. Zhang, L. Zhang, R. Zhang, T. Zhang, Y. Zhang, C. Zhao, Yue Zhao, Yuhang Zhao, Y. Zheng, H. Zhong, R. Zhou, X. J. Zhu, Z. -H. Zhu, A. B. Zimmerman, M. E. Zucker, J. Zweizig

Summary: The global network of gravitational-wave observatories has expanded to include five detectors, providing ample data and science products for analysis and research.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2023)

Article Astronomy & Astrophysics

Virgo detector characterization and data quality: tools

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Di Giovanni, M. Di Giovanni, T. Di Girolamo, A. Di Lieto, A. Di Michele, S. Di Pace, I Di Palma, F. Di Renzo, L. D'Onofrio, M. Drago, J-G Ducoin, U. Dupletsa, O. Durante, D. D'Urso, P-A Duverne, M. Eisenmann, L. Errico, D. Estevez, F. Fabrizi, F. Faedi, V Fafone, S. Farinon, G. Favaro, M. Fays, E. Fenyvesi, I Ferrante, F. Fidecaro, P. Figura, A. Fiori, I Fiori, R. Fittipaldi, V Fiumara, R. Flaminio, J. A. Font, S. Frasca, F. Frasconi, A. Freise, O. Freitas, G. G. Fronze, B. U. Gadre, R. Gamba, B. Garaventa, F. Garufi, G. Gemme, A. Gennai, Archisman Ghosh, B. Giacomazzo, L. Giacoppo, P. Giri, F. Gissi, S. Gkaitatzis, B. Goncharov, M. Gosselin, R. Gouaty, A. Grado, M. Granata, V Granata, G. Greco, G. Grignani, A. Grimaldi, S. J. Grimm, P. Gruning, D. Guerra, G. M. Guidi, G. Guixe, Y. Guo, P. Gupta, L. Haegel, O. Halim, O. Hannuksela, T. Harder, K. Haris, J. Harms, B. Haskell, A. Heidmann, H. Heitmann, P. Hello, G. Hemming, E. Hennes, S. Hild, D. Hofman, V Hui, B. Idzkowski, A. Iess, P. Iosif, T. Jacqmin, P-E Jacquet, S. P. Jadhav, J. Janquart, K. Janssens, P. Jaranowski, V Juste, C. Kalaghatgi, C. Karathanasis, S. Katsanevas, F. Kefelian, N. Khetan, G. Koekoek, S. Koley, M. Kolstein, A. Krolak, P. Kuijer, P. Lagabbe, D. Laghi, M. Lalleman, A. Lamberts, I La Rosa, A. Lartaux-Vollard, C. Lazzaro, P. Leaci, A. Lemaitre, M. Lenti, E. Leonova, N. Leroy, N. Letendre, K. Leyde, F. Linde, L. London, A. Longo, M. Lopez Portilla, M. Lorenzini, V Loriette, G. Losurdo, D. Lumaca, A. Macquet, C. Magazzu, M. Magnozzi, E. Majorana, I Maksimovic, N. Man, V Mangano, M. Mantovani, M. Mapelli, F. Marchesoni, D. Marin Pina, F. Marion, A. Marquina, S. Marsat, F. Martelli, M. Martinez, V Martinez, A. Masserot, S. Mastrogiovanni, Q. Meijer, A. Menendez-Vazquez, L. Mereni, M. Merzougui, A. Miani, C. Michel, L. Milano, A. Miller, B. Miller, E. Milotti, Y. Minenkov, Li M. Mir, M. Miravet-Tenes, M. Montani, F. Morawski, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Suvodip Mukherjee, R. Musenich, A. Nagar, V Napolano, I Nardecchia, H. Narola, L. Naticchioni, J. Neilson, C. Nguyen, S. Nissanke, E. Nitoglia, F. Nocera, G. Oganesyan, C. Olivetto, G. Pagano, G. Pagliaroli, C. Palomba, P. T. H. Pang, F. Pannarale, F. Paoletti, A. Paoli, A. Paolone, G. Pappas, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, B. Patricelli, R. Pedurand, M. Pegoraro, A. Perego, A. Pereira, C. Perigois, A. Perreca, S. Perries, D. Pesios, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, L. Pierini, V Pierro, G. Pillant, M. Pillas, F. Pilo, L. Pinard, I. M. Pinto, M. Pinto, K. Piotrzkowski, A. Placidi, E. Placidi, W. Plastino, R. Poggiani, E. Polini, E. K. Porter, R. Poulton, M. Pracchia, T. Pradier, M. Principe, G. A. Prodi, P. Prosposito, A. Puecher, M. Punturo, F. Puosi, P. Puppo, G. Raaijmakers, N. Radulesco, P. Rapagnani, M. Razzano, T. Regimbau, L. Rei, P. Rettegno, B. Revenu, A. Reza, F. Ricci, G. Riemenschneider, S. Rinaldi, F. Robinet, A. Rocchi, L. Rolland, M. Romanelli, R. Romano, A. Romero, S. Ronchini, L. Rosa, D. Rosinska, S. Roy, D. Rozza, P. Ruggi, J. Sadiq, O. S. Salafia, L. Salconi, F. Salemi, A. Samajdar, N. Sanchis-Gual, A. Sanuy, B. Sassolas, S. Sayah, S. Schmidt, M. Seglar-Arroyo, D. Sentenac, V Sequino, Y. Setyawati, A. Sharma, N. S. Shcheblanov, M. Sieniawska, L. Silenzi, N. Singh, A. Singha, V Sipala, J. Soldateschi, K. Soni, V Sordini, F. Sorrentino, N. Sorrentino, R. Soulard, V Spagnuolo, M. Spera, P. Spinicelli, C. Stachie, D. A. Steer, J. Steinlechner, S. Steinlechner, N. Stergioulas, G. Stratta, M. Suchenek, A. Sur, B. L. Swinkels, P. Szewczyk, M. Tacca, A. J. Tanasijczuk, E. N. Tapia San Martin, C. Taranto, A. E. Tolley, M. Tonelli, A. Torres-Forne, I. Tosta e Melo, A. Trapananti, F. Travasso, M. Trevor, M. C. Tringali, L. Troiano, A. Trovato, L. Trozzo, K. W. Tsang, K. Turbang, M. Turconi, A. Utina, M. Valentini, N. van Bakel, M. van Beuzekom, M. van Dael, J. F. van den Brand, C. van den Broeck, H. van Haevermaet, J. van Heijningen, N. van Remortel, M. Vardaro, M. Vasuth, G. Vedovato, D. Verkindt, P. Verma, F. Vetrano, A. Vicere, V. Villa-Ortega, J-Y Vinet, A. Virtuoso, H. Vocca, R. C. Walet, M. Was, A. R. Williamson, J. L. Willis, A. Zadrozny, T. Zelenova, J-P Zendri

Summary: Detector characterization and data quality studies are crucial for the scientific exploitation of the joint dataset collected by the global network of ground-based gravitational-wave detectors. This article reviews the tools used by the Virgo DetChar group during the O3 run.

CLASSICAL AND QUANTUM GRAVITY (2023)

Article Astronomy & Astrophysics

Virgo detector characterization and data quality: results from the O3 run

F. Acernese, M. Agathos, A. Ain, S. Albanesi, A. Allocca, A. Amato, T. Andrade, N. Andres, M. Andres-Carcasona, T. Andric, S. Ansoldi, S. Antier, T. Apostolatos, E. Z. Appavuravther, M. Arene, N. Arnaud, M. Assiduo, S. Assis de Souza Melo, P. Astone, F. Aubin, S. Babak, F. Badaracco, M. K. Bader, S. Bagnasco, J. Baird, T. Baka, G. Ballardin, G. Baltus, B. Banerjee, C. Barbieri, P. Barneo, F. Barone, M. Barsuglia, D. Barta, A. Basti, M. Bawaj, M. Bazzan, F. Beirnaert, M. Bejger, I Belahcene, V Benedetto, M. Berbel, S. Bernuzzi, D. Bersanetti, A. Bertolini, U. Bhardwaj, A. Bianchi, S. Bini, M. Bischi, M. Bitossi, M-A Bizouard, F. Bobba, M. Boer, G. Bogaert, M. Boldrini, L. D. Bonavena, F. Bondu, R. Bonnand, B. A. Boom, V Boschi, V Boudart, Y. Bouffanais, A. Bozzi, C. Bradaschia, M. Branchesi, M. Breschi, T. Briant, A. Brillet, J. Brooks, G. Bruno, F. Bucci, T. Bulik, H. J. Bulten, D. Buskulic, C. Buy, G. S. Cabourn Davies, G. Cabras, R. Cabrita, G. Cagnoli, E. Calloni, M. Canepa, S. Canevarolo, M. Cannavacciuolo, E. Capocasa, G. Carapella, F. Carbognani, M. Carpinelli, G. Carullo, J. Casanueva Diaz, C. Casentini, S. Caudill, F. Cavalier, R. Cavalieri, G. Cella, P. Cerda-Duran, E. Cesarini, W. Chaibi, P. Chanial, E. Chassande-Mottin, S. Chaty, F. Chiadini, G. Chiarini, R. Chierici, A. Chincarini, M. L. Chiofalo, A. Chiummo, S. Choudhary, N. Christensen, G. Ciani, P. Ciecielag, M. Cieslar, M. Cifaldi, R. Ciolfi, F. Cipriano, S. Clesse, F. Cleva, E. Coccia, E. Codazzo, P-F Cohadon, D. E. Cohen, A. Colombo, M. Colpi, L. Conti, I Cordero-Carrion, S. Corezzi, D. Corre, S. Cortese, J-P Coulon, M. Croquette, J. R. Cudell, E. Cuoco, M. Curylo, P. Dabadie, T. Dal Canton, S. Dall'Osso, G. Dalya, B. D'Angelo, S. Danilishin, S. D'Antonio, V Dattilo, M. Davier, D. Davis, J. Degallaix, M. De Laurentis, S. Deleglise, F. De Lillo, D. Dell'Aquila, W. Del Pozzo, F. De Matteis, A. Depasse, R. De Pietri, R. De Rosa, C. De Rossi, R. De Simone, L. Di Fiore, C. Di Giorgio, F. Di Giovanni, M. Di Giovanni, T. Di Girolamo, A. Di Lieto, A. Di Michele, S. Di Pace, I Di Palma, F. Di Renzo, L. D'Onofrio, M. Drago, J-G Ducoin, U. Dupletsa, O. Durante, D. D'Urso, P-A Duverne, M. Eisenmann, L. Errico, D. Estevez, F. Fabrizi, F. Faedi, V Fafone, S. Farinon, G. Favaro, M. Fays, E. Fenyvesi, I Ferrante, F. Fidecaro, P. Figura, A. Fiori, I Fiori, R. Fittipaldi, V Fiumara, R. Flaminio, J. A. Font, S. Frasca, F. Frasconi, A. Freise, O. Freitas, G. G. Fronze, B. U. Gadre, R. Gamba, B. Garaventa, F. Garufi, G. Gemme, A. Gennai, Archisman Ghosh, B. Giacomazzo, L. Giacoppo, P. Giri, F. Gissi, S. Gkaitatzis, B. Goncharov, M. Gosselin, R. Gouaty, A. Grado, M. Granata, V Granata, G. Greco, G. Grignani, A. Grimaldi, S. J. Grimm, P. Gruning, D. Guerra, G. M. Guidi, G. Guixe, Y. Guo, P. Gupta, L. Haegel, O. Halim, O. Hannuksela, T. Harder, K. Haris, J. Harms, B. Haskell, A. Heidmann, H. Heitmann, P. Hello, G. Hemming, E. Hennes, S. Hild, D. Hofman, V Hui, B. Idzkowski, A. Iess, P. Iosif, T. Jacqmin, P-E Jacquet, S. P. Jadhav, J. Janquart, K. Janssens, P. Jaranowski, V Juste, C. Kalaghatgi, C. Karathanasis, S. Katsanevas, F. Kefelian, N. Khetan, G. Koekoek, S. Koley, M. Kolstein, A. Krolak, P. Kuijer, P. Lagabbe, D. Laghi, M. Lalleman, A. Lamberts, I La Rosa, A. Lartaux-Vollard, C. Lazzaro, P. Leaci, A. Lemaitre, M. Lenti, E. Leonova, N. Leroy, N. Letendre, K. Leyde, F. Linde, L. London, A. Longo, M. Lopez Portilla, M. Lorenzini, V Loriette, G. Losurdo, D. Lumaca, A. Macquet, C. Magazzu, M. Magnozzi, E. Majorana, I Maksimovic, N. Man, V Mangano, M. Mantovani, M. Mapelli, F. Marchesoni, D. Marin Pina, F. Marion, A. Marquina, S. Marsat, F. Martelli, M. Martinez, V Martinez, A. Masserot, S. Mastrogiovanni, Q. Meijer, A. Menendez-Vazquez, L. Mereni, M. Merzougui, A. Miani, C. Michel, L. Milano, A. Miller, B. Miller, E. Milotti, Y. Minenkov, L. I. M. Mir, M. Miravet-Tenes, M. Montani, F. Morawski, B. Mours, C. M. Mow-Lowry, S. Mozzon, F. Muciaccia, Suvodip Mukherjee, R. Musenich, A. Nagar, V Napolano, I Nardecchia, H. Narola, L. Naticchioni, J. Neilson, C. Nguyen, S. Nissanke, E. Nitoglia, F. Nocera, G. Oganesyan, C. Olivetto, G. Pagano, G. Pagliaroli, C. Palomba, P. T. H. Pang, F. Pannarale, F. Paoletti, A. Paoli, A. Paolone, G. Pappas, D. Pascucci, A. Pasqualetti, R. Passaquieti, D. Passuello, B. Patricelli, R. Pedurand, M. Pegoraro, A. Perego, A. Pereira, C. Perigois, A. Perreca, S. Perries, D. Pesios, K. S. Phukon, O. J. Piccinni, M. Pichot, M. Piendibene, F. Piergiovanni, L. Pierini, V Pierro, G. Pillant, M. Pillas, F. Pilo, L. Pinard, I. M. Pinto, M. Pinto, K. Piotrzkowski, A. Placidi, E. Placidi, W. Plastino, R. Poggiani, E. Polini, E. K. Porter, R. Poulton, M. Pracchia, T. Pradier, M. Principe, G. A. Prodi, P. Prosposito, A. Puecher, M. Punturo, F. Puosi, P. Puppo, G. Raaijmakers, N. Radulesco, P. Rapagnani, M. Razzano, T. Regimbau, L. Rei, P. Rettegno, B. Revenu, A. Reza, F. Ricci, G. Riemenschneider, S. Rinaldi, F. Robinet, A. Rocchi, L. Rolland, M. Romanelli, R. Romano, A. Romero, S. Ronchini, L. Rosa, D. Rosinska, S. Roy, D. Rozza, P. Ruggi, J. Sadiq, O. S. Salafia, L. Salconi, F. Salemi, A. Samajdar, N. Sanchis-Gual, A. Sanuy, B. Sassolas, S. Sayah, S. Schmidt, M. Seglar-Arroyo, D. Sentenac, V Sequino, Y. Setyawati, A. Sharma, N. S. Shcheblanov, M. Sieniawska, L. Silenzi, N. Singh, A. Singha, V Sipala, J. Soldateschi, K. Soni, V Sordini, F. Sorrentino, N. Sorrentino, R. Soulard, V Spagnuolo, M. Spera, P. Spinicelli, C. Stachie, D. A. Steer, J. Steinlechner, S. Steinlechner, N. Stergioulas, G. Stratta, M. Suchenek, A. Sur, B. L. Swinkels, P. Szewczyk, M. Tacca, A. J. Tanasijczuk, E. N. Tapia San Martin, C. Taranto, A. E. Tolley, M. Tonelli, A. Torres-Forne, I Tosta e Melo, A. Trapananti, F. Travasso, M. Trevor, M. C. Tringali, L. Troiano, A. Trovato, L. Trozzo, K. W. Tsang, K. Turbang, M. Turconi, A. Utina, M. Valentini, N. van Bakel, M. van Beuzekom, M. van Dael, J. F. J. van den Brand, C. van Den Broeck, H. van Haevermaet, J. van Heijningen, N. van Remortel, M. Vardaro, M. Vasuth, G. Vedovato, D. Verkindt, P. Verma, F. Vetrano, A. Vicere, V. Villa-Ortega, J-Y Vinet, A. Virtuoso, H. Vocca, R. C. Walet, M. Was, A. R. Williamson, J. L. Willis, A. Zadrozny, T. Zelenova, J-P Zendri

Summary: The Advanced Virgo detector has contributed to the increase in the number of detected GW signals along with the two Advanced LIGO instruments. The accurate characterization of data quality through detector characterization and data quality activities has led to significant discoveries and waveform exploitation.

CLASSICAL AND QUANTUM GRAVITY (2023)

Article Physics, Applied

Detecting ultrathin ice on materials for optical coatings at cryogenic temperatures

Michele Magnozzi, Francesco Bisio, Gianluca Gemme, Massimo Granata, Christophe Michel, Laurent Pinard, Maurizio Canepa

Summary: The performance of optical cavities in gravitational wave detectors is affected by the growth of ice layers at cryo temperatures. Spectroscopic ellipsometry was used to study icing on SiO2 and Ti:Ta2O5 thin films, and it was found that SE is a convenient tool for monitoring ice formation. This study also allowed the determination of low-temperature optical properties of Ti:Ta2O5. Rating: 8/10.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2023)

Article Microscopy

Versatile procedure for the correction of non-isochromatism in XPEEM spectroscopic imaging

Sebastian Guenther, Tim Kratky, Juergen Kraus, Paul Leidinger, Patrick Zeller, Alessandro Sala, Francesca Genuzio, Matteo Jugovac, Tevfik Onur Mentes, Andrea Locatelli

Summary: Non-isochromatism in X-ray PhotoEmission Electron Microscopy (XPEEM) may lead to unwanted artifacts in large field of view images. This lack of isochromatism can be caused by factors such as energy dispersion of X-rays on the sample or the presence of dispersive elements in the electron optics of the microscope. However, a versatile correction procedure has been developed that can fully remove this effect and produce true mono-chromatic photoelectron images with improved signal-to-noise ratio.

ULTRAMICROSCOPY (2023)

Article Nanoscience & Nanotechnology

Phase formation in hole- and electron-doped rare-earth nickelate single crystals

P. Puphal, V. Sundaramurthy, V. Zimmermann, K. Kuester, U. Starke, M. Isobe, B. Keimer, M. Hepting

Summary: The discovery of superconductivity in hole-doped infinite-layer nickelates has spurred interest in synthesizing novel nickelate phases, mostly examined in thin film samples. In this study, we report the growth of various perovskite and perovskite-derived rare-earth nickelate single-crystals using high-pressure optical floating zone (OFZ) method, and investigate the effects of different types of doping. Our results show phase separations during growth process when a substitution level of 8% is exceeded for hole-doping with Ca and Sr, and similar trends for electron-doping with Ce and Zr. By employing lower doping levels, we are able to grow large crystals in the perovskite phase, which exhibit distinct electronic and magnetic properties compared to undoped parent compounds.

APL MATERIALS (2023)

Article Materials Science, Multidisciplinary

Energy Storage System Based on Recycled Polypropylene and Its Use in Lithium-Sulfur and Lithium-Ion Batteries

Qian Du, Alina Fox, Leonie Reinders, Kathrin Kuster, Tolga Acarturk, Ulrich Starke, Michael R. R. Buchmeiser

Summary: Nontoxic, eco-friendly, and high-energy-density sulfurated poly(propylene) (S/PP-waste) is prepared from recycled poly(propylene) waste and used as a cathode material in Li-S batteries. It shows a sulfur loading of up to 50.4 wt % and selectively undergoes a solid phase transition, avoiding the polysulfide shuttle effect. With an ultralong cycle life and a low capacity decay, it is a promising energy storage material for the future.

ACS APPLIED POLYMER MATERIALS (2023)

Article Chemistry, Multidisciplinary

Exploring the degradation of silver nanowire networks under thermal stress by coupling in situ X-ray diffraction and electrical resistance measurements

Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet

Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Recording physiological and pathological cortical activity and exogenous electric fields using graphene microtransistor arrays in vitro

Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives

Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Metal oxide-embedded carbon-based materials for polymer solar cells and X-ray detectors

Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani

Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Peptide-mediated targeted delivery of SOX9 nanoparticles into astrocytes ameliorates ischemic brain injury

Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim

Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Spontaneous unbinding transition of nanoparticles adsorbing onto biomembranes: interplay of electrostatics and crowding

Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu

Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Autonomous nanomanufacturing of lead-free metal halide perovskite nanocrystals using a self-driving fluidic lab

Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani

Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

In situ growth of a redox-active metal-organic framework on electrospun carbon nanofibers as a free-standing electrode for flexible energy storage devices

Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin

Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

A NIR-driven green affording-oxygen microrobot for targeted photodynamic therapy of tumors

Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu

Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Novel hollow MoS2@C@Cu2S heterostructures for high zinc storage performance

Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai

Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Mechanistic elucidation of the catalytic activity of silver nanoclusters: exploring the predominant role of electrostatic surface

Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee

Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Facile green synthesis of wasted hop-based zinc oxide nanozymes as peroxidase-like catalysts for colorimetric analysis

Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He

Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Impact of channel nanostructures of porous carbon particles on their catalytic performance

Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim

Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Fabrication of a tough, long-lasting adhesive hydrogel patch via the synergy of interfacial entanglement and adhesion group densification

Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong

Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Strongly coupled plasmonic metal nanoparticles with reversible pH-responsiveness and highly reproducible SERS in solution

Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He

Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Unlocking the full potential of citric acid-synthesized carbon dots as a supercapacitor electrode material via surface functionalization

Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc

Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.

NANOSCALE (2024)