Risultati di ricerca

< Back R. Cecchini, S. Selmo, C. Wiemer, E. Rotunno, L. Lazzarini, M. De Luca, I. Zardo, and M. Longo Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

< Back J. Martín-Sánchez, A. Mariscal, M. De Luca, A. Tarazaga, M.-Luengo, G. Gramse, A. Halilovic, R. Serna, A. Bonanni, I. Zardo, R. Trotta, and A. Rastelli Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

Ancora 1 News & Events The latest about what's happening in our lab! 29 Congratulations to Isabella for her master degree in Physics on GaAsP NWs and GaP/GaAs SL! January 2026 We wish her all the best for the future! 28 SNSPDs Arrival January 2026 A late Christmas gift from the Netherlands 27 Vietnamese Christmas Lunch December 2025 26 ACS Nano 2025 19, 45 - COVER PAGE PUBLISHED! November 2025 Published paper and cover page designed with Akant's contribution: https://www.phys.uniroma1.it/it/quantum-light-nanowire-tubes-new-path-toward-silicon-photonics 25 The group attends Nanowire Week 2025 in Cambridge August 2025 24 We inaugurate the new table with the now traditional pizza lunch June 2025 May it bring luck to our experiments. 23 The lab gets a second optical table. March 2025 Twice the space, double the experiments. 22 The group attends the NQSTI 2nd National Congress, CNR Roma February 2025 Here: round-table event on quantum technologies, italian industries and PNRR. 21 Welcome to the new Post-Doc researcher: Hari February 2025 A sweet welcome to start off the right foot. 20 Congratulations to Mario for his master degree in Physics on GaAsP QD NWs! January 2025 We wish him all the best for his future. 19 Marta presenting at ISSON 2024, Canberra December 2024 18 Professor C. Jagadish, from Australian National Univerisity, visits the Lab November 2024 The Professor gave a very inspirational talk about talk about nanowire applications in various fields. Load More...

Our Goals Nanostructures, such as 2D materials or nanowires, have revolutionized the field of semiconductors, making it possible, among others, to transform indirect bandgap materials to direct bandgap materials, or making it possible for a crystal to grow in a crystal structure that does not exist in bulk. We work in close collaboration with several growth laboratories providing nanostructures, and we functionalize them by several methods, such as hydrogen or helium irradiation, laser heating, thermal annealing, nanoscale patterning etc. to achieve the desired properties. Working at the boundaries between fundamental physics and technological applications, our goal is to achieve new functionalities or explore new physical effects. Advances in Optics and Photonics 13 (2021): 242. However, in the Nano-spectroscopy group we are not happy to work just with nanostructures: we create nanostructures inside the nanostructures. In our vision the nanostructures are scaffolds embedding smaller quantum structures (quantum dots, point defects that emit single photons, quantum rings, quantum wells, etc.) with diverse dimensionalities (0D, 1D, and 2D). For example, in nanowire lasers, by embedding quantum confined structures as active gain media it is possible to enhance the gain and lower lasing threshold. Moreover, by embedding quantum dots in nanowires for quantum photonic applications based on single photon emitters, it can be possible to obtain a higher photon extraction than in standard self-assembled dots embedded in a 3D matrix, owing to the possibility to design the nanowire to act as a waveguide with a photon out-coupler. This makes quantum dots in nanowires the ideal building block of quantum photonic circuits. Furthermore, by embedding quantum rings in quantum wells, one can unveil the topological phase of charge carriers, by controlling the appearance of magnetic states expected due to the circular symmetry of the carrier wavefunction (Aharonov-Bohm effect). Explore our Projects Physics Today 1 September 2009; 62 (9): 38–43

< Back O. Arif, V. Zannier, F. Rossi, D. De Matteis, K. Kress, M. De Luca, I. Zardo, L. Sorba Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

Publication List Articles Published or under revision in Peer-Reviewed Journals < Back 1. Nadine Denis, Akant Sagar Sharma, Elena Blundo, Francesca Santangeli, Paolo De Vincenzi, Riccardo Pallucchi, Mitsuki Yukimune, Alexander Vogel, Ilaria Zardo, Antonio Polimeni, Fumitaro Ishikawa, Marta De Luca, "Bandgap Engineering On Demand in GaAsN Nanowires by Post-Growth Hydrogen Implantation", Small (2025) https://doi.org/10.1002/smll.202506091 Poster : “Nitrogen-induced strain in highly mismatched III-V heterostructured nanowires: a Raman spectroscopy investigation” Conference: Nanowire Week 2025 Date, where: 25 – 29/08/2025, St John’s College, University of Cambridge, Cambridge, UK Authors: Riccardo Pallucchi (presenter), Akant Sagar Sharma, Nadine Denis, Paolo De Vincenzi, Francesca Santangeli, Ilaria Zardo, Fumitaro Ishikawa, Riccardo Rurali and Marta De Luca. Poster : “Localized annealing: a step toward post-growth, site-controlled quantum dots in III-V semiconductor nanowires” Conference: PLASMONICA – International School of Plasmonics and Nano-optics at Lake Como School of Advanced Studies Date, where: 03-07/06/2024, Como Authors: Riccardo Pallucchi (presenter), Akant Sagar Sharma, Paolo De Vincenzi, Nadine Denis, Francesca Santangeli, Antonio Polimeni, Fumitaro Ishikawa, Riccardo Rurali, Marta De Luca Subject: toward post-growth, site-controlled QDs in semiconductor nanowires through laser and SNOM localized annealing on III/V nanowires (NWs). Preliminary Raman and PL spectroscopies results on bandgap tuning by hydrogenation and annealing, and investigation of the vibrational properties of mismatched, strained heterostructures. Oral contribution: “Real-time light transmission spectroscopy: quantitative time-resolved investigation of colloidal aggregation dynamics” Conference: ECIS2023 – 37th Conference of the European Colloid & Interface Society (https://www.ecis2023.eu/) Date, where: 03-08/09/2023, Napoli Authors: Angela Capocefalo, Riccardo Pallucchi, Greta Peruzzi, Federico Bordi, Paolo Postorino, Barbara Ruzicka, Claudia Fasolato (presenter) Subject: Time-resolved optical transmission spectroscopy for the study of colloidal systems subjected to external stimuli. Results of the investigation on the aggregation stimulated by acidity variations in plasmonic and polymeric colloidal systems functionalized with different ligands. Poster: “Surface Enhanced Raman Scattering studies on biocompatible pH responsive nanosystems” Conference: ECIS2023 – 37th Conference of the European Colloid & Interface Society (https://www.ecis2023.eu/) Date, where: 03-08/09/2023, Napoli Authors: Greta Peruzzi, Sara Cerra, Angela Capocefalo, Riccardo Pallucchi, Francesco Cappelluti, Ilaria Fratoddi, Claudia Fasolato (presenter) Subject: Functionalization of silver nanoparticles with two different pH-responsive thiols, stable under physiological conditions; characterization of the surrounding molecular layer at different acidity levels by surface-amplified Raman spectroscopy. Poster: “Quantitative aggregation dynamics of responsive plasmonic colloids by real-time light transmission spectroscopy” Conference: Plasmonica – 9th edition of the Workshop on Plasmonics and Nano-optics (https://www.plasmonica.it/2023) Date, where: 05-07/07/2023, Milano Authors: Angela Capocefalo, Riccardo Pallucchi (presenter), Greta Peruzzi, Federico Bordi, Paolo Postorino, Barbara Ruzicka, Claudia Fasolato Subject: study of the aggregation and diffusion dynamics of plasmonic colloidal systems subjected to external stimuli through real-time measurements of optical transmission spectroscopy. Results of quantitative measurements of optical extinction on a colloidal system of gold plasmonic nanoparticles with different ligands to investigate their aggregation stimulated by variations in acidity. Oral contribution on invitation: “Real-time light transmission spectroscopy: quantitative investigation of colloids and aerosols for environmental applications” Conference: DEUPAS “Ultrasensitive monitoring of VOCs and pathogens by spectroscopy – Innovative solutions and sensor systems for air-quality monitoring” Date, where: 04-05/07/2023, Frascati Authors: Claudia Fasolato (presenter), Angela Capocefalo, Riccardo Pallucchi, Greta Peruzzi, Federico Bordi, Barbara Ruzicka, Paolo Postorino Subject: optical extinction measurements for real-time characterization of particulate matter produced by combustion in diesel engines. Presentation of an original setup for time-resolved extinction measurements and preliminary results performed on colloidal systems for the study of the aggregation dynamics induced by pH variations. Discussion of the potential and limitations of the setup in the context of air quality monitoring. Poster: “All-optical investigation of biocompatible plasmonic colloids: surface chemistry, colloidal stability and pH responsivity” Conference: VISPEC2023 – International Summer School on Vibrational Spectroscopy – School and Conference (https://vispec2023.weebly.com/) Date, where: 12-16/06/2023, Perugia Authors: Greta Peruzzi (presenter), Sara Cerra, Angela Capocefalo, Riccardo Pallucchi, Francesco Cappelluti, Ilaria Fratoddi, Barbara Ruzicka, Claudia Fasolato Subject: synthesis of silver nanoparticles with two hydrophilic thiols characterized by amino and sulfhydryl groups, and subsequent study of the surrounding molecular layer under varying pH conditions by means of surface-amplified Raman spectroscopy. Poster: “Real-time light transmission spectroscopy: quantitative investigation of colloidal aggregation dynamics” Conference: Interchall2023 – Interdisciplinary challenges: from non-equilibrium physics to life science (https://www.interchall2023.com ) Date, where: 17-21/04/2023, Roma Authors: Riccardo Pallucchi (presenter), Angela Capocefalo, Greta Peruzzi, Paolo Postorino, Barbara Ruzicka, Claudia Fasolato Subject: Development of a time-resolved optical transmission spectroscopy instrument designed to investigate the evolution of colloidal systems subjected to external stimuli through quantitative scattering measurements. Presentation of the results related to the aggregation of plasmonic gold nanoparticles with different functionalizations in response to pH variations.

Projects Single photon emitters in GaAsN nanowire tubes Bandgap engineering and strain engineering by hydrogenation in dilute nitrides nanowires Defect engineering and bandgap control in InN nanowires Tunable quantum dots in GaAsP and InAsP nanowires Micro-ring resonator lasers by self-assembly in InP Size-controlled and site-controlled quantum rings in quantum wells Unveiling new crystalline defects in InP nanowires Spectroscopic investigations on Hybrid 2D Perovskites

< Back D. Vakulov, S. Gireesan, M. Y. Swinkels, R. Chavez, T. J. Vogelaar, P. Torres, A. Campo, M. De Luca, M. A. Verheijen, S. Koelling, L. Gagliano, J. E. M. Haverkort, F. X. Alvarez, P. A. Bobbert, I. Zardo, and E. P.A.M. Bakkers Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

< Back D. Tedeschi, M. De Luca, P. E. Faria Junior, A. Granados del Águila, Q. Gao, H. H. Tan, B. Scharf, P. C. M. Christianen, C. Jagadish, J. Fabian and A. Polimeni Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

< Back A. Zilli, M. De Luca, D. Tedeschi, A. Fonseka, A. Miriametro, H. Tan, C. Jagadish, M. Capizzi, and A. Polimeni Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

< Back M. De Luca*, X. Cartoixà, J. Martín-Sánchez, M. López-Suárez, R. Trotta, R. Rurali, and I. Zardo* Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now

< Back M. Felici, A. Polimeni, E. Tartaglini, A. Notargiacomo, M. De Luca, R. Carron, D. Fekete, B. Dwir, A. Rudra, M. Capizzi, and E. Kapon Apply Now Job Type Workspace About the Role Requirements About the Company Apply Now