Search Results - "OʼKeeffe, P"

Oscillators that sync and swarm by O’Keeffe, Kevin P., Hong, Hyunsuk, Strogatz, Steven H.

“…Synchronization occurs in many natural and technological systems, from cardiac pacemaker cells to coupled lasers. In the synchronized state, the individual…”
Get full text

Graphene-Induced Improvements of Perovskite Solar Cell Stability: Effects on Hot-Carriers by O’Keeffe, P, Catone, D, Paladini, A, Toschi, F, Turchini, S, Avaldi, L, Martelli, F, Agresti, A, Pescetelli, S, Del Rio Castillo, A. E, Bonaccorso, F, Di Carlo, A

“…Hot-carriers, that is, charge carriers with an effective temperature higher than that of the lattice, may contribute to the high power conversion efficiency…”
Get full text

Ultrafast relaxation of photoexcited superfluid He nanodroplets by Mudrich, M., LaForge, A. C., Ciavardini, A., O’Keeffe, P., Callegari, C., Coreno, M., Demidovich, A., Devetta, M., Fraia, M. Di, Drabbels, M., Finetti, P., Gessner, O., Grazioli, C., Hernando, A., Neumark, D. M., Ovcharenko, Y., Piseri, P., Plekan, O., Prince, K. C., Richter, R., Ziemkiewicz, M. P., Möller, T., Eloranta, J., Pi, M., Barranco, M., Stienkemeier, F.

“…The relaxation of photoexcited nanosystems is a fundamental process of light–matter interaction. Depending on the couplings of the internal degrees of freedom,…”
Get full text

Quantifying the sensing power of vehicle fleets by O’Keeffe, Kevin P., Anjomshoaa, Amin, Strogatz, Steven H., Santi, Paolo, Ratti, Carlo

“…Sensors can measure air quality, traffic congestion, and other aspects of urban environments. The fine-grained diagnostic information they provide could help…”
Get full text

Travel distance, frequency of return, and the spread of disease by Heine, Cate, O’Keeffe, Kevin P., Santi, Paolo, Yan, Li, Ratti, Carlo

“…Human mobility is a key driver of infectious disease spread. Recent literature has uncovered a clear pattern underlying the complexity of human mobility in…”
Get full text

Ultrafast Hydrogen Migration in Photoionized Glycine by Castrovilli, M. C, Trabattoni, A, Bolognesi, P, O’Keeffe, P, Avaldi, L, Nisoli, M, Calegari, F, Cireasa, R

“…Hydrogen migration in the glycine cation has been investigated using a combination of a short train of attosecond extreme ultraviolet pulses with…”
Get full text

Autoionization dynamics of helium nanodroplets resonantly excited by intense XUV laser pulses by Ovcharenko, Y, LaForge, A C, Langbehn, B, Plekan, O, Cucini, R, Finetti, P, O'Keeffe, P, Iablonskyi, D, Nishiyama, T, Ueda, K, Piseri, P, Di Fraia, M, Richter, R, Coreno, M, Callegari, C, Prince, K C, Stienkemeier, F, Möller, T, Mudrich, M

“…The ionization dynamics of helium droplets irradiated by intense, femtosecond extreme ultraviolet (XUV) pulses is investigated in detail by photoelectron…”
Get full text

Plasmon Controlled Shaping of Metal Nanoparticle Aggregates by Femtosecond Laser-Induced Melting by Catone, D, Ciavardini, A, Di Mario, L, Paladini, A, Toschi, F, Cartoni, A, Fratoddi, I, Venditti, I, Alabastri, A, Proietti Zaccaria, R, O’Keeffe, P

“…In this work, we show how to control the morphology of femtosecond laser melted gold nanosphere aggregates. A careful choice of both laser fluence and…”
Get full text

Sync and Swarm: Solvable Model of Nonidentical Swarmalators by Yoon, S., O’Keeffe, K. P., Mendes, J. F. F., Goltsev, A. V.

Get full text

Novel collective autoionization process observed in electron spectra of He clusters by Ovcharenko, Y, Lyamayev, V, Katzy, R, Devetta, M, LaForge, A, O'Keeffe, P, Plekan, O, Finetti, P, Di Fraia, M, Mudrich, M, Krikunova, M, Piseri, P, Coreno, M, Brauer, N B, Mazza, T, Stranges, S, Grazioli, C, Richter, R, Prince, K C, Drabbels, M, Callegari, C, Stienkemeier, F, Möller, T

“…The ionization dynamics of He nanodroplets irradiated with intense femtosecond extreme ultraviolet pulses of up to 1013  W/cm2 power density have been…”
Get full text

Modeling the Interplay Between Seasonal Flu Outcomes and Individual Vaccination Decisions by Papst, Irena, O’Keeffe, Kevin P., Strogatz, Steven H.

“…Seasonal influenza presents an ongoing challenge to public health. The rapid evolution of the flu virus necessitates annual vaccination campaigns, but the…”
Get full text

Sensitivity of nonlinear photoionization to resonance substructure in collective excitation by Mazza, T., Karamatskou, A., Ilchen, M., Bakhtiarzadeh, S., Rafipoor, A. J., O’Keeffe, P., Kelly, T. J., Walsh, N., Costello, J. T., Meyer, M., Santra, R.

“…Collective behaviour is a characteristic feature in many-body systems, important for developments in fields such as magnetism, superconductivity, photonics and…”
Get full text

Enhanced Ionization of Embedded Clusters by Electron-Transfer-Mediated Decay in Helium Nanodroplets by LaForge, A C, Stumpf, V, Gokhberg, K, von Vangerow, J, Stienkemeier, F, Kryzhevoi, N V, O'Keeffe, P, Ciavardini, A, Krishnan, S R, Coreno, M, Prince, K C, Richter, R, Moshammer, R, Pfeifer, T, Cederbaum, L S, Mudrich, M

“…We report the observation of electron-transfer-mediated decay (ETMD) involving magnesium (Mg) clusters embedded in helium (He) nanodroplets. ETMD is initiated…”
Get full text

Anthropogenic, biogenic, and photochemical influences on surface formaldehyde and its significant decadal (2006–2017) decrease in the Lewiston-Clarkston valley of the northwestern United States by Li, R., Jobson, B.T., Wen, M., Li, A.L., Huangfu, Y., Zhang, W., Hardy, R., O'Keeffe, P., Simpson, J., Fauci, M., Paden, N.

“…Formaldehyde (HCHO) is a key carcinogen and plays an important role in atmospheric chemistry. Both field measurements and Positive Matrix Factorization (PMF)…”
Get full text

Evidence that curtailing proactive policing can reduce major crime by Sullivan, Christopher M., O’Keeffe, Zachary P.

“…Governments employ police to prevent criminal acts. But it remains in dispute whether high rates of police stops, criminal summonses and aggressive low-level…”
Get full text

Determining the polarization state of an extreme ultraviolet free-electron laser beam using atomic circular dichroism by Mazza, T., Ilchen, M., Rafipoor, A. J., Callegari, C., Finetti, P., Plekan, O., Prince, K. C., Richter, R., Danailov, M. B., Demidovich, A., De Ninno, G., Grazioli, C., Ivanov, R., Mahne, N., Raimondi, L., Svetina, C., Avaldi, L., Bolognesi, P., Coreno, M., O'Keeffe, P., Di Fraia, M., Devetta, M., Ovcharenko, Y., Möller, Th, Lyamayev, V., Stienkemeier, F., Düsterer, S., Ueda, K., Costello, J. T., Kazansky, A. K., Kabachnik, N. M., Meyer, M.

“…Ultrafast extreme ultraviolet and X-ray free-electron lasers are set to revolutionize many domains such as bio-photonics and materials science, in a manner…”
Get full text

Synchronization as Aggregation: Cluster Kinetics of Pulse-Coupled Oscillators by O'Keeffe, Kevin P, Krapivsky, P L, Strogatz, Steven H

“…We consider models of identical pulse-coupled oscillators with global interactions. Previous work showed that under certain conditions such systems always end…”
Get full text

Pyrimidine and halogenated pyrimidines near edge x-ray absorption fine structure spectra at C and N K-edges: experiment and theory by Bolognesi, P, O'Keeffe, P, Ovcharenko, Y, Coreno, M, Avaldi, L, Feyer, V, Plekan, O, Prince, K C, Zhang, W, Carravetta, V

“…The inner shell excitation of pyrimidine and some halogenated pyrimidines near the C and N K-edges has been investigated experimentally by near edge x-ray…”
Get more information

An experimental and theoretical study of the resonant Auger spectrum of the ethene molecule by Flammini, R, Satta, M, OʼKeeffe, P, Coreno, M, Kivimäki, A, de Simone, M, Carbone, M, Feyer, V, Prince, K C, Avaldi, L

“…Resonant Auger spectra of the ethene molecule excited at energies across the C1s energy band are reported. Our measurements address the unexpected variation of…”
Get full text

Investigation of Halogenated Pyrimidines by X-ray Photoemission Spectroscopy and Theoretical DFT Methods by Bolognesi, P, Mattioli, G, O’Keeffe, P, Feyer, V, Plekan, O, Ovcharenko, Y, Prince, K. C, Coreno, M, Amore Bonapasta, A, Avaldi, L

“…The inner shell ionization of pyrimidine and some halogenated pyrimidines has been investigated experimentally by X-ray photoemission spectroscopy (XPS) and…”
Get full text