Results 41 to 50 of about 3,540 (206)

Compact system design based on digital in-line holographic microscopy configuration [PDF]

Journal of the European Optical Society-Rapid Publications, 2012
We present our study regarding a compact system design for cell counting and simultaneous 3D imaging, based on digital in-line holographic microscopy configuration.
Mihailescu M., Kusko M.
doaj   +1 more source

Deep‐UV Photonic Crystal Surface‐Emitting Lasers

Laser &Photonics Reviews, EarlyView.
The first deep‐UV photonic crystal surface‐emitting lasers (PCSELs) at 279 nm are demonstrated under pulsed optical pumping. The PCSELs have single‐mode emission with a 17‐pm linewidth and a divergence angle of less than 1∘$^{\circ }$. Experimental results highlight the impact of the filling factor choice on the lasing mode and the far‐field emission ...
Doğukan Apaydın, Hjalmar Andersson, Lukas Uhlig, Sarina Graupeter, Joachim Ciers, Giulia Cardinali, Erik Strandberg, Tim Wernicke, Michael Kneissl, Ulrich Theodor Schwarz, Philippe Tassin, Åsa Haglund   +11 more
wiley   +1 more source

Micro-optical Components for Bioimaging on Tissues, Cells and Subcellular Structures

Micromachines, 2019
Bioimaging generally indicates imaging techniques that acquire biological information from living forms. Among different imaging techniques, optical microscopy plays a predominant role in observing tissues, cells and biomolecules.
Hui Yang, Yi Zhang, Sihui Chen, Rui Hao
doaj   +1 more source

Spatiotemporal Encoding With Nonlinear Gradient Hardware Using Pulseq: From Principles to Practical Demonstration

Magnetic Resonance in Medicine, EarlyView.
Purpose Provide the theoretical foundation and the first practical demonstration of spatiotemporal encoding (SPEN) using additional nonlinear gradient hardware. Methods The quadratic phase profile can be generated either by a chirped‐RF pulse combined with a constant gradient or, directly, by a quadratic gradient pulse.
Andreas Holl, Frank Zijlstra, Maxim Zaitsev, Jakob Hufschmidt, Shadi Tashakori, Nils Schallner, Thomas Stieglitz, Jens Gröbner, Sebastian Littin   +8 more
wiley   +1 more source

Universal control of a bosonic mode via drive-activated native cubic interactions

Nature Communications
Linear bosonic modes offer a hardware-efficient alternative for quantum information processing but require access to some nonlinearity for universal control.
Axel M. Eriksson, Théo Sépulcre, Mikael Kervinen, Timo Hillmann, Marina Kudra, Simon Dupouy, Yong Lu, Maryam Khanahmadi, Jiaying Yang, Claudia Castillo-Moreno, Per Delsing, Simone Gasparinetti   +11 more
doaj   +1 more source

Micro‐transitions and work identity: The case of academic entrepreneurs

Strategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary This paper examines how academic entrepreneurs—scientists who found research‐based startups while remaining in academia—construct and sustain their professional identities amid frequent transitions between academic and entrepreneurial roles.
Marouane Bousfiha, Henrik Berglund
wiley   +1 more source

Suspendable and Scalable Ultrasound‐Actuated ZnO‐Nanosheet‐Based Piezoelectric Microdevices for Wireless Electrical Stimulation of Cells

Small, EarlyView.
Silicon microtechnology enables the scalable fabrication of cytocompatible microdevices for wireless electrical stimulation. Microdevices smaller than a cell allow accurate interaction with single cells. By integrating piezoelectric nanostructures that can be actuated by ultrasound within the biomedical range, remote electrical cell stimulation is ...
Laura Lefaix, Marc Navarro, Lucie Bacakova, Jaume Esteve, Carme Nogués, Andreu Blanquer, Gonzalo Murillo   +6 more
wiley   +1 more source

Analysing Physical Performance Indicators Measured with Electronic Performance Tracking Systems in Men’s Beach Volleyball Formative Stages

Sensors
Sports performance initiation is of significant interest in sports sciences, particularly in beach volleyball (BV), where players usually combine indoor and BV disciplines in the formative stages.
Joaquín Martín Marzano-Felisatti, Rafael Martínez-Gallego, José Pino-Ortega, Antonio García-de-Alcaraz, Jose Ignacio Priego-Quesada, José Francisco Guzmán Luján   +5 more
doaj   +1 more source

Microlenses with annular amplitude and phase masks [PDF]

Journal of the European Optical Society-Rapid Publications, 2007
We present theoretical and experimental investigations of microlenses with both amplitude and phase masks. The light field in the focal region has been measured with a high resolution Mach–Zehnder interferometer with z–scan. The experimental results show
Paeder V., Scharf T., Ruffieux P., Herzig H.–P., Voelkel R., Weible K. J.   +5 more
doaj   +1 more source

Liquid‐Processed 2D Aromatic Amorphous Carbon: Defect Engineering and Universal Transport Scaling

Small, EarlyView.
Liquid‐processed graphene oxide (GO) thin films undergo a controllable crystalline–to–amorphous transition driven by thermal quenching. By kinetically tuning oxygen‐driven defect formation during reduction, scalable 2D aromatic amorphous carbon phases are stabilized, directly linking nanoscale disorder and defect topology to electronic transport ...
Fabiola Liscio, Andrea Fondacaro, Gaetana Petrone, Federico Chianese, Jasper Rikkert Plaisier, Sara Fiori, Orlando Castellano, Alice Apponi, Nicolò Galvani, Verónica Montes García, Veronica Valentini, Stefano Iacobucci, Damiano Ricciarelli, Giuseppe Fisicaro, Antonino Lamagna, Giovanni Maria Vinai, Ernesto Placidi, Alessandro Bellucci, Daniele Maria Trucchi, Paolo Samorì, Alessandro Ruocco, Samuel Lara Avila, Andrea Liscio   +22 more
wiley   +1 more source