Results 101 to 110 of about 45,867 (289)

Ultra-compact silicon nitride grating coupler for microscopy systems [PDF]

, 2017
Grating couplers have been widely used for coupling light between photonic chips and optical fibers. For various quantum-optics and bio-optics experiments, on the other hand, there is a need to achieve good light coupling between photonic chips and ...
Brainis, Edouard, Jiao, Yuqing, Li, Yanlu, Tian, Bin, Van Thourhout, Dries, Wang, Jie, Xie, Weiqiang, Zhu, Yunpeng   +7 more
core   +2 more sources

Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution

Advanced Materials, EarlyView.
Spectral tuning of highly directional hyperbolic shear polaritons is realized via isotopic substitution of 16O to 18O in monoclinic β$\beta$‐phase gallium oxide. A red‐shift of almost 40 cm−1 is experimentally demonstrated with near‐field imaging, corroborated by the permittivity change extracted from far‐field experiments and density functional theory.
Giulia Carini, Mohit Pradhan, Elena Gelžinytė, Andrea Ardenghi, Saurabh Dixit, Maximilian Obst, Aditha S. Senarath, Niclas S. Mueller, Gonzalo Álvarez‐Pérez, Katja Diaz‐Granados, Ryan A. Kowalski, Richarda Niemann, Felix G. Kaps, Jakob Wetzel, Raghunandan Balasubramanyam Iyer, Piero Mazzolini, Mathias Schubert, J. Michael Klopf, Johannes T. Margraf, Oliver Bierwagen, Martin Wolf, Karsten Reuter, Lukas M. Eng, Susanne C. Kehr, Joshua D. Caldwell, Christian Carbogno, Thomas G. Folland, Markus R. Wagner, Alexander Paarmann   +28 more
wiley   +1 more source

A SUBSTRATE INTEGRATED WAVEGUIDE TO SUBSTRATE INTEGRATED COAXIAL LINE TRANSITION

Progress In Electromagnetics Research C, 2013
In this paper, a novel substrate integrated waveguide (SIW) to substrate integrated coaxial line (SICL) transition using the 3dB SIW power divider (PD) and SIW 180 - phase shifter (PS) is proposed. The SIW-to-SICL transition realizes the easy integration of SIW, SICL, and active device in the same microwave communication system based on the substrate ...
Qiang Liu, Yuanan Liu, Yongle Wu, Jun-Yu Shen, Shulan Li, Cuiping Yu, Ming Su   +6 more
openaire   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

Efficient Study Of Substrate Integrated Waveguide Devices

, 2015
This paper presents a study of SIW circuits (Substrate Integrated Waveguide) with a rigorous and fast original approach based on Iterative process (WCIP). The theoretical suggested study is validated by the simulation of two different examples of SIW circuits. The obtained results are in good agreement with those of measurement and with software HFSS.
Hajri, J., Hrizi, H., Sboui, N., Baudrand, Henri   +3 more
openaire   +2 more sources

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Substrate Integrated Plasmonic Waveguide for Microwave Bandpass Filter Applications

IEEE Access, 2019
In this paper, we numerically and experimentally demonstrate a substrate integrated plasmonic waveguide (SIPW) concept and its application in microwave bandpass filters.
Longfang Ye, Yao Chen, Kai Da Xu, Weiwen Li, Qing Huo Liu, Yong Zhang   +5 more
doaj   +1 more source

Low-loss silicon nitride waveguide hybridly integrated with colloidal quantum dots [PDF]

, 2015
International ...
Aubert, Tangi, Hens, Zeger, Van Thourhout, Dries, Verstuyft, Steven, Xie, Weiqiang, Zhu, Yunpeng   +5 more
core   +2 more sources

Two‐Photon 3D Printing of Functional Microstructures Inside Living Cells

Advanced Materials, EarlyView.
This study demonstrates 3D printing inside living cells by using two‐photon photo‐lithography. A bio‐compatible photoresist is injected into cells and selectively polymerized with a femtosecond laser, creating custom‐shaped intracellular structures with submicron resolution.
Maruša Mur, Aljaž Kavčič, Uroš Jagodič, Rok Podlipec, Matjaž Humar   +4 more
wiley   +1 more source

Characterization of femtosecond laser written waveguides for integrated biochemical sensing [PDF]

, 2007
Fluorescence detection is known to be one of the most sensitive among the different optical sensing techniques. This work focuses on excitation and detection of fluorescence emitted by DNA strands labeled with fluorescent dye molecules that can be ...
Cerullo, G., Dekker, R., Dongre, C., Hoekstra, H.J.W.M., Laporta, P., Martinez-Vazquez, R., Nolli, D., Osellame, R., Pollnau, M.   +8 more
core   +1 more source