Results 61 to 70 of about 3,742 (297)

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Resolving the Cu(bdc) Conundrum: Identifying Non‐Porous Packing of Prototypical Coordination‐Network Thin Films Combining Advanced Diffraction Techniques and Computational Modelling

Advanced Functional Materials, EarlyView.
Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade, Mario Fratschko, Robbin Steentjes, Mercedes Linares‐Moreau, Paolo Falcaro, Christof Wöll, Roland Resel, Egbert Zojer   +7 more
wiley   +1 more source

Fabrication and characterization of hollow waveguide distributed bragg reflectors

IEICE Electronics Express, 2004
We present the fabrication and characterization of a novel distributed Bragg reflector consisting of a grating loaded slab hollow waveguide. In this structure, we are able to obtain a high reflectivity even by using thin and short surface gratings because of the large contrast in refractive indices between a grating material and an air-core.
Yasuki Sakurai, Akihiro Matsutani, Fumio Koyama   +2 more
openaire   +2 more sources

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Monolithically integrated distributed Bragg reflector lasers for 1.5 μm operation with band gap shifted grating section

, 2000
The design and operation of long wavelength ridge waveguide distributed Bragg reflector lasers in both InGaAs–InGaAlAs and InGaAs–InGaAsP materials with deeply dry-etched surface gratings are presented. To our knowledge, quantum well intermixing was used
McDougall, S.D., Marsh, J.H., De La Rue, R.M., Hamilton, C.J., Kowalski, O.P., Bryce, A.C., Boyd, A., Allan, B.D., Qiu, B.C., Qian, Y.H., Liu, X.F., Ke, Maolong   +11 more
core   +1 more source

Self-injection-locked thin-film regenerative laser amplifier

iScience
Summary: Organic lasers based on distributed feedback (DFB) microcavities have been extensively investigated. However, the application of these lasers is limited by their low output power and large beam divergence.
Yue Liu, Wenwen Wu, Xinping Zhang
doaj   +1 more source

Electrically induced Bragg Reflectors in InP/InGaAsP waveguides as ultrafast optoelectronic modulators [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
In this paper, with the help of numerical simulations, we show how it is possible to create a Distributed Bragg Reflector by electrically inducing periodical refractive index variations in unperturbed III-V rib-waveguides to design different kind of ...
De Laurentis Martina, Irace Andrea, Breglio Giovanni   +2 more
doaj   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

Computational studies of one and two-dimensional photonic microstructures [PDF]

, 2006
This work is concerned with the study of photonic crystals and other topical photonic microstructures, whose optical properties are investigated by solving the Maxwell equations using appropriate theoretical and computational schemes, which are described.
Beggs, Daryl M., Beggs, Daryl M
core  

Micro-transfer-printed III-V-on-silicon C-band distributed bragg reflector laser [PDF]

, 2019
We demonstrate a micro-transfer-printed III-V-on-silicon distributed Bragg reflector (DBR) laser using pre-processed III-V semiconductor optical amplifiers (SOAs).
Sulakshna Kumari, Kumari, Sulakshna, Gunther Roelkens, Corbett, Brian, Agnieszka Gocalinska, Jing Zhang, Muliuk, Grigorij, Emanuele Pelucchi, Soren Dhoore, Roelkens, Günther, Zhang, Jing, Pelucchi, Emanuele, Dhoore, Sören, Gocalinska, Agnieszka, Brian Corbett, Grigorij Muliuk   +15 more
core   +1 more source