Results 91 to 100 of about 39,936 (332)

An Ultrabroadband THz Absorber Based on Structured Doped Silicon With Antireflection Techniques

open access: yesIEEE Photonics Journal, 2018
Broadband absorber in the terahertz region (0.1–10 THz) has attracted considerable attentions due to its important applications in detecting, imaging, and electromagnetic stealth.
Jing Yuan   +6 more
doaj   +1 more source

Towards Low Cost Coupling Structures for Short-Distance Optical Interconnections [PDF]

open access: yes, 2007
The performance of short distance optical interconnections in general relies very strongly on coupling structures, since they will determine the overall efficiency of the system to a large extent.
Alajoki, T.   +8 more
core   +3 more sources

A high-speed tunable beam splitter for feed-forward photonic quantum information processing

open access: yes, 2012
We realize quantum gates for path qubits with a high-speed, polarization-independent and tunable beam splitter. Two electro-optical modulators act in a Mach-Zehnder interferometer as high-speed phase shifters and rapidly tune its splitting ratio. We test
Angie Qarry   +35 more
core   +1 more source

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro   +4 more
wiley   +1 more source

Research Progress of Passively Mode-Locked Fiber Lasers Based on Saturable Absorbers

open access: yesNanomaterials
Ultrashort fiber lasers are one of the current research hotspots in the field of lasers. They have the advantages of compact structure and high beam quality.
Jiayi Xie   +4 more
doaj   +1 more source

Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures

open access: yesAdvanced Functional Materials, EarlyView.
3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina   +11 more
wiley   +1 more source

A photonic crystal cavity-optical fiber tip nanoparticle sensor for biomedical applications

open access: yes, 2012
We present a sensor capable of detecting solution-based nanoparticles using an optical fiber tip functionalized with a photonic crystal cavity. When sensor tips are retracted from a nanoparticle solution after being submerged, we find that a combination ...
Cheng, Kai   +10 more
core   +1 more source

Coupling of ultrathin tapered fibers with high-Q microsphere resonators at cryogenic temperatures and observation of phase-shift transition from undercoupling to overcoupling [PDF]

open access: yes, 2012
We cooled ultrathin tapered fibers to cryogenic temperatures and controllably coupled them with high-Q microsphere resonators at a wavelength close to the optical transition of diamond nitrogen vacancy centers.
Fujiwara, Masazumi   +5 more
core   +2 more sources

Planar micro-optic solar concentrator

open access: yesOptics Express, 2010
We present a new approach to solar concentration where sunlight collected by each lens in a two-dimensional lens array is coupled into a shared, planar waveguide using localized features placed at each lens focus. This geometry yields a thin, flat profile for moderate concentration systems which may be fabricated by low-cost roll manufacture.
Jason H, Karp   +2 more
openaire   +2 more sources

Composition and Resulting Band Alignment at the TiO2/InP Heterointerface: A Fundamental Study Combining Photoemission Spectroscopy and Theory

open access: yesAdvanced Functional Materials, EarlyView.
The chemical composition and band alignment are systematically investigated at the TiO2/InP heterointerface. Thin TiO2 films are deposited by ALD on atomically ordered, P‐terminated p‐InP(100). By combining UPS, XPS, and ab initio molecular dynamics, the atomistic structure and electronic alignment are revealed.
Mohammad Amin Zare Pour   +11 more
wiley   +1 more source

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