Results 111 to 120 of about 981,244 (354)

Charge Transfer States in Donor–Acceptor Bulk‐Heterojunctions as Triplet–Triplet Annihilation Sensitizer for Solid‐State Photon Upconversion

open access: yesAdvanced Materials Interfaces, EarlyView.
A near‐infrared photosensitizer that facilitates efficient solid‐state photon upconversion by recycling triplets formed within a fullerene‐based donor–acceptor bulk‐heterojunction system is demonstrated. Spectroscopic investigations reveal that the energy of photogenerated charge transfer states of triplet character (3CT) is subsequently transferred to
Maciej Klein   +4 more
wiley   +1 more source

Photonic Hybrid Integration: Strategies and Promises of Advanced Additive Manufacturing

open access: yesAdvanced Optical Materials, EarlyView.
Heterogeneous photonic integration combines wafer bonding, transfer printing, and advanced multi‐photon lithography to realize compact, adaptable photonic systems. This review highlights breakthroughs in hybrid materials, metrology, and 4D printing, revealing how the convergence of traditional and emerging fabrication unlocks scalable, high‐performance
Zhitian Shi   +3 more
wiley   +1 more source

Correlation between post⁃stroke depression and post⁃stroke fatigue:a Meta⁃analysis

open access: yesHuli yanjiu, 2020
ObjectiveTo probe into the correlation between post⁃stroke depression(PSD)and post⁃stroke fatigue(PSF)by Meta-analysis.MethodsRelevant studies were retrieved from PubMed,EMbase,Web of Science,the Cochrane Library,WanFang and CNKI databases.Retrieval time
YUE Meng, LEI Mengjie, LIU Wenyan
doaj  

American trade policy towards Sub Saharan Africa –- a meta analysis of AGOA [PDF]

open access: yes
Twelve econometric studies investigating the impact of agoa presented in this paper have reported 174 different estimates. In testing for publication bias and whether there is a genuine empirical impact of agoa we resort to a meta-analysis.
Cooke, Edgar F A
core   +1 more source

Eruption of a plasma blob, associated M-class flare, and large-scale EUV wave observed by SDO

open access: yes, 2013
We present a multiwavelength study of the formation and ejection of a plasma blob and associated EUV waves in AR NOAA 11176, observed by SDO/AIA and STEREO on 25 March 2011. SDO/AIA images clearly show the formation and ejection of a plasma blob from the
Kumar, Pankaj, Manoharan, P. K.
core   +1 more source

Excitonic Landscapes in Monolayer Lateral Heterostructures Revealed by Unsupervised Machine Learning

open access: yesAdvanced Optical Materials, EarlyView.
Hyperspectral photoluminescence data from graded MoxW1 − xS2 alloys and monolayer MoS2–WS2 lateral heterostructures are analyzed using unsupervised machine learning. The combined use of PCA, t‐SNE, and DBSCAN uncovers distinct excitonic regions that trace how composition, strain, and defects modulate optical responses in these 2D materials.
Maninder Kaur   +4 more
wiley   +1 more source

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

open access: yesAdvanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida   +3 more
wiley   +1 more source

Technological Frontiers in Brain Cancer: A Systematic Review and Meta-Analysis of Hyperspectral Imaging in Computer-Aided Diagnosis Systems

open access: yesDiagnostics
Brain cancer is a substantial factor in the mortality associated with cancer, presenting difficulties in the timely identification of the disease. The precision of diagnoses is significantly dependent on the proficiency of radiologists and neurologists ...
Joseph-Hang Leung   +5 more
doaj   +1 more source

The E/e' ratio difference between subjects with type 2 diabetes and controls. A meta-analysis of clinical studies.

open access: yesPLoS ONE, 2018
Type 2 diabetes is associated with an increased risk of heart failure. Left ventricular diastolic dysfunction and type 2 diabetes are frequently associated. Using echocardiography, we know that tissue Doppler imaging E/e' ratio is a reliable predictor of
Giacomo Zoppini   +6 more
doaj   +1 more source

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

open access: yesAdvanced Science, EarlyView.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy