Results 81 to 90 of about 591,551 (376)

3D In Vitro Models of Breast Cancer: Current Challenges and Future Prospects Toward Recapitulating the Microenvironment and Mimicking Key Processes

open access: yesAdvanced Biology, EarlyView.
In vitro cancer models are advantageous for studying important processes such as tumorigenesis, cancer growth, invasion, and metastasis. The complexity and biological relevance increase depending on the model structure, organization, and composition of materials and cells.
Kyndra S. Higgins   +2 more
wiley   +1 more source

Synthesis and Characterization of Methylammonium Lead Bromide Perovskite Based Photovoltaic Device

open access: yesEast European Journal of Physics, 2021
Hybrid electronic devices give a reasonable path for feasible power sources and other further applications due to its easy arrangement, preparation, producing, ease of materials, and less environmental impact.
Shaily Choudhary   +4 more
doaj   +1 more source

Conditioning a current source using OCCII-GIC for EIT systems [PDF]

open access: yes, 2015
Multi-Frequency EIT has been developed to evaluate the permittivity spectrum of a medium using an improved Howland source. Stray capacitance reduces the output impedance, bandwidth of the data collection leading to erroneous measurements. To address this,
Falkenberg, Christian   +5 more
core   +1 more source

Infrared Neural Stimulation Elicits Distinct Molecular Pathways in Astrocytes Based on Laser Pulse Parameters

open access: yesAdvanced Biology, EarlyView.
Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams   +7 more
wiley   +1 more source

Recent Progress in Mechanically Robust and Conductive‐Hydrogel‐Based Sensors

open access: yesAdvanced Intelligent Systems, 2023
Flexible electronic technology has developed rapidly in recent years, showing broad application prospects in motion monitoring, wearable devices, and personalized medicine.
Ziwen Fan, Donghwan Ji, Jaeyun Kim
doaj   +1 more source

Statistics of the Charging Spectrum of a Two-Dimensional Coulomb Glass Island

open access: yes, 1997
The fluctuations of capacitance of a two-dimensional island are studied in the regime of low electron concentration and strong disorder, when electrons can be considered classical particles.
%P. L. McEuen   +9 more
core   +1 more source

Titania/alumina bilayer gate insulators for InGaAs metal-oxide-semiconductor devices [PDF]

open access: yes, 2011
We describe the electrical properties of atomic layer deposited TiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> bilayer gate oxides which simultaneously achieve high gate capacitance density and low gate leakage current ...
Ahn, J.   +6 more
core   +1 more source

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

open access: yesAdvanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee   +3 more
wiley   +1 more source

Electrochemiluminescence-based Capacitance Microscopy for Label-free Imaging of Antigens on the Cellular Plasma Membrane.

open access: yesJournal of the American Chemical Society, 2019
Electrochemiluminescence (ECL)-based capacitance microscopy using a square-wave voltage is established unprecedentedly to realize label-free visualization of species on electrode surfaces and cellular plasma membranes.
Jingjing Zhang   +3 more
semanticscholar   +1 more source

Phase Stability Study of the Marcasite‐Structure Solid Solutions (Fe,TM)Sb2 (TM = Cr, Ni) Synthesized via Combinatorial Co‐Deposition and Antimonization

open access: yesAdvanced Engineering Materials, EarlyView.
Phase diagrams of transition‐metal di‐pnictides have been efficiently and quickly explored by combinatorial deposition of transition‐metal films and subsequent antimonization enabling the study of compounds with volatile elements. In (Fe,Ni)Sb2 and the (Fe,Cr)Sb2 substitution series, phase separation has been evidenced between class‐A and B marcasites ...
Martin Kostka   +8 more
wiley   +1 more source

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