Results 61 to 70 of about 43,172 (307)

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

open access: yesAdvanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo   +7 more
wiley   +1 more source

A Widely Tunable Compact Bandpass Filter Based on a Switched Varactor-Tuned Resonator

open access: yesIEEE Access, 2019
This paper presents a compact tunable bandpass filter (BPF) based on a switched varactor tuned resonator with a wide frequency-tuning range and a constant absolute bandwidth (ABW).
Minjae Jung, Byung-Wook Min
doaj   +1 more source

A tunable narrow band optical filter.

open access: yesThe Astronomical Journal, 1947
Polarization interference filters are described which can have a pass band ranging from a fraction of an angstrom to several hundred angstroms in width. The pass band can be shifted to any desired region of the spectrum. These tunable filters are based on the fixed filters discussed by Lyot and Evans.
openaire   +3 more sources

Spin Injection Of Exciton–Polaritons With Halide Perovskites At Room Temperature

open access: yesAdvanced Functional Materials, EarlyView.
A monolithic Tamm‐plasmon microcavity embedding a two‐dimensional halide perovskite enables room‐temperature spin injection of exciton‐polaritons under quasi‐resonant optical excitation. Polarization‐resolved spectroscopy reveals partial preservation of the injected spin in the lower polariton branch, while bare excitons remain fully depolarized.
Elena Sendarrubias Arias‐Camisón   +8 more
wiley   +1 more source

Highly linear tunable CMOS Gm-C low-pass filter [PDF]

open access: yes, 2009
A comprehensive analysis of tunable transconductor topologies based on passive resistors is presented. Based on this analysis, a new CMOS transconductor is designed, which features high linearity, simplicity, and robustness against geometric and ...
JOSE MARIANO JIMENEZ FUENTES   +1 more
core  

A tunable SIW integrated filter/antenna [PDF]

open access: yes, 2017
A tunable 3-D filter/antenna integration implementation is presented herein. The tunable integrated device consists of a tunable coaxial substrate integrated waveguide (SIW) resonator coupled to a tunable cavity-backed slot antenna.
Ricardo Lovato   +3 more
core   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

Wavelength tunable transmitters for future reconfigurable agile optical networks [PDF]

open access: yes, 2009
Wavelength tuneable transmission is a requirement for future reconfigurable agile optical networks as it enables cost efficient bandwidth distribution and a greater degree of transparency.
Maher, Robert D.
core  

Ultra-wideband bandpass microstrip filter with electronically tunable notch-band

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
This paper introduces a compact ultra-wideband (UWB) microstrip filter featuring both a fixed and an electronically tunable notch band. Operating within the frequency range of 3.27 GHz to 5.61 GHz, the filter incorporates a permanent notch at 4.08 GHz ...
Dattatray S. Bade, Sudhakar S. Mande
doaj   +1 more source

Harmonic suppressed coupled stepped-impedance resonator based dual-band tunable bandpass filter

open access: yesEngineering Science and Technology, an International Journal, 2017
In this paper, a tunable dual-band bandpass filter (BPF) based on a varactor-loaded coupled stepped-impedance resonator is presented. Transmission matrices techniques are employed to explain the working concept of proposed tunable BPF. For validating the
Amarjit Kumar, Nagendra Prasad Pathak
doaj   +1 more source

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