Results 101 to 110 of about 2,191,429 (154)

Denoise Stepwise Signals by Diffusion Model‐Based Approach

open access: yesSmall Methods, Volume 10, Issue 18, 23 September 2026.
This work presents SSDM, a diffusion‐model‐based framework for denoising stepwise signals in single‐molecule measurements. By learning the statistical structure of state transitions and noise, SSDM reconstructs signal levels and identifies transition time points more accurately than conventional approaches, enabling robust analysis of signals across ...
Xingdi Tong, Chenyu Wen
wiley   +1 more source

Nonlinear Force‐Extension Response of a Polyelectrolyte Chain Undergoing Mechano–Electrostatic–Conformational Coupling and Metastable Heterogeneity

open access: yesSmall Structures, Volume 7, Issue 9, September 2026.
Mechanical stretching drives a collapsed polyelectrolyte through globular, tadpole‐like, and extended conformations with concurrent charge redistribution. Counterion condensation neutralizes the compact head, whereas release sustains a highly ionized tail.
Zhenjie Xu   +4 more
wiley   +1 more source

Optical bistability and soliton switching in an optical ring cavity

open access: yes, 2004
This thesis presents the theory of the driven optical ring cavity containing a nonlinear material. First, an overview of the history of bistability and spatial solitons in driven nonlinear cavities is outlined.
Oliver, Eric Curtis John
core  

Nonlinearities and Switch‐Like Behavior in Gene Expression: From Genetics to Biochemistry and Back

open access: yesThe FASEB Journal, Volume 40, Issue 16, 31 August 2026.
Modest changes in transcription‐factor or chromatin‐regulator dosage can have disproportionate effects when gene‐regulatory systems operate near nonlinear thresholds. Sigmoidal input–output relationships, chromatin and cofactor recruitment, and changes in threshold position or response steepness provide molecular routes by which quantitative dosage ...
Reiner A. Veitia, James A. Birchler
wiley   +1 more source

OPTICAL BISTABILITY IN A GAAS/GAALAS MULTI-QUANTUM-WELL (MQW) SELF-ELECTROOPTIC EFFECT DEVICE (SEED)

open access: yes, 1991
Based on a GaAs/GaAlAs MQW pin structure grown by a home-made MBE system, we have successfully fabricated a SEED. The optical bistability and related properties of the device under symmetric operation (S-SEED) and asymmetric operation are ...
KONG MY   +7 more
core  

Optical bistability by 2-wave mixing in photorefractive crystals

open access: yes, 2017
Thesis (M. S.)--University of Rochester. College of Engineering and Applied Science. Institute of Optics, 1991.Optical bistability in photorefractive Ce:SBN is studied.
Boyd, Robert W. (1948 - )   +1 more
core  
Some of the next articles are maybe not open access.

Optical bistability

Optics and Photonics News, 1990
B. S. Wherrett, D. C. Hutchings
  +5 more sources

Optical bistability in BDN dye

IEEE Journal of Quantum Electronics, 1983
We report optical bistability in a Fabry-Perot filled with BDN saturable absorbing dye occurring due to an intensity-dependent phase shift. A four-level model is used to show that the phase shift arises from nonresonant dispersion due to an excited metastable state which is excited in the process of saturable absorption. Preliminary experiments confirm
Zhen-Fu Zhu, Elsa Garmire
openaire   +1 more source

Optical bistability with surface plasmons

Optics Letters, 1981
We theoretically examine bistable operation in reflection with simultaneous excitation of the surface-plasmon mode at the interface with a nonlinear Kerr medium. Bistability may occur for an incident power an order of magnitude below that reported previously for a grazing-incidence geometry.
G M, Wysin, H J, Simon, R T, Deck
openaire   +2 more sources

Multimode instability in optical bistability

Physical Review A, 1989
We compare theoretical predictions and experimental data for the multimode instability of optical bistability, which arises from the coherent dynamics of a system of two-level molecules contained in an optical cavity and driven by an external stationary laser field. Considerable insight into this phenomenon is provided by two rules of thumb that govern
Ségard, B.   +4 more
openaire   +4 more sources

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