Results 31 to 40 of about 2,197,628 (281)

Control theory for scanning probe microscopy revisited

Beilstein Journal of Nanotechnology, 2014
We derive a theoretical model for studying SPM feedback in the context of control theory. Previous models presented in the literature that apply standard models for proportional-integral-derivative controllers predict a highly unstable feedback ...
Julian Stirling
doaj   +1 more source

Micro-Sized pH Sensors Based on Scanning Electrochemical Probe Microscopy

Micromachines, 2022
Monitoring pH changes at the micro/nano scale is essential to gain a fundamental understanding of surface processes. Detection of local pH changes at the electrode/electrolyte interface can be achieved through the use of micro-/nano-sized pH sensors ...
Muhanad Al-Jeda, Emmanuel Mena-Morcillo, Aicheng Chen   +2 more
doaj   +1 more source

Optically induced forces in scanning probe microscopy

Nanophotonics, 2014
Typical measurements of light in the near-field utilize a photodetector such as a photomultiplier tube or a photodiode, which is placed remotely from the region under test.
Kohlgraf-Owens Dana C., Sukhov Sergey, Greusard Léo, De Wilde Yannick, Dogariu Aristide   +4 more
doaj   +1 more source

Biomedical and biological applications of scanning electron microscopy [PDF]

, 2012
Podeu consultar el llibre complet a: http://hdl.handle.net/2445/32166This article summarizes the basic principles of scanning electron microscopy and the capabilities of the technique with different examples of applications in biomedical and biological ...
Cortadellas i Raméntol, Núria, García, Almudena, Fernández, Eva   +2 more
core   +6 more sources

Pathogenic Escherichia coli change the adhesion between neutrophils and endotheliocytes in the experimental bacteremia model

Microbial Cell
Septicemia caused by gram-negative bacteria is characterized by high death rate due to the endotoxin release. Since the septicemia depends not only on biochemical aspects of interactions in the system bloodstream, the study of mechanical interactions is ...
Svetlana N Pleskova, Nikolay A Bezrukov, Sergey Z Bobyk, Ekaterina N Gorshkova, Dmitri V Novikov   +4 more
doaj   +1 more source

Autonomous scanning probe microscopy investigations over WS2 and Au{111}

npj Computational Materials, 2022
Individual atomic defects in 2D materials impact their macroscopic functionality. Correlating the interplay is challenging, however, intelligent hyperspectral scanning tunneling spectroscopy (STS) mapping provides a feasible solution to this technically ...
John C. Thomas, Antonio Rossi, Darian Smalley, Luca Francaviglia, Zhuohang Yu, Tianyi Zhang, Shalini Kumari, Joshua A. Robinson, Mauricio Terrones, Masahiro Ishigami, Eli Rotenberg, Edward S. Barnard, Archana Raja, Ed Wong, D. Frank Ogletree, Marcus M. Noack, Alexander Weber-Bargioni   +16 more
doaj   +1 more source

Cunning Pathogen Tactics: Neutrophil Movement Influenced by Bacterial Attractants in the Experimental Model

Cellular Microbiology
To explore the peculiarities of neutrophil motility, two models of chemoattraction were created: a horizontal model, where a container with bacterial chemoattractant was attached laterally to the endotheliocyte monolayer, and a vertical model, simulating
Svetlana N. Pleskova, Nikolay А. Bezrukov, Ekaterina N. Gorshkova, Eseniya V. Otstavnova, Dmitry V. Novikov   +4 more
doaj   +1 more source

Quantitative Local Photosynthetic Flux Measurements at Isolated Chloroplasts and Thylakoid Membranes Using Scanning Electrochemical Microscopy (SECM) [PDF]

, 2013
Scanning electrochemical microscopy (SECM) offers a fast and quantitative method to measure local fluxes within photosynthesis. In particular, we have measured the flux of oxygen and ferrocyanide (Fe(CN)64–), from the artificial electron acceptor ...
Robinson, Colin, Colin Robinson, Martin, Sophie, Martin, Sophie G., Kim McKelvey, McKelvey, Kim, Unwin, Patrick R., McKelvey, Kim M. (Kim Martin), Patrick R. Unwin, Sophie Martin   +9 more
core   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

FEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi, João C. Encarnação, Valeria Napolitano, Grzegorz Dubin, Grzegorz Popowicz, Karl Andersson, U. Helena Danielson   +6 more
wiley   +1 more source