Results 121 to 130 of about 197,872 (309)

Non-contact friction studied with pendulum AFM [PDF]

, 2014
Understanding nanoscale friction and dissipation is central to nanotechnology. The recent detection of the electronic friction drop caused by the onset of superconductivity in Nb by means of an ultrasensitive non-contact pendulum atomic force microscope (
Samadashvili, Markus
core   +1 more source

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

Advanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett, Shahad K. Alsaiari, John L. Daristotle, Timothy A. Forster, Alicia Lau, Dhruv Varshney, Rania Afaneh, Andrew R. Hanna, Charles Sloane, David Mankus, Haitao Yu, Jiali Zhai, DongSoo Yun, Lisa H. Tostanoski, Abigail Lytton‐Jean, Dan H. Barouch, Charlotte E. Conn, Robert Langer, Ana Jaklenec, Calum J. Drummond   +19 more
wiley   +1 more source

Scanning Probes with High Resonance Frequency and Low Stiffness for High-speed AFM Applications in Liquid Environments

, 2020
Conventional scanning probes for high-speed AFM applications are free-standing beams vibrating in one-dimensional modes, i.e. Euler Bernoulli modes. However, in these types of scanning probes high resonance frequencies and low spring constants are ...
Platz, Daniel, Hinterdorfer, P, Canena, Daniel, Hafner, Jonas, Schneider, Michael, Schmid, Ulrich   +5 more
core  

A simple and generic CAD/CAM approach for AFM probe-based machining [PDF]

, 2015
Atomic Force Microscopy (AFM) probe-based machining allows surface structuring at the nano-scale via the mechanical modification of material. This results from the direct contact between the tip of an AFM probe and the surface of a sample. Given that AFM
THIERY, Stéphane, Brousseau, Emmanuel Bruno Jean Paul, BROUSSEAU, Emmanuel, ARNAL, Benoît, NYIRI, Eric, GIBARU, Olivier   +5 more
core  

Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites

Advanced Functional Materials, EarlyView.
A mechanism of how Pb‐chelation chemistry governs coordination geometry and initial nucleation behavior at the precursor level of halide perovskite, by regulating the deprotonation state of a chelating additive, is elucidated. This allows for innovative reaction‐system design principles that promote coherent growth while suppressing defect formation in
Byeong Jun Kim, Inseo Cho, Jung Geon Son, Yifan Yu, Gunhee Kim, Eunseo Shin, Seyeon Eom, Minsub Um, Subeom Shin, Hyungju Ahn, Dong Suk Kim, Hochan Song, Hyosung Choi, Jonghee Yang   +13 more
wiley   +1 more source

Investigation of photosynthetic membrane structure using atomic force microscopy

, 2013
International audiencePhotosynthetic processes, including light capture, electron transfer, and energy conversion, are not only ensured by the activities of individual photosynthetic complexes but also substantially determined and regulated by the ...
Scheuring, Simon, Liu, Lu-Ning
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Dynamic Analysis of AFM in Air and Liquid Environments Considering Linear and Non-linear Interaction Forces by Timoshenko Beam Model [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2015
The atomic force microscopy of the cantilever beam frequency response behaviour in the liquid environment is different in comparison with air environment.
P. Maleki Moghadam Abyaneh, M.H. Korayem, B. Manafi, M. Damircheli   +3 more
doaj  

Dual‐Function Interface Engineering for δ‐Phase‐Free Crystallization Toward Efficient and Stable FAPbI3 Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
This work presents a dual‐function interface engineering strategy using PEACl to suppress the formation of the non‐perovskite δ‐FAPbI3 phase at the critical SnO2 buried interface. This approach enables the direct crystallization of the photoactive α‐phase, yielding highly efficient and stable rigid (25.6%) and flexible perovskite solar cells with ...
Xiao Wu, Shengyuan Wang, Pok Fung Chan, Zhenyi Ni, Hengkai Zhang, Chun‐Jen Su, Junyi Zhu, Xinhui Lu   +7 more
wiley   +1 more source

Geometrical Parameters of Rectangular AFM Cantilevers Producing Highest Sensitivity in Excitation of Second Mode in Air Environment [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2017
Today, improving the quality of the images acquired by the atomic force microscope (AFM) and obtaining the close properties of various samples are among the most important and challenging issues tackled by researchers.
Mehrnoosh Damircheli
doaj