scholarly journals From Bubbles to Nanobubbles

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2592
Author(s):  
George Z. Kyzas ◽  
Athanasios C. Mitropoulos
Keyword(s):  
Atomic Force Microscopy ◽  
Brownian Motion ◽  
Force Microscopy ◽  
Atomic Force ◽  
Preliminary Communication ◽  
The Stability ◽  
The Moment ◽  
Standing Problem

Nanobubbles are classified into surface and bulk. The main difference between them is that the former is immobile, whereas the latter is mobile. The existence of sNBs has already been proven by atomic force microscopy, but the existence of bNBs is still open to discussion; there are strong indications, however, of its existence. The longevity of NBs is a long-standing problem. Theories as to the stability of sNBs reside on their immobile nature, whereas for bNBs, the landscape is not clear at the moment. In this preliminary communication, we explore the possibility of stabilizing a bNB by Brownian motion. It is shown that a fractal walk under specific conditions may leave the size of the bubble invariant.

In Situ and Real-Time Atomic Force Microscopy Studies of the Stability of Oligothiophene Langmuir–Blodgett Monolayers in Liquid

2014 ◽  
Vol 118 (11) ◽  
pp. 5789-5795 ◽  
Author(s):  
Nai-Ning Yin ◽  
Alexander Buyanin ◽  
Shawn L. Riechers ◽  
Olivia P. Lee ◽  
Jean M. J. Fréchet ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Real Time ◽  
Force Microscopy ◽  
Langmuir Blodgett ◽  
Atomic Force ◽  
The Stability

scholarly journals Методы атомно-силовой микроскопии для исследования суперпротонных кристаллов

2020 ◽  
Vol 90 (11) ◽  
pp. 1843
Author(s):  
Р.В. Гайнутдинов ◽  
А.Л. Толстихина ◽  
Е.В. Селезнева ◽  
И.П. Макарова
Keyword(s):  
Atomic Force Microscopy ◽  
Surface Morphology ◽  
Ammonium Sulfate ◽  
Paraelectric Phase ◽  
Piezoelectric Response ◽  
Force Microscopy ◽  
Atomic Force ◽  
Microscopy Data ◽  
The Stability ◽  
First Time

Complex studies of new superprotonic crystals - acidic salts of potassium – ammonium sulfate (K1-x(NH4)x)3H(SO4)2, x ≥ 0.57 were carried out. Data on surface morphology, domain structure and conductivity of samples were obtained using atomic force microscopy. For the first time, the stability and degradation of the surface of superprotonic crystals were studied at the nanoscale. Based on piezoelectric response microscopy data, it was found that when the temperature decreased from 296 to 282 K, the (K0.43(NH4)0.57)3H(SO4)2 crystal transits from the paraelectric phase to the ferroelectric one.

Stochastic Switching and Reduction of Integrity in Atomic Force Microscopy

2018 ◽  
Author(s):  
Pierpaolo Belardinelli ◽  
Stefano Lenci ◽  
Farbod Alijani
Keyword(s):  
Atomic Force Microscopy ◽  
Stable State ◽  
State Assessment ◽  
Force Microscopy ◽  
Regime Changes ◽  
Atomic Force ◽  
Stochastic Switching ◽  
Imaging And Spectroscopy ◽  
The Stability ◽  
Ultimate Condition

In the presence of more than one stable state, assessment of stability is crucial for a proper device characterization. This is of particular importance in atomic force microscopy due to rich dynamics exhibited by the oscillating microcantilever probe that interacts with a sample. Indeed, the multistability can evolve in dramatic regime changes. This work aims at investigating the stochastic switching in which perturbations are responsible for shifts between alternative states with consequences in imaging and spectroscopy. The deceptively straightforward identification of the stability highlights noise-activated escapes. The barrier crossing from metastable wells in the atomic force microscopy leading to problematic configurations are observed in a variety of different configurations with the stochastic resonance as ultimate condition. Our analysis sheds light on the effect of combined additive noise and external excitation. The noise-induced erosion of the attractive domain shows a progressive reduction of the dynamical integrity of amplitude modulation atomic force microscopes.

Protein uptake into individual hydrogel microspheres visualized by high-speed atomic force microscopy

2019 ◽  
Vol 55 (68) ◽  
pp. 10064-10067 ◽  
Author(s):  
Shusuke Matsui ◽  
Kensuke Hosho ◽  
Haruka Minato ◽  
Takayuki Uchihashi ◽  
Daisuke Suzuki
Keyword(s):  
Atomic Force Microscopy ◽  
High Speed ◽  
Force Microscopy ◽  
Protein Uptake ◽  
Atomic Force ◽  
The Moment ◽  
Hydrogel Microspheres

The moment of protein uptake into hydrogel microspheres (microgels) was directly monitored at the nanoscale by high-speed atomic force microscopy, and suitable design of microgels to suppress the aggregation in the presence of proteins was found.

scholarly journals Interactions of Secondary DNA and Initial DNA on Single-Walled Carbon Nanotube Surfaces Studied by Photoluminescence, Atomic Force Microscopy, and Electrophoresis

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Reona Toyofuku ◽  
Shusuke Ohura ◽  
Masahiro Ito ◽  
Yoshikazu Homma ◽  
Kazuo Umemura
Keyword(s):  
Atomic Force Microscopy ◽  
Near Infrared ◽  
Dna Molecules ◽  
Force Microscopy ◽  
Single Walled Carbon ◽  
Atomic Force ◽  
Significant Difference ◽  
Cross Links ◽  
The Stability ◽  
Walled Carbon Nanotubes

We examined the interactions of initial single-stranded DNA (ssDNA) and secondary ssDNA molecules on single-walled carbon nanotubes (SWNTs). Thymine 30-mers (T30) and 30-mers from a partial sequence of φx174 DNA (φ30) were used to prepare the DNA-SWNT hybrids. First, the hybrids were annealed at various temperatures without secondary DNA to evaluate the stability of the hybrids. As a result, aggregates of SWNTs were formed in the T30-SWNT hybrids, even at 54°C, although the φ30-SWNT hybrids were stable up to 84°C. Second, we added secondary DNA molecules during the annealing procedure. We reacted adenine 30-mers (A30) with the T30-SWNT hybrids and characterized the samples by combining agarose gel electrophoresis with/without ethidium bromide and atomic force microscopy (AFM) as well as near-infrared photoluminescence (PL) spectroscopy. Cross-links appeared to form among the SWNTs because of nonspecific hybridization of T30 and A30. PL measurements revealed clear shifts in the PL emission wavelength of SWNTs. However, when complementary φ30 DNA (cφ30) was reacted with φ30-SWNT hybrids, there was no significant difference in the PL spectra after the reaction, although electrophoresis suggested the hybridization of the cφ30 and φ30 DNA molecules. Our results suggest that the hybridization manner of DNA molecules with unnatural sequences greatly differs from that of natural DNA molecules.

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