Season’s Greetings 2024Fri Dec 20 2024
Season’s Greetings from the whole NanoWorld® AFM probes team!
Enjoy the holiday season with your friends and family. We are looking forward to another year with you!
sQube wishes everyone wonderful holidays!Thu Dec 19 2024
Wishing you a wonderful holiday season from sQube®!
Happy holidays from BudgetSensors®Thu Dec 19 2024
Wishing you a bright New Year from your friends at BudgetSensors®!
Happy Holidays from everyone at MikroMasch®Thu Dec 19 2024
Happy Holidays from everyone at MikroMasch®. We hope your holidays will be filled with joy and laughter through the New Year.
Energy dissipation on magic angle twisted bilayer grapheneThu Dec 12 2024
Traditional Joule dissipation omnipresent in today’s electronic devices is well understood while the energy loss of the strongly interacting electron systems remains largely unexplored. #Twistedbilayergraphene ( #tBLG) is a host to interaction-driven correlated insulating phases, when the relative rotation is close to the magic angle (1.08∘). *
In the article “Energy dissipation on magic angle twisted bilayer #graphene” Alexina Ollier, Marcin Kisiel, Xiaobo Lu, Urs Gysin, Martino Poggio, Dmitri K. Efetov and Ernst Meyer report on low-temperature (5K) nanomechanical energy dissipation of tBLG measured by #pendulumatomicforcemicroscopy ( #p_AFM). *
Owing to high force sensitivity, pendulum geometry Atomic Force Microscopy (p-AFM), oscillating like a tiny pendulum over the surface, is perfectly suited to measure tiny amounts of energy loss.*
The ultrasensitive cantilever tip acting as an oscillating gate over the quantum device shows dissipation peaks attributed to different fractional fillings of the flat energy bands. Local detection allows to determine the twist angle and spatially resolved dissipation images showed the existence of hundred-nanometer domains of different doping. *
Application of magnetic fields provoked strong oscillations of the dissipation signal at 3/4 band filling, identified in analogy to Aharonov-Bohm oscillations, a wavefunction interference present between domains of different doping and a signature of orbital ferromagnetism.*
During the Pendulum #AFM energy dissipation measurements, series of insulating states of tBLG were detected under ultra high vacuum (UHV) conditions with highly n-doped silicon NANOSENSORS AdvancedTEC ATEC-CONT tip-view #AFMprobes. * https://www.nanosensors.com/advanced-tip-at-the-end-of-the…
The #AFMcantilever with resistivity ρ = 0.01 − 0.02 Ωcm, spring constant k = 0.18 N/m and frequency f0 = 13 kHz was coupled capacitively to the quantum device, and the #AFMtip oscillation amplitude A = 1 nm was parallel to the sample surface (pendulum geometry). The sensor was annealed before experiment at 700∘ under UHV conditions for 12h. The process leads to removal of water and weakly bounded molecules from the cantilever surface and the tip. Moreover, the long-term annealing minimizes the amount of the static charges localized at the AFM tip. *
Please have a look at the NANOSENSORS blog for the full citation and a direct link to the full article.
BudgetSensors® platinum coated ElectriMulti75-G AFM probes have been used throughout this work for PFM, EFM, C-AFM and 3D topography imagingMon Dec 09 2024
Check out this amazing study presenting a programmable flexoelectric engineering platform for nanoconfined conductive filaments in free-standing 2D ferro-ionic memristors!
“In conclusion, we envision that our universal free-standing platform can provide the extendable geometric solution for ultra-efficient self-powered system and reliable neuromorphic device.”
Our platinum coated ElectriMulti75-G AFM probes have been used extensively throughout this work for PFM, EFM, C-AFM and 3D topography imaging.
Booth no. 402 is ready to welcome you at the MRS Fall 2024Mon Dec 02 2024
After our usual speedy build-up our @nano_and_more USA #AFMprobes booth no. 402 is ready to welcome you at the @materials_mrs MRS Fall 2024 exhibit at the Hynes Convention center in Boston.
No matter if you are interested in #characterization, #topography, #softmaterials, #biomaterials, or conductive atomic force microscopy for #2Dmaterials and more you will find your solutions among the offered #AFMprobes by NanoWorld, NANOSENSORS, nanotools, BudgetSensors, MikroMasch , Opus, Olympus and sQube Colloidal AFM Probes .
For the next three days we are here to discuss with you what kind of #AFMtips solutions we offer for your #atomicforcemicroscopy investigations. Hope to see you soon!
Opening hours:
Tuesday, December 3 | 11:00 am - 6:00 pm
Wednesday, December 4 | 10:00 am - 6:00 pm
Thursday, December 5 | 10:00 am - 1:00 pm
Coating that Mimics Topography and Perspiration Behavior of Human FingertipsWed Nov 27 2024
Discover how nanotools biosphere™ with 20nm radius are applied to recording force maps in contact mode and then extract the Young’s modulus in different areas of the coating.
- Title: Reversible Perspiring Artificial “Fingertips”
DOI: https://doi.org/10.1002/adma.202209729 - Authors: Dongyu Zhang, Jacques Peixoto, Yuanyuan Zhan, Mert O. Astam, Tom Bus, Joost J. B. van der Tol, Dirk J. Broer, Danqing Liu
- Publication: Advanced Materials
- Publisher: Wiley-VCH GmbH
- Date: 06 February 2023
Local probing of the nanoscale hydration landscape of kaolinite basal facets in the presence of ionsTue Nov 26 2024
Kaolinite is one of the most abundant natural clay minerals within soils at the Earth's surface and within rock units in the upper crust. *
The interface between aqueous solutions and the facets of kaolinite plays an important role in a wide range of technological applications including #tribology, paper production, oil recovery, waste water treatment and medical devices. *
This is made possible by kaolinite's layered structure, with its two basal surfaces -#aluminol and #siloxane-exhibiting different properties and reactivity. *
Both macroscopic and #nanoscale studies point to a strong dependence of kaolinite's surface properties on its local hydration structure. No experimental results, however, have systematically and comparatively investigated the hydration landscape of both basal facets to date. *
In the article “Local probing of the nanoscale hydration landscape of kaolinite basal facets in the presence of ions” Clodomiro Cafolla, Tai Bui, Tran Thi Bao Le, Andrea Zen, Weparn J. Tay, Alberto Striolo, Angelos Michaelides, Hugh Christopher Greenwell and Kislon Voïtchovsky combine high-resolution #atomicforcemicroscopy ( #AFM) imaging and #forcespectroscopy with classical molecular dynamics (MD) simulations to illustrate key differences in the hydration behaviour of the aluminol and siloxane facets of kaolinite particles immersed in water and NaCl solutions. *
This combined approach allows the authors to overcome the limitations of each technique via the advantages of the other. Specifically, AFM images highlight the differences in the first hydration layer of each facet and serve as a basis for force spectroscopy measurements of the full hydration profile at a given location. *
Water densities extracted from MD help interpret the AFM results, both in the absence and in the presence of added Na+ ions. *
Complementary #AFMspectroscopy measurements show an excellent agreement between the conservative component and MD's water density profiles, with discrete hydration layers on both facets and little sensitivity to added ions. *
The dissipative component of the measured AFM tip-sample interactions is more sensitive to the presence of ions, with MD suggesting a link with the local water dynamics and transient instabilities between stable hydration layers. *
These effects are facet-dependant and more pronounced on the aluminol facet where the first water layer is better defined. Increasing the salt concentration allows hydrated ions to form more stable layers, with hints of organised ionic domains. *
The results provide unique insights into both the equilibrium molecular structure and dynamics of the kaolinite facets, potentially informing applications involving interfacial processes. *
The AFM experiments were conducted at 25 ± 0.1 °C using a commercial #atomicforcemicroscope equipped with temperature control.
NanoWorld Arrow-UHF silicon #AFMprobes were used.
The #AFMcantilevers were thoroughly washed with pure water (20 times with 100 μl) and then with the solution of interest (40 times with 100 μl).
Experiments were performed at near neutral pH 5.8. This ensured that only the metal ions of interest were present on the AFM cantilever. Thorough cleaning procedures were implemented to avoid any possible sources of contamination. *
During the measurements, the AFM cantilever and the sample were fully immersed in the aqueous ionic solution of interest. The thermal spectrum of the AFM cantilever was used to perform the flexural calibration of the AFM cantilevers. The AFM probes were found to have a flexural spring constant in the range 1.0–4.0 N/m and a resonance frequency of ∼400–900 kHz in water. These values agree with the nominal range and the literature. The AFM cantilever oscillation was photo-thermally driven to ensure greater stability, making sure that the frequency response remained unaffected by any spurious contributions due to the noise produced by mechanical coupling with other experimental components of the system. *
Please have a look at the NanoWorld blog for the full citation and a direct link to the full article:
MikroMasch® HQ:NSC35/Cr-Au AFM probes are used for phase composition-contrast measurementsMon Nov 18 2024
This study investigates the effects of water released from boehmite nanoparticles in polymer nanocomposites. While the incorporation of the nanoparticles in the epoxy increases its overall stiffness, water released from undried nanoparticles leads to the formation of a soft interface around them and a significant decrease in the crosslink density.
MikroMasch® HQ:NSC35/Cr-Au AFM probes are used for phase composition-contrast measurements.
sQube colloidal AFM probes with 3.3µm SiO2 microspheres on soft silicon nitride AFM cantilevers (0.08N/m) are used for accurate measurements of the interaction forces with graphene sheets deposited on silicon wafers.Fri Nov 15 2024
“Graphene-water interface is electrically charged. The broad evidence presented in this paper from a variety of different techniques shows that the favorable interaction between hydroxide ions and graphene is the reason for this charge, which allows the preparation of additives-free, stable aqueous graphene dispersions. A posteriori, this fact is not enigmatic, and indeed, it becomes flawless in hindsight: charged interfaces are the rule, and non-charged interfaces are clearly the exception.”
A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2Fri Nov 15 2024
#Molybdenumdisulfide ( #MoS2) is commonly used as a dry lubricant due to its enhanced performance in the absence of oxygen and its elevated temperature stability, which make it suitable for extreme environmental conditions. For these reasons, MoS2 has well-established applications in the automotive and aerospace industries, metal forming and cutting tools, electrical contacts, and nano- and micro-electromechanical systems.*
In this context, it is well-known that crystalline forms of MoS2 have better frictional properties as compared to amorphous ones. They are also less sensitive to humidity and atmospheric conditions.*
However, crystalline MoS2 tends to exfoliate during sliding if the loading forces are too high, resulting in high wear, coefficient of friction (COF), and low stability. To improve the design and durability of components based on MoS2 there is a need to explore the tribological behavior of MoS2 in alternative forms, and to characterize their early-stage #wearbehavior down to the #nanoscale.*
Experimental #characterizations such as those made possible by #atomicforcemicroscopy (AFM) are the most important tool to gain quantitative insights on the wear resistance of those #materials on the nanoscale.*
In the article “A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2” by Hesam Khaksar, Prashant Mittal, Nabil Daghbouj, Grzegorz Cios, Tomas Polcar and Enrico Gnecco, the wear behavior of two amorphous and polycrystalline forms of MoS2 prepared by magnetron sputtering is characterized in a combined nanoindentation and atomic force microscopy (#AFM) study supported by Raman and transmission electron microscopy (TEM) analysis.*
From the #morphology of wear tracks estimated after scratching the surfaces with a Berkovich indenter and a loading force up to 2 mN, the authors conclude that, on the microscale, both forms follow the Archard’s wear equation, and the wear resistance is about four times higher on the amorphous MoS2.*
The coefficient of #friction is much lower on the worn areas, which is associated to significant smoothing of the surfaces caused by the scratching process. With normal forces in the µN range, the analysis is made difficult by the fact that the linear dimensions of the wear tracks are comparable to those of the smallest surface features.
Even if the #Archardsequation looses validity, the #wearresistance is considerably larger on amorphous MoS2 also on the nanoscale.*
The results presented by Hesam Khaksar et al. conclude that the polycrystalline form of MoS2 has poor tribological properties at the micro/-nanoscale as compared to the amorphous form and hence less suited as a solid coating in ambient conditions.*
NANOSENSORS™ diamond coated PointProbe®Plus DT-NCHR AFM probes (typical force constant: 80 n/m, typical macroscopic AFM tip radius of curvature between 100 and 200 nm) were used to create the scratches and capture the images, allowing for a detailed examination of the surface features and material properties.
For AFM-based friction measurements, NANOSENSORS™ PointProbe®Plus PPP-LFMR AFM probes, with a typical force constant of 0.2 N/m were employed.
NANOSENSORS™ PointProbe®Plus PPP-NCHR AFM probes (typical force constant: 42 N/m typical resonance frequency 330 kHz) were used for standard tapping mode imaging.
Please have a look at NANOSENSORS blog for the full citation and a direct link to the full article: https://www.nanosensors.com/…/a-comparative…/
Seeing so much enthusiasm for science gives us great hope for the future!Tue Nov 12 2024
NanoAndMore Europe would like to thank the organizers and participants of the 2024 Dutch #ScanningProbeMicroscopy Day for the opportunity to attend. The event, hosted at the @universityofgroningen, was organized by Prof. Roberto Lo Conte , and the venue, the Feringa Building, was truly impressive with its fascinating architecture.
Alongside the high-calibre presentations, we enjoyed many engaging conversations at our booth. We were also delighted to meet numerous curious and bright students who, as part of the University College Groningen Open Day happening simultaneously, found their way to our booth.
Seeing so much enthusiasm for science gives us great hope for the future!
NanoWorld CEO Manfred Detterbeck is at Semicon Europa 2024 in Munich this weekTue Nov 12 2024
Feel free to have a chat about your #semi related #atomicforcemicroscopy applications when you meet him.
BudgetSensors® silicon AFM probes feature the so-called ‘rotated AFM tips’Tue Nov 12 2024
Our silicon AFM probes feature the so-called ‘rotated AFM tips’. Rotated AFM tip pyramids have steeper sidewalls on the side facing away from the holder chip.
When mounted in the AFM system’s probe holder at the standard 10-13° angle, rotated AFM tips allow symmetric representation of high, steep features on the sample surface.
NanoAndMore GmbH will have a booth that this year’s Dutch SPM Day on Friday, November 8th, 2024.Fri Nov 08 2024
Meet us at Zernike Campus, at University of Groningen and find out more about the many #AFMprobes from well-known manufacturers such as NANOSENSORS NanoWorld , nanotools , BudgetSensors , MikroMasch , Opus, Olympus and sQube we offer and feel free to discuss your #atomicforcemicroscopy applications with us.
The Dutch Scanning Probe Microscopy Day is an annual one-day conference that aims at bringing together experts from all fields of #scanningprobemicroscopy research in academia as well as industry within the Netherlands, Belgium and Germany.
Invited speakers this year are:
- Pavel Jelinek (Czech Academy of Sciences) talking about:
Resolving anisotropic charge and spin on atomic scale using a functionalized SPM probe
- Alex Weber-Bargioni (Lawrence Berkeley National Laboratory), talking about:
Where does SPM fit into next generation quantum materials explorations
- Kirsten von Bergmann (University of Hamburg), talking about:
Complex magnetic order and interplay of magnetic films with superconductivity
We hope to see you in Groningen soon!
You can find the full program here: https://www.rug.nl/…/loconte…/dutch-spm-day-2024/program
Next Generation Biomaterial for Advanced Delivery Systems for ImmunotherapyFri Oct 25 2024
Discover how nanotools MSS-soft 13deg with 2.8N/m cantilevers, 2nm radius and 15nm diameter measured at 150nm from apex are applied to study the nanoscale architectural features of Ca(OH)2-modified T. weissflogii.
- Title: Modification of Living Diatom, Thalassiosira weissflogii, with a Calcium Precursor through a Calcium Uptake Mechanism: A Next Generation Biomaterial for Advanced Delivery Systems
DOI: 10.1021/acsabm.4c00431 - Authors: Isma Liza Mohd Isa, Akshay Srivastava, David Tiernan, Peter Owens, Peadar Rooney, Peter Dockery, and Abhay Pandit
- Publication: ACS Applied Bio Materials
- Publisher: American Chemical Society
- Date: June 17, 2024
Check out this investigation of the effects of contaminants in the liquid meniscus between the AFM tip and the sample on conductivity.Mon Oct 21 2024
Trying to make sense of your Conductive AFM and I-V spectroscopy measurements? Check out this investigation of the effects of contaminants in the liquid meniscus between the AFM tip and the sample on conductivity. ElectroCont-G and other AFM probes are used in the tests.
@NanoAndMore Japan is exhibiting at the 10t International Symposium on Surface Science in Kita-kyushu, Fukuoka, Japan this weekMon Oct 21 2024
@NanoAndMore Japan https://www.nanoandmore.jp/ is exhibiting at the 10t International Symposium on Surface Science in Kita-kyushu, Fukuoka, Japan https://www.jvss.jp/conference/isss10/scope.html this week.
Please drop by our booth at the Kitakyushu International Conference Center to learn more about the many different #AFMprobe types from NanoWorld , NANOSENSORS , nanotools , BudgetSensors , MikroMasch , Olympus and sQube we offer and feel free to discuss your #atomicforcemicroscopy applications with us.
#表面科学 #材料科学 #材料研究 #AFMカンチレバ #AFMプローブー #高分子科学 #走査型プローブ顕微鏡 #原子間力顕微鏡 #生体材料 #appliedphysics #表面の特性評価#scanningprobemicroscopy #AFM #AtomicForceMicroscopy
Potential-dependent superlubricity of stainless steel and Au(111) using a water-in-surface-active ionic liquid mixtureTue Oct 15 2024
“Achieving and controlling superlubricity to enable energy conservation remains a substantial challenge, despite progress in the development of high-performance lubricants… For the first time, superlubricity has been observed in a water-in-SAIL mixture (1.6 M [BMIm][AOT]) at positively charged Au(1 1 1) and stainless steel. It results from the AFM tip sliding over fluid water molecules in the hydration layer of well-defined [AOT]− bilayers. Superlubricity persists up to a critical normal force, beyond which friction jumps to a high level.”
Friction and normal force AFM measurements have been carried out with HQ:NSC36 series AFM probes.
Highlights
AFM Probe Focus
best of the best
qp-HBC
uniqprobe™ - HeartBeat Cantilever for ScanAsyst®** and Peak Force Tapping™**
Coating:
Reflective Aluminum
Tip Shape: Circular symmetric
Tip Shape: Circular symmetric
AFM Cantilever:
F
60 kHz
C
0.5 N/m
L
115 µm
ATEC-NC
Tapping Mode AFM Probe with REAL Tip Visibility
Coating:
none
Tip Shape: Visible
Tip Shape: Visible
AFM Cantilever:
F
335 kHz
C
45 N/m
L
160 µm
TESPA
Standard Tapping Mode AFM Probe
Coating:
Reflective Aluminum
Tip Shape: Standard
Tip Shape: Standard
AFM Cantilever:
F
320 kHz
C
42 N/m
L
125 µm
OTESPA
Standard Tapping Mode AFM Probe with AFM Tip at the Very End of the AFM Cantilever
Coating:
Reflective Aluminum
Tip Shape: Optimized Positioning
Tip Shape: Optimized Positioning
AFM Cantilever:
F
300 kHz
C
26 N/m
L
160 µm
