AFM Probes

Optical control of polarization in ferroelectric heterostructures

by NANOSENSORS
17 December 201815 March 2023
Science & Technology

Figure 1 from “Optical control of polarization in ferroelectric heterostructures”: Electrically induced polarization switching in the MoS2/BaTiO3/SrRuO3 junction. a, b PFM phase (a) and amplitude (b) images after application of a negative voltage pulse (−5 V, 0.5 s) to the MoS2 flake. The 12-u.c.-thick BTO film underneath the MoS2 flake is fully switched to the upward polarization, Pup. c, d PFM phase (c) and amplitude (d) images after application of several positive voltage pulses (+5 V, 0.5 s) to the MoS2 flake. BTO underneath the MoS2 flake is fully switched to downward polarization, Pdown. The polarization state of the bare BTO film (at the lower right corner) is not affected by the electrical bias. e, f The I–V characteristics of the same junction measured in the dark and during illumination. The tunneling current for the OFF state (Pup) is largely increased under illumination. Silicon AFM probes with Pt/Ir conductive coating and nominal stiffness of 3 N m−1 (PPP-EFM, NANOSENSORS) were used to perform the KPFM and PFM measurements.

“In the ferroelectric devices, polarization control is usually accomplished by application of an electric field.”* In the article “Optical control of polarization in ferroelectric heterostructures”… Read More »Optical control of polarization in ferroelectric heterostructures

Room Temperature Polarization Phenomena in Nanocrystalline and Epitaxial Thin Films of Gd-Doped Ceria Studied by Kelvin Probe Force Microscopy

by NANOSENSORS
4 December 201815 March 2023
Science & Technology

Figure 1 from "Room Temperature Polarization Phenomena in Nanocrystalline and Epitaxial Thin Films of Gd-Doped Ceria Studied by Kelvin Probe Force Microscopy": Schematic of the experimental setup, NANOSENSORS PPP-NCST-Pt AFM probes were used

In their study “Room Temperature Polarization Phenomena in Nanocrystalline and Epitaxial Thin Films of Gd-Doped Ceria Studied by Kelvin Probe Force Microscopy” Kerstin Neuhaus, Giuliano… Read More »Room Temperature Polarization Phenomena in Nanocrystalline and Epitaxial Thin Films of Gd-Doped Ceria Studied by Kelvin Probe Force Microscopy

Get free NANOSENSORS qp-fast AFM probes at booth 610 at MRS Fall 2018

by NANOSENSORS
27 November 201815 March 2023
News & Events

NANOSENSORS uniqprobe qp-fast AFM probe

Are you looking for AFM probes with unsurpassed small variation in spring constant and resonance frequency? Then visit the NanoAndMore USA booth no. 610 at… Read More »Get free NANOSENSORS qp-fast AFM probes at booth 610 at MRS Fall 2018

A fibrin biofilm covers blood clots and protects from microbial invasion

by NANOSENSORS
28 October 201815 March 2023
Science & Technology

Supplemental Figure. 6. From Macrea et. al “A fibrin biofilm covers blood clots and protects from microbial invasion” Mechanisms and roles of fibrin film. A, Sneddon model used to calculate Young’s Modulus, where F is the force from the force curve, E is Young’s modulus, ν is Poisson’s ratio (0.5), α is the half angle for the indenter (15 degrees for our tips), and δ is the indentation. Note that this equation is only accurate with a half angle of 15 degrees for the first 200nm of indentation. B, Strength of the fibrin film in clots produced with plasma and thrombin with or without T101 (FXIII inhibitor ) investigated using atomic force microscopy (AFM). Fibrin fibres were visible under the film surface and these areas presented with stiffer Young’s modulus than fibrin film suspended between fibres. Grey lines in the zoomed-in images represent Young’s modulus scan area represented in the line force graphs. Scale bar - 2μm. C, Young’s Modulus was calculated for the suspended film and the film supported by fibers with and without T101 by fitting a Sneddon model to all AFM force curves found over the entire area that was imaged. 20 measurements were taken for each condition. **** P

New interesting publication by Macrea et. al mentioning the use of NANOSENSORS uniqprobe qp-BioAC: “Hemostasis requires conversion of fibrinogen to fibrin fibers that generate a… Read More »A fibrin biofilm covers blood clots and protects from microbial invasion

See you at AVS in Long Beach CA today

by NANOSENSORS
25 October 201815 March 2023
News & Events

Manfred Detterbeck at AVS 65th International Symposium and Exhibition.

Meet our CEO this week at AVS 65th International Symposium and Exhibition in Long Beach CA.

Resonant torsion magnetometry in anisotropic quantum materials

by NANOSENSORS
1 October 201815 March 2023
Science & Technology

Figure 1 from "Resonant torsion magnetometry in anisotropic quantum materials": Schematic overview of resonant torsion magnetometry. a First and second derivatives of the free energy with respect to the magnetic field B and the field orientation θ. b The quartz tuning fork of the Akiyama A-probe (http://www.akiyamaprobe.com) is electrically excited at the lowest-resonance mode of the silicon cantilever, producing a large out-of-plane motion at the tip of the cantilever. c Schematic representing the principle of measuring the magnetotropic coefficient k. In a magnetic field, the magnetic torque brings the lever to a new equilibrium position. The magnetic energy of the samples changes the effective stiffness of the lever, leading to a shift in the resonant frequency. d The silicon cantilever glued to each leg of the quartz tuning fork with a single crystal of RuCl3 mounted at the tip with Bayer silicone grease

Who said that AFM probes can only be used for Atomic Force Microscopy? In the article “Resonant torsion magnetometry in anisotropic quantum materials” which just… Read More »Resonant torsion magnetometry in anisotropic quantum materials

MAC Mode Cantilevers for Keysight, Agilent and Molecular Imaging AFMs now available from NANOSENSORS

by NANOSENSORS
17 September 201815 March 2023
News & Events

MAC mode imaging of lambda phage DNA in a buffer solution. Image courtesy of Keysight Technologies

Do you have a Keysight, Agilent or Molecular Imaging Atomic Force Microscope in your lab? Are you using MAC Mode (Keysight Technologies’ patented magnetic AC… Read More »MAC Mode Cantilevers for Keysight, Agilent and Molecular Imaging AFMs now available from NANOSENSORS