ELECTROCHEMISTRY AT THE TIP The Sensolytics SECM Modular System Customized Solutions for Detection of Local Electrochemistry Sensolytics Base SECM Easyly Operated Software Option AC Impendance Spectroscopy Option High­Res (FRA Module) Structure Size < 10 µm Option Video Option Shearforce Visual Prepositioning Structure Size < 1 µm The starting point for all SECM experiments. ■ xyz-positioning system: 25 mm/axis (stepper Compact size and open design for increased motors, calc. min. step width 20 nm) fl exibility. Electrodes ■ Electrode beginners kit and a test structure included Unique Variety ■ Versatile PMMA measuring cell ■ Sensolytics SECM software ■ Combination with Autolab potentiostats Magnetic system for a secure and convenient attach-Base SECM ment of the tip ■ Minimizes risk of tip break SPECM Accessories ■ Additional screw for immovable fi xture Electrochemical ■ Adapted clamps for different glass diameters avai-Scanning Measuring Cells lable Photoelectrochemical Microscopy ■ Specifi cally adapted for SECM experiments inside a glove box SDC Scanning Droplet Cells Technique Sensolytics SECM systems grow with your specifi c requirements. Sensolytics customers are free to upgrade their system with additional features at any time. OPTION HIGH­RES Additional piezoelectric positioning system mounted in the tip holder for high resolution movements OPTION AC ■ Travel range (x, y, z): 100 µm/axis Impedance spectroscopy performed at the tip in close distance to the sample surface (AC-SECM). ■ Resolution: 1 nm (closed-loop, strain gauge sensor) Investigation of sample interface even without added This option additionally provides a software-based redox mediator and in highly diluted solutions. Parti-tilt correction procedure for elimination of tilt effects cularly interesting for corrosion applications. between tip and sample surface. Full impedance spectra at each point of the scanned grid or scan at one fi xed frequency with Autolab FRA module (Frequency range: 10 µHz – 1 MHz). OPTION SHEARFORCE OPTION ANALOG IN Constant-distance mode imaging for electrodes in the submicrometer range and rough samples Allows reading analog signals from up to eight ex-ternal data sources, e.g. for combining SECM with ■ Deconvolution of topography and activity effects further analysis techniques. ■ Set of piezoelectric actuators and starter set of tips All channels are equipped with BNC connectors and included have a max. input limit of 10 V. ■ On site training included Utilizes Option High-Res and vibratory nanoelec-trodes. FARADAY CAGE Shielding for Sensolytics SECM systems with compact size (W 50 x H 45 x D 70 cm) specifi cally adapted to SECM base plate dimensions. OPTION VIDEO Convenient door for experiment handling, sealed cable inlets and decoupled from positioning system Visual control of tip prepositioning to avoid vibration transmission. ■ Long working distance optics with manual magnifi - cation ■ Monochrome USB CCD camera for high defi nition images LINEAR STAGE UPGRADES ■ Live-view and capture is integrated in the SECM Extended travel range for positioning system up to software for convenient tip observation 145 mm. The position is freely adjustable for optimal angle of view at any time. Looking for further customized solutions? Get in contact with us via info@sensolytics.de. We will be happy to explore with you your individual instrument confi guration. Scanning Photoelectrochemical Scanning Droplet Cell SDC Microscopy SPECM Local illumination and simultaneous electrochemical Localization of electrochemical investigation by mo-detection via optical fi ber and Au ring electrode. bile miniaturized electrochemical cell ■ Only small surface area is in contact with electro-lyte ■ Precise head positioning via force sensor control ■ Large samples and demanding sample contours accessible with linear stages up to 145 mm travel distance ■ SDC tip openings in 1.0 mm, 0.5 mm or 0.2 mm diameter, customization possible ■ Micro-metering pump with 1 µl smallest volume for reproducible droplet formation ■ Fully automatic procedures for exchange of elec-trolyte ■ ■ Sequence of electrochemical experiments at each Core diameter: 200 µm grid point ■ Cladding diameter: 220 µm ■ AC-SDC ■ Coating diameter: 255 µm ■ SDC head directly usable in SECM tip holder ■ Wavelength range: 190–1250 nm (UV-Vis) The SPECM tip fi ts in our standard SECM electrode holder. Its rear end is equipped with a SMA connector. Complete system with light source or use of own components possible. SECM on Inverse Optical SDC for Photoelectro­ Microscope chemistry Upgrade of any Sensolytics SECM system with in-Integrated light fi ber for local illumination verse optical microscope Complete system with light source and shutter or use ■ Suitable particularly for biological applications of own components ■ Adapters for standard petri dishes and standard Sensolytics SECM measuring cell Electrodes Measuring Cells Platinum 100 µm, 50 µm, 25 µm, 10 µm, 5 µm and 1 µm Gold 100 µm, 50 µm, 25 µm, 10 µm Wide variety of Sensolytics SECM measuring cells Platinum, nano 200–500 nm and available for unique fl exibility in sample geometry 500–1000 nm Carbon fi ber 7–9 µm (polymer insulated) The resolution of SECM experiments depends on the Platinum Counter electrodes diameter of the utilized microelectrode (the SECM (coil and net type) tip). Higher spatial resolution requires the use of tips with smaller active diameters. Nickel 10 µm, 25 µm Sensolytics provides the broadest selection of electro-Micro-twin- Platinum 10 µm/10 µm des for SECM in the market. electrode Platinum 25 µm/25 µm Further materials and customized designs on request. All electrodes optionally available with gold contact pin. Versatile measuring cell included in Base SECM with adjustable base plate for manual tilt compensation and distance pieces for height adaptation Reference and counter electrode securely fi xed for reproducible experiment setup PMMA for easy positioning of tip due to transparent ELECTRODE POLISHING SET design, PEEK cells for enhanced chemical stability Easy to use manual cleaning set for microelectrodes for reproducible electrode pretreatment Refi ll sets of different sizes Specialized cells for stick electrodes, complete wafer, with temperature control, solution or gas ELECTRODE HOLDER FOR MEASURING CELLS exchange. WITH STANDARD JOINT Holder for fi xation of microelectrodes in electrochemical measuring cells with standard joint NS14 Your sample geometry is not matched? Please contact us and ask for your customized measuring cell. Option PicoPlot Sensolytics Base SECM Three axes steppermotor-driven stage on base plate with size of 30 x 45 cm Piezoelectric dispensing device for sample preparation, e.g. material libraries Travel range: 25 x 25 x 25 mm*, min. step width: 20 nm (calc.), repeatability (bidirectional): < 15 µm ■ Dispensing head for droplet sizes of 100–200 pl or 600–1100 pl [*each axis can be extended to 50, 70, 95 or 145 mm travel range upon customer request] ■ Dispensable media: Dextrane solutions, Glycerol (< 50 % in H2O), Polymers, Proteins (< 5 mg/ml in PMMA measuring cell with adjustable baseplate size 65 x 65 mm, opening PBS) and many others for sample about 17 mm diameter, volume up to 20 ml Beginners kit consisting of electrode set (10 µm and 25 µm Pt microelectrode, counter and reference electrode), training structure, polishing starter kit Sensolytics SECM systems are designed for the operation with Metrohm Autolab potentiostats. The Autolab potentiostat is directly controlled by the SECM software and synchronized with all other components. Sensolytics Software Detection Modes (among others) Feedback Mode, Generator-Collector Mode, Direct Mode, multidimensional SECM, OCP maps, automatic approach func-The intuitive and easy to use SECM Software includes all necessary features for a reliable and fl exible experimental design ■ On-line preview of experiment results, 3D visuali-zation of array scan data including graphic export, topography image for constant-distance mode, automatic approach curve, tilt compensation ■ Complete EC experiments performed at each grid point ■ Impedance spectra for AC-SECM (Nyquist and Bode plots, 3D images for Array Scans for real and imaginary part, modulus and phase at each frequency) ■ Different modes of tip movement during array scans ■ Current-independent constant-distance mode for high-resolution experiments (Option Shearfoce) Mira Powerful analysis software package not only for SECM data fi les. Various data representation options, analysis and curve fi tting tools. Developed by Prof. Dr. Gunther Wittstock, Carl von Ossietzky Universität Oldenburg. ©2019 Sensolytics reserves the right to change specifi cations without notice Sensolytics GmbH Universitaetsstrasse 142 · 44799 Bochum · Germany www.sensolytics.de