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Instant AFM and nanoprobe instrumentation - just add science! View ourAFM Video Tutorial.

MadPLL phase lock loop controller for building tuning fork AFM with nanopositioning systems
MadPLL Atomic Force Microscope Image of a Test Pattern

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Introduction

MadPLLis a powerful instrument package that allows the user to create an inexpensive, high resolution resonant scanning probe microscope using Mad City Labs nanopositioning systems. In short, MadPLLcan be used to create an“instant” closed loop AFMor NSOM at a fraction of the cost of commercial systems. MadPLLis suitable for nanoscale characterization and nanoscale fabrication applications such as optical antennas, nano-optics, semiconductors, data storage, and more.

MadPLLhas been specifically designed for resonant probes such astuning forksandAkiyama probes. In addition MadPLLis fully compatible with Mad City Labs’ high resolution nanopositioning systems which makes it easy for users to build a scanning probe microscope with a flexibility that cannot be achieved with other commercial systems. The seamless integration of hardware combined with the built-in automated control of MadPLLmeans that you can concentrate on getting results.

MadPLLis ideal for research and teaching laboratories offering high performance, versatility, simplicity and excellent value.

FeaturesLow costSoftware, PLL controller, sensor amplifier, and probe boards includedEasy and flexible configurationFully self contained - no external signals requiredAutomated software controlAuto PCC controlAuto Q Calculation, resonant frequency detectionIntegrated Z axis PI control loopFully compatible with Mad City Labs positioning products

What is MadPLL?

MadPLLis an integrated solution that includes the digital phase lock loop (PLL) controller, software, sensor amplifier board and resonant probe mounting board. Simply add yourAkiyama probeortuning forkto the probe board to create a powerful force sensor for scanning probe measurements.

The MadPLLpackage includes the MadPLLdigital PLL controller, sensor board, probe board, and MadPLLsoftware. Ease of integration with resonant probes and Mad City Labs' low noise nanopositioning systems give users the ability to create high performance, low cost NSOM and AFM instruments.

The PLL controller contains a digitally controlled proportional integral (PI) loop designed to work seamlessly with Mad City Labs’ nanopositioning systems. The addition of closed loop nanopositioners adds to the high performance of MadPLL. Additional options are available for multi-axis closed loop nanopositioning control.

The PLL controller has three operational modes: self oscillation, PLL driven, and (lock-in) DDS driven. The probe can be controlled in constant excitation or constant signal mode. Measured outputs from the controller include changes in frequency, amplitude or phase shift.

The digital MadPLLcontroller has three operational modes: self oscillation, PLL driven, and DDS driven. The probe can be controlled in constant excitation amplitude or constant signal amplitude. Changes in frequency, amplitude, or phase are measured for Z control.

The MadPLLpackage includes a digital phase lock loop (PLL) controller, software, sensor amplifier board, and resonant probe mounting board. MadPLLincludes five (5) each of the vertical, horizontal, Akiyama, and blank probe boards. In addition, each unit is shipped with five (5)tuning forks. Additional probe boards and tuning forks can be purchased separately.

The sensor amplifier and probe board assemblies are compact and can be fitted to existing instrumentation. The probe board simply plugs into the sensor amplifier board. The sensor amplifier board can be mounted to a precision positioner such as a closed loop nanopositioning system. The probe board has been designed for use withtuning forksandAkiyama probes. These probes are easy to mount and alignment free.

MadPLLincludes a sensor amplifier board and probe boards. The probe boards are designed for use withtuning forks,Akiyama probesand Accutune probes.

MadPLLSoftware

MadPLLsoftware simplifies the control of your scanning probe microscope. All of the functions of MadPLLare fully automated but accessible via individual software control. Among the software features are automated setup, configuration control, auto-Q calculation and automatic parasitic capacitance compensation (PCC) control. These included features are designed to simplify setup and accelerate the data acquisition process. MadPLLsoftware integrates seamlessly with Mad City Labs' AFMView software. AFMView software is part of our complete SPM development system.

Application - AFM Video Tutorial

Instant AFM - just add science!

MadPLLcan be used to create a customized, high resolutionAkiyama probeortuning forkatomic force microscope (AFM) at a fraction of the cost of commercial systems. MadPLLhas been designed to directly interface with Mad City Labs’ low noise single and multi-axis nanopositioning systems, making it possible to create a fully closed loop AFM. The AFM described is suitable for both research and teaching environments and can be further customized for vacuum operation. MadPLLis suitable for nanoscale characterization and nanoscale fabrication applications such as optical antennas, nano-optics, semiconductors, data storage, and more.

Mad City Labs AFM Assembly Tutorial - How to Build an "Instant" Atomic Force Microscope

Video Bill of MaterialsSPM-M KitMadPLLInstrument Packagedigital phase lock loop (PLL) controllerAkiyama probemounting boardsensor amplifier boardNano-SPM200nanopositioning stage (XY)Nano-OP30nanopositioning stage (Z)3 axis closed loopNano-DrivecontrollerZ axis open loop/close loop switch (OCL option)Adapter plate between preamplifier and Nano-OP30Adapter plate to Thorlabs MT1 micropositionerXY and Z coarse motion:standard stages available from optical component suppliersProbe:Akiyama probeHardware:standard optical mounting fixturesPC:Windows XP/Vista/7 (32 bit or 64 bit compatible)This configuration is a highly flexible, low cost, multi-axis, closed loop Akiyama or tuning fork AFM called theSPM-M Kit. All Mad City Labs nanopositioning systems have low noise PicoQsensors and closed loop feedback control. Using MadPLLthe user can create a high performance scanning probe instrument at low cost.Additional options available from Mad City LabsQuartz Crystal Tuning ForksAFMView software (included with SPM-M Kit)Other configurations of 3 axis closed loop nanopositioners*(e.g.Nano-HS3 Series,Nano-OP30(Z),Nano-H Series(XY))Vacuum compatible nanopositionersLED IlluminatorTungsten tip etching kit* All Mad City Labs nanopositioning systems include the Nano-Drivecontroller which is fully LabVIEW/C++/MATLAB compatible.AFM configurations typically achieve Z resolutions of 0.5nm (rms) and a scanning frequency of 1Hz. Higher resolutions and scan speeds can be achieved using different nanopositioner combinations. All Mad City Labs nanopositioning systems ahave low noise PicoQsensors and closed loop feedback control.Recommended additional itemsVibration isolation tableCoarse Z-axis approach (manual or automated)

Image Gallery

Seeing is Believing!

The images below were acquired using MadPLLwith Mad City Labs closed loop nanopositioning systems.

Calibration grid(100nm tall lines, 2μm apart)10μm x 10μmUnidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-HS3 3-axis nanopositioning system.Calibration grid(100nm tall pegs, spaced 2μm apart)10μm x 10μmUnidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-HS3 3-axis nanopositioning system.Fly eye100μm x 100μmBidirectional scanPLL mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)Human hair100μm x 100μmBidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)PMMA pattern, uncured10 μm x 10 μmBidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)Integrated circuit100 μm x 100 μmBidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)Calibration grid40 μm x 40 μmUnidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)Calibration grid(100nm tall, 10μm pitch)70 μm x 70 μmUnidirectional scanPLL mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)Etched structures80 μm x 80 μmBidirectional scanSelf oscillation mode, constant probe signalZ force feedback: frequencyData taken using MadPLLwith Nano-OP30 nanopositioning system (Z-axis), Nano-OP100 nanopositioning system (XY axes)

Technical Specifications

Lock-In AmplifierPhase Shifter0° to 360°Demodulation Bandwidth3 kHz

Phase Lock LoopAuto Range SelectionYESMeasurement Range± 500 HzMeasurement Resolution50 mHz

PreamplifierInput Gain (Attenuator)0x to 1x (16 bit internal DAC)Parasitic Capacitance Compensation (PCC)YESAutomatic PCCYES

Probe Oscillation LoopOperating Modesself oscillationPLL drivenlock-in/DDS drivenAmplitude Control Modesconstant excitationconstant signalAmplitude Setpoint16 bit internal DACAmplitude ControlYES, adjustable PI loop filterInput Voltage Range±10 V(peak)Input Voltage Gain2x to 40xFrequency Range10 kHz to 100 kHzOutput Voltage Range±10 V(peak)

PI Loop Filter (Z-Axis)Integration Time Constantdigitally controlledDigitally Set ParametersYESError Signal Inversion CapabilityYESSensor Signalsfrequencyphaseexcitation amplitudesignal amplitudeCommand Signal16 bit internal DACAutomatic Loop Filter SetupYes, after initializationLoop Output0 to 14V

GeneralSpectrum Analysisamplitude, phaseFeedback Monitor BNCfrequencyphaseexcitation amplitudesignal amplitudeProbe Signal Monitor (BNC)sinewave amplitude probe (diagnostic)Power Supply90 to 260 VAC (50/60 Hz)Controller Dimensions16.75" x 14" x 1.75" (1U)(42.55cm x 35.56cm x 4.45cm)PC ConnectionUSBOperating System32 bit: Windows 2000/XP Pro/Vista/764 bit: Windows XP Pro/Vista/7LabVIEW Software OS32 bit: Windows 2000/XP Pro/Vista/764bit: Windows XP Pro/Vista/7

Additional Information
MadPLLBrochure	Laser Focus World Article NANOPOSITIONING: Piezo-electric nano-positioners forge low-cost atomic force microscope	AFM Video Tutorial
MadPLLSensor Probe Board Drawing

Related Products

SPM-M Kit
Tuning Forks
Nano-HS Series
Nano-OP Series
Nano-H Series
Nano-SPMZ
Nano-SPM200
Nanopositioning Accessories
Nano-Drive

技术资料

MCL MadPLL®原子力显微镜控制器产品样册

MCL MadPLL®原子力显微镜控制器产品样册

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