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LabAgent - Catalog

Measurement Templates

Templates define what to measure. Located in src/lab_harness/planning/templates/. 46 templates: 45 across the 9 disciplines below plus one general-purpose custom sweep. The Instruments column lists the instrument roles referenced by each template's sweep axis and data channels.

Electrical Characterization (7)

Template Description Instruments
iv.yaml Sweep source current and measure voltage Source meter
rt.yaml Measure resistance as a function of temperature Temp controller + DMM
delta.yaml Sweep DC current and measure nanovoltage for ultra-low resistance samples AC/pulse current source + Nanovoltmeter
high_r.yaml Sweep voltage and measure picoamp current for high-resistance samples Electrometer
transfer.yaml Sweep gate voltage and measure drain current for transistor characterization Source meter (gate) + Source meter (drain)
output.yaml Sweep drain voltage at fixed gate voltage for transistor output characterization Source meter (drain) + Source meter (gate)
breakdown.yaml Ramp voltage until dielectric breakdown, monitoring leakage current Electrometer

Magnetic Measurements (condensed-matter) (8)

Template Description Instruments
hall.yaml Sweep magnetic field and measure Hall voltage for carrier density and mobility Magnet + DMM + DMM (secondary)
mr.yaml Sweep magnetic field and measure longitudinal resistance Magnet + DMM
ahe.yaml Sweep magnetic field and measure transverse Hall resistance Magnet + DMM + DMM (secondary)
sot.yaml Sweep field at each pulse current to measure current-induced switching Magnet + DMM + AC/pulse current source
fmr.yaml Sweep magnetic field and measure microwave absorption for FMR spectroscopy Magnet + Lock-in amplifier
hysteresis.yaml Sweep magnetic field and measure magnetization (M-H loop via VSM/SQUID) Magnet + Magnetometer (VSM/SQUID)
magnetostriction.yaml Magnetic field sweep, measure strain or length change Magnet + Strain gauge + Gaussmeter
nernst.yaml Magnetic field sweep, measure transverse thermoelectric voltage Magnet + Nanovoltmeter + Temp controller

Thermoelectric (2)

Template Description Instruments
seebeck.yaml Sweep temperature gradient and measure Seebeck voltage Temp controller + Nanovoltmeter + Temp controller (secondary)
thermal_conductivity.yaml Sweep heater power and measure temperature difference for thermal conductivity Source meter + Temp controller + Temp controller (secondary)

Superconductivity (2)

Template Description Instruments
tc.yaml Sweep temperature and measure resistance to find superconducting Tc Temp controller + DMM + Nanovoltmeter
jc.yaml Sweep current at fixed temperature and field to determine critical current Ic Source meter + Nanovoltmeter + Temp controller

Electrochemistry (4)

Template Description Instruments
cyclic_voltammetry.yaml Triangle wave voltage sweep, measure current for redox reaction analysis Potentiostat
eis.yaml Frequency sweep at fixed DC bias, measure complex impedance (Z real/imaginary) Impedance analyzer
chronoamperometry.yaml Step voltage and measure current vs time for diffusion studies Potentiostat
potentiometry.yaml Measure open circuit potential vs time for corrosion or battery studies Electrometer

Dielectric & Ferroelectric (4)

Template Description Instruments
cv.yaml Capacitance-Voltage characterization at multiple frequencies LCR meter
pe_loop.yaml Sweep electric field and measure polarization for ferroelectric P-E loop HV amplifier + Ferroelectric tester
pyroelectric.yaml Ramp temperature and measure pyroelectric current for Curie temperature determination Temp controller + Electrometer
capacitance_frequency.yaml Frequency sweep at fixed DC bias, measure capacitance for trap analysis LCR meter

Semiconductor & Optoelectronics (5)

Template Description Instruments
photo_iv.yaml Solar cell IV curve under illumination, extract power characteristics Source meter
dlts.yaml Temperature sweep, measure capacitance transients for deep trap characterization Temp controller + LCR meter
photocurrent.yaml Sweep illumination wavelength and measure photocurrent for spectral response Monochromator + Source meter
photoresponse.yaml Measure photocurrent vs time under pulsed illumination for response dynamics Source meter
tunneling.yaml Voltage sweep, measure differential conductance dI/dV for tunnel junction analysis Source meter + Lock-in amplifier

Sensors, Materials & Environmental (7)

Template Description Instruments
gas_sensor.yaml Gas concentration sweep, measure resistance change for sensor characterization Gas controller + DMM
humidity_response.yaml Humidity sweep, measure resistance or capacitance change of sensor Humidity chamber + DMM + LCR meter
impedance_biosensor.yaml Impedance vs analyte concentration for biosensor calibration curves Impedance analyzer
cell_counting.yaml Voltage pulse detection and event counting for particle/cell sizing Source meter
ph_calibration.yaml pH buffer sweep, measure electrode voltage for calibration curve pH meter + Electrometer
strain_gauge.yaml Strain sweep, measure resistance change for piezoresistive characterization Strain controller + DMM
fatigue.yaml Cyclic stress loading, measure resistance degradation over cycles Strain controller + DMM + Load cell

Quantum Design PPMS/MPMS (6)

Template Description Instruments
ppms_rt.yaml Four-probe resistance measurement as a function of temperature using Quantum Design PPMS PPMS (MultiPyVu)
ppms_mr.yaml Field-dependent resistance measurement at fixed temperature using Quantum Design PPMS PPMS (MultiPyVu)
ppms_hall.yaml Hall resistance vs field for carrier density and mobility using PPMS PPMS (MultiPyVu)
ppms_hc.yaml Specific heat measurement as a function of temperature using PPMS relaxation method PPMS (MultiPyVu)
mpms_mh.yaml DC magnetization measurement as a function of applied field using Quantum Design MPMS/SQUID MPMS (MultiPyVu)
mpms_mt.yaml Zero-field-cooled and field-cooled magnetization vs temperature using MPMS MPMS (MultiPyVu)

General Purpose (1)

Template Description Instruments
custom_sweep.yaml Generic X-Y sweep measurement with user-defined axes and channels Source meter + DMM (defaults, user-configurable)

Instrument Reference Procedures

Command sequences (SCPI, ASCII-line, or vendor-API) for common instruments. Located in src/lab_harness/reference/instrument_procedures.py. Currently 33 procedures spanning electrical, signals/RF, optics, electrochemistry, biology/analytical, gas/flow, and cryogenic instruments.

Electrical / source-measure / DMM

Procedure Instruments Use Case
IV_K2400 Keithley 2400 Standard IV curve
DELTA_K6221 K6221 + K2182A Ultra-low resistance
HIGH_R_K6517B Keithley 6517B High impedance materials
NANOVOLT_K2182A Keithley 2182A Low-noise voltage
DMM_K2000 Keithley 2000 General voltage/resistance
DMM_A34401 Agilent 34401A / Keysight 34461A General purpose DMM

Signals / RF / waveform

Procedure Instruments Use Case
SCOPE_CAPTURE_TEK Tektronix TDS/DPO/MSO Waveform capture
SCOPE_CAPTURE_KEYSIGHT Keysight DSOX/MSOX Waveform capture
FGEN_KEYSIGHT Keysight 33500B/33622A Arbitrary waveform output
PSU_KEYSIGHT_E36300 Keysight E36313A Programmable DC supply
LOCKIN_SR830 SRS SR830 AC / small-signal detection
LOCKIN_SR860 SRS SR860/SR865A AC / small-signal detection (SCPI)
LOCKIN_ZURICH_MFLI Zurich Instruments MFLI High-end lock-in via zhinst-toolkit

Optics / photonics / spectroscopy

Procedure Instruments Use Case
OPTICAL_POWER_PM100D Thorlabs PM100D / PM400 Optical power at wavelength
UV_VIS_OCEAN_INSIGHT Ocean Insight USB2000/QEPro UV-Vis absorbance spectrum

Electrochemistry

Procedure Instruments Use Case
CV_E4980A Keysight E4980A Capacitance characterization
CV_BIOLOGIC BioLogic SP-200/VSP/VMP3 Cyclic voltammetry via easy-biologic
CV_GAMRY Gamry Reference 600+/Interface 1010B CV via COM/ActiveX
CV_CHI CH Instruments CHI760E/CHI660E CV via hardpotato macro driver

Gas / flow / pressure

Procedure Instruments Use Case
GAS_FLOW_ALICAT Alicat MC-series MFC Gas flow setpoint

Analytical / biology

Procedure Instruments Use Case
WEIGH_METTLER Mettler Toledo XS/XP Stable mass readout (MT-SICS)
WEIGH_OHAUS Ohaus Adventurer Mass readout over RS-232
PH_ORION Thermo Orion Star A221 pH / ISE / mV readout

Temperature / cryogenic

Procedure Instruments Use Case
RT_LS350 Lakeshore 350 Temperature-dependent measurements
TEMP_OXFORD_ITC Oxford Mercury iTC Cryostat temperature control

DAQ

Procedure Instruments Use Case
DAQ_NI_AO NI USB-6351/6001/6009 Analog voltage output
DAQ_NI_AI NI USB-6351/6001/6009 Analog voltage input

Condensed-matter specialty (Quantum Design)

Procedure Instruments Use Case
PPMS_RT QD PPMS (MultiPyVu) R-T measurement
PPMS_MR QD PPMS (MultiPyVu) Magnetoresistance
PPMS_HALL QD PPMS (MultiPyVu) Hall effect
PPMS_HC QD PPMS (MultiPyVu) Heat capacity
MPMS_MH QD MPMS (MultiPyVu) M-H loop (SQUID)
MPMS_MT QD MPMS (MultiPyVu) M-T ZFC/FC

Can't find your instrument? Call the manual_lookup MCP tool (or labharness's AI chat) with the make and model — it will return the manufacturer's programming manual URL plus any open-source Python driver it knows about, before writing new command sequences.

How to Contribute

Add a New Measurement Template

  1. Create a YAML file in src/lab_harness/planning/templates/
  2. Follow the format of existing templates (see iv.yaml for reference)
  3. Add the measurement type to MeasurementType enum in src/lab_harness/models/measurement.py
  4. Add required roles to MEASUREMENT_ROLES in src/lab_harness/discovery/classifier.py
  5. Submit a pull request

Add an Instrument Driver Reference

  1. Add SCPI sequences to src/lab_harness/reference/instrument_procedures.py
  2. Include init, measure, and shutdown sequences
  3. Document default parameters
  4. Submit a pull request

Add an Analysis Template

  1. Create a Python script in src/lab_harness/analysis/templates/
  2. Use {{DATA_PATH}} and {{OUTPUT_DIR}} placeholders
  3. Save figures as PNG (300 dpi) and PDF
  4. Submit a pull request