Bruker
Nanoscale Infrared Spectroscopy

NanoIR Spectrometers

Photothermal IR spectroscopy from the nanoscale to the sub-micron and macro scales

NanoIR Spectrometers

Utilizing Bruker’s exclusive photothermal AFM-IR technology, our nanoscale infrared (nanoIR) spectrometers offer the world’s easiest to use and most productive nanoscale chemical analysis capabilities. These innovative solutions provide nanoscale chemical identification and material characterization across a diverse range of applications in materials science and life science research, including polymers, 2D materials, and micro-electronics. Thanks to photothermal AFM-IR’s easy-to-interpret data and well-understood physics, nanoIR spectrometers have been adopted by leading scientists at major research universities, national laboratories, and leading chemical/materials companies worldwide.

FAQs

Frequently Asked Questions About Bruker's NanoIR Technology

What is photothermal AFM-IR?

Photothermal AFM-IR — sometimes called just AFM-IR, nano-IR, photothermal induced resonance (PTIR), infrared nanospectroscopy, or atomic force microscope-based infrared spectroscopy — is a nanoscale chemical and material characterization technique. It is performed using a nanoscale IR spectrometer, which works by applying the tip of an AFM probe to a sample surface to detect thermal expansion caused by the absorption of infrared radiation. In this way, photothermal AFM-IR provides both the spatial resolution of AFM and the chemical analysis and compositional imaging capabilities of infrared spectroscopy.

Can the spectra from Bruker’s photothermal AFM-IR systems be interpreted in the same way as FTIR spectra?

Yes. Bruker’s photothermal AFM-IR technology produces spectra that are directly comparable to FTIR spectra, as demonstrated in published documentation and peer-reviewed articles. AFM-IR spectra can be searched directly against FTIR spectral databases. If FTIR-like spectral analysis is critical for your application, our experts can provide evidence showing spectral correlation.

How does photothermal AFM-IR compare with Raman-AFM or s-SNOM?

Photothermal AFM-IR provides direct absorption-based spectra that closely match FTIR results and are easier to interpret than Raman-AFM or s-SNOM. Further, Photothermal AFM-IR signals are amplified by the resonant enhancement of the cantilever providing the best signal-to-noise of those techniques. Bruker offers s-SNOM as a separate option for advanced near-field studies.

What spatial resolution and sensitivity can I expect from Bruker’s photothermal AFM-IR systems?

Bruker nanoIR systems routinely achieve chemical imaging with spatial resolution below 10 nm and can detect single molecular layers. Actual performance depends on your sample and selected measurement mode.

Can photothermal AFM-IR systems identify nanoplastics or other sub-micron particles?

Yes, photothermal AFM-IR can chemically map and identify particles smaller than one micron, including nanoplastics and environmental contaminants. Direct correlation to FTIR provides ready interpretation in particles as small as 10 nm. 

What utilities and site requirements should I consider when planning for installation of a photothermal AFM-IR system?

Bruker’s photothermal AFM-IR systems typically require a single socket of standard electrical power,and CDA. Specific requirements may vary by model, so request a site preparation guide from your Bruker representative.

What laser options and spectral coverage are available on Bruker’s photothermal AFM-IR systems?

Bruker photothermal AFM-IR systems primarily use quantum cascade lasers (QCLs) that deliver stable, reliable performance and broad coverage across the mid-infrared fingerprint region as well as optical parametric oscillators (OPOs) for the C-H, O-H, N-H stretching region. Multiple QCL chips can be combined to access all key spectral windows required for routine and advanced research, and additional sources are available for specialized applications. Bruker’s application experts can help you select the optimal laser configuration to match your measurement needs and ensure sufficient spectral resolution for both standard and demanding experiments.

How long do typical measurements take for spectra, chemical mapping, and automated recipes?

Measurement times vary by application, but point spectra can be acquired in seconds, chemical maps in minutes, and automated recipes can be tailored for high-throughput workflows.

What is the recommended maintenance schedule for Bruker nanoIR systems?

Routine maintenance includes probe replacement, laser alignment checks, and calibration with reference samples. Bruker provides detailed maintenance protocols and support plans.

Resources

NanoIR Webinar Series

Our webinars cover best practices, introduce new products, provide quick solutions to tricky questions, and offer ideas for new applications, modes, or techniques.

Service and Support

How Can We Help?

Bruker partners with our customers to solve real-world application issues. We develop next-generation technologies and help customers select the right system and accessories. This partnership continues through training and extended service, long after the tools are sold.

Our highly trained team of support engineers, application scientists and subject-matter experts are wholly dedicated to maximizing your productivity with system service and upgrades, as well as application support and training.

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