Lars Mester
@LarsMester
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Nano-optics enthusiasts and friends welcome! Posting all about s-SNOM, nano-FTIR, AFM-IR & co. Application Engineer for attocube, but views are my own.
Munich
Joined September 2022
Adding to last week's #fridaySNOM post, it's time to show data today. Top: IR-SNOM image highlighting areas of high carrier density (~10^20 cm-3). Bottom: SNOM images showing strong signal dependence for differnet doping concentrations. Thread 🧵1/2.#Semiconductor #Nanoscopy
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RT @2Dsheffield: Fully funded PhD in "Advanced optical nano-imaging and nano-spectroscopy of novel semiconductors and quantum materials" in….
findaphd.com
PhD Project - Advanced optical nano-imaging and nano-spectroscopy of novel semiconductors and quantum materials C3.5-MPS-Tartakovskii at University of Sheffield, listed on FindAPhD.com
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Final preparations of our Soft Matter Nanospectroscopy Workshop with strong (nano-)focus on #Biology and #LifeScience going well!. Many thanks to all helping hands at AG @AndreasTittl and Attocube, and I look forward to the event next week!. Soft Matter Nanospectroscopy Workshop
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RT @AndreasTittl: Together with attocube systems AG, I'm organizing a workshop on "Soft Matter Nanospectroscopy" at Nanoinstitute Munich on….
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Interested in Life Science and Bio Applications at the nanoscale? 🔬 . Join us for the 1st Soft Matter Nanospectroscopy Workshop on 🗓️ Nov. 26-27, 2024 at 📍 Nano-Institute Munich (Germany)!. Info & Registration:
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RT @2Dsheffield: Submit your work and register for the 2nd International Workshop on 'Near-field Optical Imaging and Spectroscopy', Sheffie….
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RT @Huber_Group: Using ultrafast THz nanoscopy, we resolved the interplay between surface morphology, crystallographic phase, and vertical….
nature.com
Nature Photonics - Transient visible-pump terahertz-probe near-field microscopy enables the simultaneous retrieval of the local chemical composition, crystallographic structure, topography and...
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Here an overview of selected 2D material examples that can be studied using s-SNOM (details in future #fridaySNOM posts). This overview does not even include correlative neaSCOPE modes like KPFM, photocurrent, Raman, pump-probe, . Busy times at Neaspec but great things ahead!
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RT @2Dsheffield: Registration is open for the 2nd International Workshop on "Near-field Optical Imaging and Spectroscopy", 12 September 202….
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Twitter-exclusive (xxclusive?) #fridaySNOM post by the way, because i'm travelling - tell your friends! ;D.
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#fridaySNOM: Nano-photocurrent (nanoPC) results of last week's live demo!. Top: #AFM shows Au contacts and faint graphene in middle. Bottom: 10x10mu nanoPC image at 11mu wavelength (#infrared). Lots of defects exposed!. What are your favorite #photocurrent applications?
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Labtour today at #Attocube's 2D Conference: . Station 1: live near-field polariton mapping on #hBN and #graphene, live nano-#photocurrent mapping of 2D material interfaces. Station 2: live SNOM+Raman and live liquid cell SNOM. Huge display of progress in nanoscopy! #fridaySNOM
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Kleines Theater Haar is ready for our 2D Material Conference starting tomorrow!. Really excited for the lineup of speakers on #2Dmaterials, merging the communities of our #cryogenic and #nanoanalytics instruments. Anyone already here? #attocube2D . Info:
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Open PhD/MSc/BSc jobs in #Quantum #Nanophotonics @uni_muenster:. Contact Prof Iris Niehues ( & pls share with potential candidates!. Unique experiments on 2D materials with a new & customized IR-neaSCOPE+TERs await!. More 2D materials soon on #fridaySNOM
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s-SNOM / nano-FTIR are #subsurface sensitive (left), which enables the membrane-approach for Liquid-SNOM (right). Right column shows s-SNOM image and nano-FTIR spectral line scan identifying a #PMMA bead immersed in #liquid H2O. #fridaySNOM #superresolution #bio
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Please do reach out to learn more about this, and follow #fridaySNOM for more updates coming very soon. Liquid cell developed together with @norcadainc, flow control by @Fluigent. Earlier (2013) results in air: single TMV, ferritin and insulin fibrils, monolayer membrane. 4/4
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Earlier this year we successfully delivered the first Liquid Cell Kit to AG Heberle (picture AG Kozuch) at FU Berlin and demonstrated in-vivo nano-FTIR on site -> the zoom-in shows water absorption around 1600 cm-1. 🧵3/4.
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Nano-membrane approach pioneered by Keilmann et al (@CeNS_LMU): the AFM tip remains in air and the aqueous environment is “part of the sample”. Daring scientists can now potentially open new research fields in #LifeScience, #Biology and others! 🧵 2/4
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Long thread but big deal for Bio & Life Science near-field microscopy: s-SNOM and nano-FTIR are now possible in aqueous environments! . This enables super-resolution nanoscopy of living objects, but label-free and with chemical sensitivity!. Read 🧵1/4
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