@article{14802,
  abstract     = {Frequency-stable lasers form the back bone of precision measurements in science and technology. Such lasers typically attain their stability through frequency locking to reference cavities. State-of-the-art locking performances to date had been achieved using frequency modulation based methods, complemented with active drift cancellation systems. We demonstrate an all passive, modulation-free laser-cavity locking technique (squash locking) that utilizes changes in spatial beam ellipticity for error signal generation, and a coherent polarization post-selection for noise resilience. By comparing two identically built proof-of-principle systems, we show a frequency locking instability of 5×10<jats:sup>−7</jats:sup> relative to the cavity linewidth at 10 s averaging. The results surpass the demonstrated performances of methods engineered over the last five decades, potentially enabling an advancement in the precision control of lasers, while creating avenues for bridging the performance gaps between industrial grade lasers with scientific ones due to the afforded simplicity and scalability.},
  author       = {Diorico, Fritz R and Zhutov, Artem and Hosten, Onur},
  issn         = {2334-2536},
  journal      = {Optica},
  keywords     = {Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials},
  number       = {1},
  pages        = {26--31},
  publisher    = {Optica Publishing Group},
  title        = {{Laser-cavity locking utilizing beam ellipticity: accessing the 10<sup>−7</sup> instability scale relative to cavity linewidth}},
  doi          = {10.1364/optica.507451},
  volume       = {11},
  year         = {2024},
}

@article{13353,
  abstract     = {We show that the optical properties of indigo carmine can be modulated by encapsulation within a coordination cage. Depending on the host/guest molar ratio, the cage can predominantly encapsulate either one or two dye molecules. The 1 : 1 complex is fluorescent, unique for an indigo dye in an aqueous solution. We have also found that binding two dye molecules stabilizes a previously unknown conformation of the cage.},
  author       = {Yanshyna, Oksana and Avram, Liat and Shimon, Linda J. W. and Klajn, Rafal},
  issn         = {1364-548X},
  journal      = {Chemical Communications},
  keywords     = {Materials Chemistry, Metals and Alloys, Surfaces, Coatings and Films, General Chemistry, Ceramics and Composites, Electronic, Optical and Magnetic Materials, Catalysis},
  number       = {21},
  pages        = {3461--3464},
  publisher    = {Royal Society of Chemistry},
  title        = {{Coexistence of 1:1 and 2:1 inclusion complexes of indigo carmine}},
  doi          = {10.1039/d1cc07081a},
  volume       = {58},
  year         = {2022},
}

@article{13991,
  abstract     = {The prediction and realization of topological insulators have sparked great interest in experimental approaches to the classification of materials1,2,3. The phase transition between non-trivial and trivial topological states is important, not only for basic materials science but also for next-generation technology, such as dissipation-free electronics4. It is therefore crucial to develop advanced probes that are suitable for a wide range of samples and environments. Here we demonstrate that circularly polarized laser-field-driven high-harmonic generation is distinctly sensitive to the non-trivial and trivial topological phases in the prototypical three-dimensional topological insulator bismuth selenide5. The phase transition is chemically initiated by reducing the spin–orbit interaction strength through the substitution of bismuth with indium atoms6,7. We find strikingly different high-harmonic responses of trivial and non-trivial topological surface states that manifest themselves as a conversion efficiency and elliptical dichroism that depend both on the driving laser ellipticity and the crystal orientation. The origins of the anomalous high-harmonic response are corroborated by calculations using the semiconductor optical Bloch equations with pairs of surface and bulk bands. As a purely optical approach, this method offers sensitivity to the electronic structure of the material, including its nonlinear response, and is compatible with a wide range of samples and sample environments.},
  author       = {Heide, Christian and Kobayashi, Yuki and Baykusheva, Denitsa Rangelova and Jain, Deepti and Sobota, Jonathan A. and Hashimoto, Makoto and Kirchmann, Patrick S. and Oh, Seongshik and Heinz, Tony F. and Reis, David A. and Ghimire, Shambhu},
  issn         = {1749-4893},
  journal      = {Nature Photonics},
  keywords     = {Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials},
  number       = {9},
  pages        = {620--624},
  publisher    = {Springer Nature},
  title        = {{Probing topological phase transitions using high-harmonic generation}},
  doi          = {10.1038/s41566-022-01050-7},
  volume       = {16},
  year         = {2022},
}

@article{12213,
  abstract     = {Motivated by properties-controlling potential of the strain, we investigate strain dependence of structure, electronic, and magnetic properties of Sr2IrO4 using complementary theoretical tools: ab-initio calculations, analytical approaches (rigid octahedra picture, Slater-Koster integrals), and extended t−J model. We find that strain affects both Ir-Ir distance and Ir-O-Ir angle, and the rigid octahedra picture is not relevant. Second, we find fundamentally different behavior for compressive and tensile strain. One remarkable feature is the formation of two subsets of bond- and orbital-dependent carriers, a compass-like model, under compression. This originates from the strain-induced renormalization of the Ir-O-Ir superexchange and O on-site energy. We also show that under compressive (tensile) strain, Fermi surface becomes highly dispersive (relatively flat). Already at a tensile strain of 1.5%, we observe spectral weight redistribution, with the low-energy band acquiring almost purely singlet character. These results can be directly compared with future experiments.},
  author       = {Paerschke, Ekaterina and Chen, Wei-Chih and Ray, Rajyavardhan and Chen, Cheng-Chien},
  issn         = {2397-4648},
  journal      = {npj Quantum Materials},
  keywords     = {Condensed Matter Physics, Electronic, Optical and Magnetic Materials},
  publisher    = {Springer Nature},
  title        = {{Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain}},
  doi          = {10.1038/s41535-022-00496-w},
  volume       = {7},
  year         = {2022},
}

@article{9447,
  abstract     = {Lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) based water-in-salt electrolytes (WiSEs) has recently emerged as a new promising class of electrolytes, primarily owing to their wide electrochemical stability windows (~3–4 V), that by far exceed the thermodynamic stability window of water (1.23 V). Upon increasing the salt concentration towards superconcentration the onset of the oxygen evolution reaction (OER) shifts more significantly than the hydrogen evolution reaction (HER) does. The OER shift has been explained by the accumulation of hydrophobic anions blocking water access to the electrode surface, hence by double layer theory. Here we demonstrate that the processes during oxidation are much more complex, involving OER, carbon and salt decomposition by OER intermediates, and salt precipitation upon local oversaturation. The positive shift in the onset potential of oxidation currents was elucidated by combining several advanced analysis techniques: rotating ring-disk electrode voltammetry, online electrochemical mass spectrometry, and X-ray photoelectron spectroscopy, using both dilute and superconcentrated electrolytes. The results demonstrate the importance of reactive OER intermediates and surface films for electrolyte and electrode stability and motivate further studies of the nature of the electrode.},
  author       = {Maffre, Marion and Bouchal, Roza and Freunberger, Stefan Alexander and Lindahl, Niklas and Johansson, Patrik and Favier, Frédéric and Fontaine, Olivier and Bélanger, Daniel},
  issn         = {1945-7111},
  journal      = {Journal of The Electrochemical Society},
  keywords     = {Renewable Energy, Sustainability and the Environment, Electrochemistry, Materials Chemistry, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Condensed Matter Physics},
  number       = {5},
  publisher    = {IOP Publishing},
  title        = {{Investigation of electrochemical and chemical processes occurring at positive potentials in “Water-in-Salt” electrolytes}},
  doi          = {10.1149/1945-7111/ac0300},
  volume       = {168},
  year         = {2021},
}

@article{9069,
  abstract     = {In the quest for alternate and efficient electrode materials, ternary metal electrocatalysts (TMEs), part of the perovskite family, were synthesized and tested for methanol electro-oxidation in alkaline media. La0.5Ca0.5MO3 (M = Ni, Co, or Mn) was synthesized via sol-gel method. X-ray diffraction analysis revealed that the perovskite crystal structure possesses characteristic sharp and crystalline peaks for all synthesized ternary electrocatalysts. The average particle size calculated using Debye–Scherrer equation was in the order of La0.5Ca0.5NiO3 (LCNO) > La0.5Ca0.5CoO3 (LCCO)> La0.5Ca0.5MnO3 (LCMO). The elemental composition of as prepared sample, LCCO was investigated via x-ray fluorescence spectroscopy. The qualitative and quantitative analysis revealed the presence of La, Ca and Co in parent crystal structure with percentage compositions of 9.0, 3.12 and 87.82% respectively. The particle size distribution was homogenous, as determined by scanning electron and transmission electron microscopes. The electrocatalytic activity of the synthesized ternary electrocatalysts was studied electrochemically by cyclic voltammetry. The calculated diffusion coefficient values showed that electrode surface of LCNO and LCCO have limited efficiency for diffusion related phenomenon. The heterogeneous rate constants inferred better electrode kinetics of LCCO and LCNO which exhibited good electrocatalytic behavior; sharp anodic peaks were observed in the potential range of +0.3 to 0.6 V and +0.6 to 0.8 V, respectively. Methanol electro-oxidation was found minimal in case of LCMO sample. We have observed that Co substitution at B-site of perovskite electrode materials attains better electrochemical properties, thus in relation with reported literature.},
  author       = {Hussain, Tayyaba and Nauman, Muhammad and Sabahat, Sana and Arif, Saira},
  issn         = {2053-1591},
  journal      = {Materials Research Express},
  keywords     = {Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Polymers and Plastics, Metals and Alloys, Biomaterials},
  number       = {12},
  publisher    = {IOP Publishing},
  title        = {{Synthesis of ternary electrocatalysts for exploration of methanol electro-oxidation in alkaline media}},
  doi          = {10.1088/2053-1591/ab6886},
  volume       = {6},
  year         = {2020},
}

@article{8455,
  abstract     = {Solid-state NMR spectroscopy allows the characterization of the structure, interactions and dynamics of insoluble and/or very large proteins. Sensitivity and resolution are often major challenges for obtaining atomic-resolution information, in particular for very large protein complexes. Here we show that the use of deuterated, specifically CH3-labelled proteins result in significant sensitivity gains compared to previously employed CHD2 labelling, while line widths increase only marginally. We apply this labelling strategy to a 468 kDa-large dodecameric aminopeptidase, TET2, and the 1.6 MDa-large 50S ribosome subunit of Thermus thermophilus.},
  author       = {Kurauskas, Vilius and Crublet, Elodie and Macek, Pavel and Kerfah, Rime and Gauto, Diego F. and Boisbouvier, Jérôme and Schanda, Paul},
  issn         = {1359-7345},
  journal      = {Chemical Communications},
  keywords     = {Materials Chemistry, Electronic, Optical and Magnetic Materials, General Chemistry, Surfaces, Coatings and Films, Metals and Alloys, Ceramics and Composites, Catalysis},
  number       = {61},
  pages        = {9558--9561},
  publisher    = {Royal Society of Chemistry},
  title        = {{Sensitive proton-detected solid-state NMR spectroscopy of large proteins with selective CH3labelling: Application to the 50S ribosome subunit}},
  doi          = {10.1039/c6cc04484k},
  volume       = {52},
  year         = {2016},
}

@article{13387,
  abstract     = {Come on in, the water's fine! Non-photoresponsive nanoparticles can be reversibly assembled using light by placing them in an aqueous solution of a photo­acid. Upon exposure to visible light, the photoacid reduces the pH of the solution, which induces attractive interactions between the nanoparticles. In the dark, the resulting nanoparticle aggregates spontaneously disassemble. The process can be repeated many times.},
  author       = {Samanta, Dipak and Klajn, Rafal},
  issn         = {2195-1071},
  journal      = {Advanced Optical Materials},
  keywords     = {Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials},
  number       = {9},
  pages        = {1373--1377},
  publisher    = {Wiley},
  title        = {{Aqueous light-controlled self-assembly of nanoparticles}},
  doi          = {10.1002/adom.201600364},
  volume       = {4},
  year         = {2016},
}

@article{14012,
  abstract     = {Monochromatization of high-harmonic sources has opened fascinating perspectives regarding time-resolved photoemission from all phases of matter. Such studies have invariably involved the use of spectral filters or spectrally dispersive optical components that are inherently lossy and technically complex. Here we present a new technique for the spectral selection of near-threshold harmonics and their spatial separation from the driving beams without any optical elements. We discover the existence of a narrow phase-matching gate resulting from the combination of the non-collinear generation geometry in an extended medium, atomic resonances and absorption. Our technique offers a filter contrast of up to 104 for the selected harmonics against the adjacent ones and offers multiple temporally synchronized beamlets in a single unified scheme. We demonstrate the selective generation of 133, 80 or 56 nm femtosecond pulses from a 400-nm driver, which is specific to the target gas. These results open new pathways towards phase-sensitive multi-pulse spectroscopy in the vacuum- and extreme-ultraviolet, and frequency-selective output coupling from enhancement cavities.},
  author       = {Rajeev, Rajendran and Hellwagner, Johannes and Schumacher, Anne and Jordan, Inga and Huppert, Martin and Tehlar, Andres and Niraghatam, Bhargava Ram and Baykusheva, Denitsa Rangelova and Lin, Nan and von Conta, Aaron and Wörner, Hans Jakob},
  issn         = {2047-7538},
  journal      = {Light: Science & Applications},
  keywords     = {Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials},
  number       = {11},
  pages        = {e16170--e16170},
  publisher    = {Springer Nature},
  title        = {{In situ frequency gating and beam splitting of vacuum- and extreme-ultraviolet pulses}},
  doi          = {10.1038/lsa.2016.170},
  volume       = {5},
  year         = {2016},
}

@article{13395,
  abstract     = {Metallic nanoparticles co-functionalised with monolayers of UV- and CO2-sensitive ligands were prepared and shown to respond to these two types of stimuli reversibly and in an orthogonal fashion. The composition of the coating could be tailored to yield nanoparticles capable of aggregating exclusively when both UV and CO2 were applied at the same time, analogously to the behaviour of an AND logic gate.},
  author       = {Lee, Ji-Woong and Klajn, Rafal},
  issn         = {1364-548X},
  journal      = {Chemical Communications},
  keywords     = {Materials Chemistry, Metals and Alloys, Surfaces, Coatings and Films, General Chemistry, Ceramics and Composites, Electronic, Optical and Magnetic Materials, Catalysis},
  number       = {11},
  pages        = {2036--2039},
  publisher    = {Royal Society of Chemistry},
  title        = {{Dual-responsive nanoparticles that aggregate under the simultaneous action of light and CO2}},
  doi          = {10.1039/c4cc08541h},
  volume       = {51},
  year         = {2015},
}

@article{13423,
  abstract     = {Supraspheres (SS) composed of hundreds to thousands of metal nanoparticles (NPs) and crosslinked by dithiol linkers are assembled into larger structures, which are subsequently converted into nanoporous metals (NMs). Conversion is achieved by heating which removes organic molecules stabilizing the NPs and allows for NP fusion. Heating of SS solutions leads to NMs of overall macroscopic dimensions; localized radiation using collimated electron beam is used to prepare metallized surface micropatterns. Depending on the composition of supraspherical precursors, nanoporous materials composed of up to three metals can be obtained. Strategies for controlling pore size and nanoscale surface roughness of these materials are discussed.},
  author       = {Klajn, Rafal and Gray, Timothy P. and Wesson, Paul J. and Myers, Benjamin D. and Dravid, Vinayak P. and Smoukov, Stoyan K. and Grzybowski, Bartosz A.},
  issn         = {1616-3028},
  journal      = {Advanced Functional Materials},
  keywords     = {Electrochemistry, Condensed Matter Physics, Biomaterials, Electronic, Optical and Magnetic Materials},
  number       = {18},
  pages        = {2763--2769},
  publisher    = {Wiley},
  title        = {{Bulk synthesis and surface patterning of nanoporous metals and alloys from supraspherical nanoparticle aggregates}},
  doi          = {10.1002/adfm.200800293},
  volume       = {18},
  year         = {2008},
}