Optical spectroscopy articles within Nature

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  • Article |

    Through inelastic light scattering chiral spin-2 long-wavelength magnetorotons are observed, revealing chiral graviton modes in fractional quantum Hall states and aiding in understanding the quantum metric impacts in topological correlated systems.

    • Jiehui Liang
    • , Ziyu Liu
    •  & Aron Pinczuk

  • Article
    | Open Access

    We demonstrate a photon-counting approach that extends the unique advantages of spectroscopy with interfering frequency combs into regions where nonlinear frequency conversion tends to be very inefficient, providing a step towards precision broadband spectroscopy at short wavelengths and extreme-ultraviolet dual-comb spectroscopy.

    • Bingxin Xu
    • , Zaijun Chen
    •  & Nathalie Picqué

  • Article
    | Open Access

    Raman and fluorescence spectra, consistent with several species of aromatic organic molecules, are reported in the Crater Floor sequences of Jezero crater, Mars, suggesting multiple mechanisms of organic synthesis, transport, or preservation.

    • Sunanda Sharma
    • , Ryan D. Roppel
    •  & Anastasia Yanchilina

  • Article |

    The authors report on the radiative decay of a low-energy isomer in thorium-229 (229mTh), which has consequences for the design of a future nuclear clock and eases the search for direct laser excitation of the atomic nucleus.

    • Sandro Kraemer
    • , Janni Moens
    •  & Ulrich Wahl

  • Article
    | Open Access

    Shear phenomena in the infrared dielectric response of a monoclinic crystal are shown to unveil a new polariton class termed hyperbolic shear polariton that can emerge in any low-symmetry monoclinic or triclinic system.

    • Nikolai C. Passler
    • , Xiang Ni
    •  & Alexander Paarmann

  • Article |

    Multiple ultracold ensembles of strontium atoms are trapped in the same optical lattice, realizing a multiplexed optical clock where precision measurements can benefit from having all atoms share the same trapping light and clock laser.

    • Xin Zheng
    • , Jonathan Dolde
    •  & Shimon Kolkowitz

  • Article |

    Experimental measurements of vibrational sum-frequency generation spectra indicate that the dielectric response of water near an electrode may be strongly asymmetric, with different responses to positive and negative electrode charge.

    • Angelo Montenegro
    • , Chayan Dutta
    •  & Alexander V. Benderskii

  • Article |

    An einsteinium coordination complex is synthesized and spectroscopically characterized using less than 200 nanograms of einsteinium, enabling examination of its structure and measurement of an einsteinium bond distance.

    • Korey P. Carter
    • , Katherine M. Shield
    •  & Rebecca J. Abergel

  • Article |

    Spectral analysis of the VIRTIS dataset shows two opposite seasonal colour cycles in the coma and on the surface of comet 67P/Churyumov–Gerasimenko, indicating an orbital water-ice cycle.

    • Gianrico Filacchione
    • , Fabrizio Capaccioni
    •  & Stefano Mottola

  • Article |

    A vibrational spectroscopy technique that measures the electric field emitted from organic molecules following infrared illumination allows their molecular fingerprints to be separated from the excitation background, even in complex biological samples.

    • Ioachim Pupeza
    • , Marinus Huber
    •  & Ferenc Krausz

  • Letter |

    Recombination of excitons to produce molecular light emission is made more efficient by controlling electron spin within the molecule to produce spin-triplet excitons only, without the usual accompanying spin-singlet excitons.

    • Kensuke Kimura
    • , Kuniyuki Miwa
    •  & Yousoo Kim

  • Article |

    Single-molecule FRET imaging provides insights into the allosteric link between the ligand-binding and G-protein nucleotide-binding pockets of the β2 adrenergic receptor (β2AR) and improved understanding of the G-protein activation mechanism.

    • G. Glenn Gregorio
    • , Matthieu Masureel
    •  & Scott C. Blanchard

  • Letter |

    Stimulated Raman scattering under electronic pre-resonance conditions, combined with a new palette of probes, enables super-multiplex imaging of molecular targets in living cells with very high vibrational selectivity and sensitivity.

    • Lu Wei
    • , Zhixing Chen
    •  & Wei Min

  • Letter |

    Iron-containing zeolites have an exceptional ability to convert methane into methanol, but their active site have been hard to study; now, magnetic circular dichroism has been used to explore the reactive species, providing a technique that should be generally applicable, and revealing the value of constraining active sites within a lattice to improve catalyst functionality.

    • Benjamin E. R. Snyder
    • , Pieter Vanelderen
    •  & Edward I. Solomon

  • Letter |

    Combining cavity-enhanced direct frequency comb spectroscopy with buffer gas cooling enables rapid collection of well-resolved infrared spectra for molecules such as nitromethane, naphthalene and adamantane, confirming the value of the combined approach for studying much larger and more complex molecules than have been probed so far.

    • Ben Spaun
    • , P. Bryan Changala
    •  & Jun Ye

  • Letter |

    Luminescence induced by highly localized excitations that are produced by electrons tunnelling from the tip of a scanning tunnelling microscope is used to map the spatial distribution of the excitonic coupling in well-defined arrangements of a few zinc-phthalocyanine molecules and the dependence of this spatial distribution on the relative orientation and phase of the transition dipoles of the individual molecules.

    • Yang Zhang
    • , Yang Luo
    •  & J. G. Hou

  • Letter |

    An efficient, cost effective microspectrometer that consists of a two-dimensional absorptive filter array of 195 different colloidal quantum dots is presented, and its performance demonstrated by measuring shifts in spectral peak positions as small as one nanometre.

    • Jie Bao
    •  & Moungi G. Bawendi

  • Letter |

    Mapping the frontier-orbital interactions with atom specificity using X-ray laser-based femtosecond-resolution spectroscopy reveals that spin crossover and ligation determine the sub-picosecond excited-state dynamics of a transition-metal complex in solution.

    • Ph. Wernet
    • , K. Kunnus
    •  & A. Föhlisch

  • Letter |

    The structure of the 39S large mitoribosome subunit is solved by cryo-electron microscopy at an impressive 3.4 Å resolution, revealing the location of 50 ribosomal proteins, the peptidyl transferase centre, the tRNAs within this active site, and the nascent peptide chain within the exit tunnel.

    • Basil J. Greber
    • , Daniel Boehringer
    •  & Nenad Ban

  • Letter |

    By passing light through a chiral sample — here vapours and solutions — in a specially designed ring cavity, the resulting chiral signals can be isolated from the achiral backgrounds and enhanced by a factor of more than 1,000, making them detectable in situations where conventional means of measurement fail.

    • Dimitris Sofikitis
    • , Lykourgos Bougas
    •  & T. Peter Rakitzis

  • Letter |

    Femtosecond resolution X-ray fluorescence spectroscopy is shown to track the charge and spin dynamics triggered when an iron coordination complex is excited by light, and establishes the critical role of intermediate spin states in the de-excitation process.

    • Wenkai Zhang
    • , Roberto Alonso-Mori
    •  & Kelly J. Gaffney

  • Article |

    Cryo-electron microscopy combined with chemical crosslinking and mass spectrometry is used to determine the structure of the large subunit of the mammalian mitoribosome; this structure provides detailed structural insight, particularly of the molecular architecture of the polypeptide exit site, which has been structurally remodelled during evolution, presumably to help facilitate the membrane insertion of the highly hydrophobic proteins encoded by the mitochondrial genome.

    • Basil J. Greber
    • , Daniel Boehringer
    •  & Nenad Ban

  • Letter |

    A technique of NMR thermometry that relies on the inverse relationship between NMR linewidths and temperature can be used to map non-invasively the gas temperatures inside catalytic reactors, offering unprecedented capabilities for testing the approximations used in reactor modelling.

    • Nanette N. Jarenwattananon
    • , Stefan Glöggler
    •  & Louis-S. Bouchard

  • Outlook |

    Richard R. Ernst pioneered one- and two-dimensional nuclear magnetic resonance (NMR), and talks to Stephanie Harris about why dimensions are important in life as well as in science.

  • Letter |

    A new multiplex technique of coherent anti-Stokes Raman spectro-imaging with two laser frequency combs is shown to record molecular spectra of broad bandwidth on a microsecond scale.

    • Takuro Ideguchi
    • , Simon Holzner
    •  & Theodor W. Hänsch

  • Letter |

    Resonant inelastic X-ray scattering requires very high photon densities to detect the relatively weak signals of interest, but here it is demonstrated that inducing stimulated X-ray emission from crystalline silicon can increase the signal level by several orders of magnitude and reduces sample damage.

    • M. Beye
    • , S. Schreck
    •  & A. Föhlisch

  • Letter |

    Synchrotron-based nuclear resonance vibrational spectroscopy is used to characterize the reactive Fe(iv)=O intermediate of the halogenase SyrB2; the substrate directs the orientation of this intermediate, presenting specific frontier molecular orbitals that can activate the selective halogenation.

    • Shaun D. Wong
    • , Martin Srnec
    •  & Edward I. Solomon

  • Letter |

    Microwave spectroscopy is used to map the sign of an electric dipole Rabi frequency — which depends directly on the chirality of the molecule — onto the phase of emitted microwave radiation, thereby determining the chirality of cold gas-phase molecules.

    • David Patterson
    • , Melanie Schnell
    •  & John M. Doyle

  • Letter |

    During normal ageing a low rate of division of pre-existing cardiomyocytes, rather than progenitor cells, is responsible for cardiomyocyte genesis; this process is increased fourfold during myocardial infarction.

    • Samuel E. Senyo
    • , Matthew L. Steinhauser
    •  & Richard T. Lee

  • Letter |

    A free-electron laser is used to power a pulsed electron paramagnetic resonance spectrometer at 240 GHz, demonstrating a range of experimental possibilities such as the manipulation of spin-1/2 systems with 6-ns pulses and the measurement of ultrashort decoherence times.

    • S. Takahashi
    • , L.-C. Brunel
    •  & M. S. Sherwin

  • Letter |

    By coupling a high-power, high-repetition-rate near-infrared frequency comb to a femtosecond optical cavity, a frequency comb operating in the extreme-ultraviolet spectral range has been produced, by high harmonic generation, and provides high-resolution spectroscopy in this spectral region.

    • Arman Cingöz
    • , Dylan C. Yost
    •  & Jun Ye

  • News & Views |

    Solvent vapour annealing processes are used to optimize the material properties of thin films of semiconducting polymers used in electronic devices. One such process has now been examined at the molecular level.

    • Yi Fu
    •  & Joseph R. Lakowicz

  • Letter |

    Inelastic light scattering spectroscopy is a powerful tool in materials science to probe elementary excitations. In a quantum-mechanical picture, these excitations are generated by the incident photons via intermediate electronic transitions. It is now shown that it is possible to manipulate these intermediate 'quantum pathways' using electrostatically doped graphene. A surprising effect is revealed where blocking one pathway results in an increased intensity, unveiling a mechanism of destructive quantum interference between different Raman pathways. The study refines understanding of Raman scattering in graphene and indicates the possibility of controlling quantum pathways to produce unusual inelastic light scattering phenomena.

    • Chi-Fan Chen
    • , Cheol-Hwan Park
    •  & Feng Wang

  • Letter |

    The harmonic oscillator is a simple and ubiquitous physical system. This paper reports a new realization in the quantum regime, achieving direct controllable coupling between quantized mechanical oscillators. The oscillators are ions held in trapping potentials (separated by 40 micrometres) and coupled through their mutual Coulomb interaction. The system could be used as a building block for quantum computers and simulators.

    • K. R. Brown
    • , C. Ospelkaus
    •  & D. J. Wineland

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