Analytical chemistry articles within Nature Photonics

Featured

• Article
  19 April 2024 | Open Access

  Electrochemically controlled blinking of fluorophores for quantitative STORM imaging

  Electrochemical control of the switching of fluorophores in stochastic optical reconstruction microscopy (EC-STORM) enables the counting of single fluorophores as well as cell imaging with improved spatial resolution and reduced artefacts compared with traditional STORM.

  • Ying Yang
  • , Yuanqing Ma
  •  & J. Justin Gooding

• Article | 29 June 2023

  Bond-selective fluorescence imaging with single-molecule sensitivity

  Two-photon excitation with mid- and near-infrared pulses encodes bond selectivity in fluorescence imaging. Single-molecule imaging and spectroscopy is demonstrated on individual fluorophores as well as various labelled biological targets.

  • Haomin Wang
  • , Dongkwan Lee
  •  & Lu Wei

• Letter
  08 June 2023 | Open Access

  Sensitive near-infrared circularly polarized light detection via non-fullerene acceptor blends

  Non-fullerene acceptors open the way to sensitive organic photodetectors for detecting circularly polarized near-infrared light.

  • Li Wan
  • , Rui Zhang
  •  & Feng Gao

• Letter | 10 December 2018

  Coherent injection locking of quantum cascade laser frequency combs

  Quantum cascade laser frequency combs are coherently locked to an external radio-frequency source even in extremely high-feedback conditions. The internal phase-locking mechanism and the possibility of all-electric stabilization are investigated.

  • Johannes Hillbrand
  • , Aaron Maxwell Andrews
  •  & Benedikt Schwarz

• Article | 07 November 2016

  Optical microresonators as single-particle absorption spectrometers

  Single-particle double-modulation absorption spectrometers based on whispering-gallery-mode microresonators achieve sub-100-Hz sensitivity to photothermal resonance shifts and allow for the study of arrays of Fano resonances in the context of plasmonic–photonic hybridization.

  • Kevin D. Heylman
  • , Niket Thakkar
  •  & Randall H. Goldsmith

• Letter | 19 January 2014

  Tip-enhanced infrared nanospectroscopy via molecular expansion force detection

  Mid-infrared spectroscopy with nanometre spatial resolution is highly desired for materials and life sciences applications. A nanoscale mid-infrared spectrometer is demonstrated that detects mechanical forces exerted by molecules on an atomic force microscope tip upon light excitation. It operates under ambient conditions with a high sensitivity and a spatial resolution of better than 25 nm.

  • Feng Lu
  • , Mingzhou Jin
  •  & Mikhail A. Belkin

• News & Views | 24 December 2013

  Tunable lifetime nanocrystals

  Tuning the luminescence lifetimes of upconversion nanocrystals through lanthanide doping provides new opportunities for optical multiplexing in the time domain for applications in imaging and security marking.

  • Renren Deng
  •  & Xiaogang Liu