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Updated: Jun 8, 2025

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

Published on: July 25, 2022

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一种新的双倍倍增区域方法,用于在标准CMOS技术中设计高灵敏度和广谱SPAD

Utku Karaca1, Ekin Kizilkan2, Claudio Bruschini2

  • 1Advanced Quantum Architecture Laboratory (AQUA), Ecole Polytechnique Fédérale de Lausanne (EPFL), 2002, Neuchâtel, Switzerland. utku.karaca@epfl.ch.

Scientific reports
|November 7, 2024
PubMed
概括

研究人员开发了一种用于单光子雪崩二极管 (SPAD) 的新技术,以提高更广泛光谱的灵敏度. 这项创新提高了SPAD传感器性能,用于各种光检测应用.

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Design Example: Capacitance Multiplier Circuit01:20

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In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
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Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
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The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
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