Single photon avalanche diode for single molecule detection

1993 ◽  
Vol 64 (6) ◽  
pp. 1524-1529 ◽  
Author(s):  
Li‐Qiang Li ◽  
Lloyd M. Davis
2008 ◽  
Author(s):  
Ivan Rech ◽  
Stefano Marangoni ◽  
Angelo Gulinatti ◽  
Massimo Ghioni ◽  
Sergio Cova

2021 ◽  
Author(s):  
Quint Houwink ◽  
Dylan Kalisvaart ◽  
ShihTe Hung ◽  
jelmer Cnossen ◽  
Daniel Fan ◽  
...  

1998 ◽  
Vol 52 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Steven A. Soper ◽  
Benjamin L. Legendre

While single-molecule detection in flowing sample streams has been reported by a number of groups, the instrumentation can be somewhat prohibitive for many applications due to the complexity and extensive expertise required to operate such a device. In this paper we report on the construction of a single-molecule detection device that is rugged, compact, inexpensive, and easily operated by individuals not well trained in optics and laser operations. The single-molecule detection apparatus consists of a semiconductor diode laser operating in a continuous-wave (CW) mode and a single photon avalanche diode transducer for converting the detected photons into transistor–transistor logic (TTL) pulses for displaying the data. In addition, the sampling volume is produced by a single-component lens, to create a volume on the order of 1 pL, allowing the sampling of microliter volumes of material on reasonable time scales. The device is targeted for operation in the near-IR region (700–1000 nm), where matrix interferences are minimal. Our data will demonstrate the detection of single molecules for the near-IR dyes IR-132 and IR-125, in methanol solvents in flowing sample streams at sampling rates of 100–250 samples/s. Detection efficiencies for the investigated near-IR dyes were found to be 98% for IR-132 and 50% for IR-125. Previous attempts in our laboratory to detect single molecules of IR-125 using time-gated detection were unsuccessful because of the short upper-state lifetime of this fluorophore (τf = 472 ps).


2004 ◽  
Vol 9 (5) ◽  
pp. 913 ◽  
Author(s):  
Michael Gösch ◽  
Alexandre Serov ◽  
Tiemo Anhut ◽  
Theo Lasser ◽  
Alexis Rochas ◽  
...  

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
James W. P. Brown ◽  
Arnaud Bauer ◽  
Mark E Polinkovsky ◽  
Akshay Bhumkar ◽  
Dominic J. B. Hunter ◽  
...  

AbstractSingle-molecule assays have, by definition, the ultimate sensitivity and represent the next frontier in biological analysis and diagnostics. However, many of these powerful technologies require dedicated laboratories and trained personnel and have therefore remained research tools for specialists. Here, we present a single-molecule confocal system built from a 3D-printed scaffold, resulting in a compact, plug and play device called the AttoBright. This device performs single photon counting and fluorescence correlation spectroscopy (FCS) in a simple format and is widely applicable to the detection of single fluorophores, proteins, liposomes or bacteria. The power of single-molecule detection is demonstrated by detecting single α-synuclein amyloid fibrils, that are currently evaluated as biomarkers for Parkinson’s disease, with an improved sensitivity of >100,000-fold over bulk measurements.


2021 ◽  
Author(s):  
Li-juan Wang ◽  
Le Liang ◽  
Bing-jie Liu ◽  
BingHua Jiang ◽  
Chun-yang Zhang

A controlled T7 transcription-driven symmetric amplification cascade machinery is developed for single-molecule detection of multiple repair glycosylases.


Author(s):  
Xiaojia Jiang ◽  
Mingsong Zang ◽  
Fei Li ◽  
Chunxi Hou ◽  
Quan Luo ◽  
...  

Biological nanopore-based techniques have attracted more and more attention recently in the field of single-molecule detection, because they allow the real-time, sensitive, high-throughput analysis. Herein, we report an engineered biological...


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