Tests indicate amplitude resolution with self-sensing to be as good or better than optical detection, and sensitivities up to twice as good, with the same type cantilever.
A compact optical design together with shortened optical path length improved the optical efficiency and detection sensitivity.
Such intrinsic optical sectioning dramatically improves the detection sensitivity and hence imaging depth into scattering samples [ 3, 4].
Although the sensitivity for optical detection of tumoral lesions cannot be expected to be excellent, intrinsic optical contrast of malignant tumors, especially local elevation of tHb levels, should correlate with biological and physiological features.
In order to improve the sensitivity of optical detection, the gold nanoparticles, which label the HPV genotyping target DNA, were enhanced to 15 nm in diameter by conjugating with silver.
Combining the exquisite specificity of biological recognition probes and the excellent sensitivity of laser-based optical detection, biosensors are capable of detecting and differentiating big/chemical constituents of complex systems in order to provide unambiguous identification and accurate quantification.
This first implementation of non-contact optical detection appears significantly less sensitive (by about one order of magnitude) than piezoelectric transducer detection when the sensitivity of piezoelectric transducers is calculated by considering only thermo-electrical fluctuations [ 23].
This chemical property of cyanide was utilized for optical detection of the anion with high sensitivity and selectivity.
Moreover, a study of a bright field based EUV actinic pattern inspection tool design using a hybrid (2D + 3D) model is presented, showing that the impact of noise sources and optical design on critical pattern defects detection sensitivity.
The utilisation of magnetic nanoparticles for magnetically confining and concentrating target analytes in a microscopic volume for in situ optical detection significantly improves the selectivity and sensitivity of DNA sensors.
