Detectors focal-plane array

The infrared radiation caused by the heat of reaction of an enantioselective enzyme-catalyzed transformation can be detected by modern photovoltaic infrared (IT)-thermographic cameras equipped with focal-plane array detectors. Specifically, in the lipase-catalyzed enantioselective acylation of racemic 1-phenylethanol (20), the (K)- and (S)-substrates were allowed to react separately in the wells of microtiter plates, the (7 )-alcohol showing hot spots in the IR-thermographic images (113,114). Thus, enantioselective enzymes can be identified in kinetic resolution. However, quantification has not been achieved thus far by this method, which means that only those mutants can be identified which have E values larger than 100 (113-115). 

Kirkwood, J., Al-Khaldi, S. F., Mossoba, M. M., Sedman, J., and Ismail, A. A. (2004). Fourier transform infrared bacteria identification with the use of a focal-plane-array detector and microarray printing. Appl. Spectrosc. 58,1364-1368. 

Figure 3.6 Schematicofa double-focusing sector field mass spectrograph with Mattauch-Herzog geometry with a linear imaging curve (double focusing for ions of all masses simultaneously) modified field combination with 70°. In the mass spectrograph, photographic ion detection or focal plane array detectors are used for quasi-simultaneous detection of separated ion beams. (H. Kienitz (ed.), Massen-spektrometrie (1968), Verlag Chemie, Weinheim. Reproduced by permission of Wiley-VCH)...

Near-infrared spectral imaging with focal plane array detectors... 

Marcott, C., Reeder, R. C., Paschalis, E. P., Talakis, D. N., Boskey, A. L. and Mendelsohn, R. (1998) Infrared microspectroscopic imaging of biomineralized tissues using a mercury-cadmium-telluride focal-plane array detector. Cell. Mol. Biol. 44, 109-115. 

Marcott, Curtis and Reeder, C. Robert (1998) Industrial applications of FUR microspectro-scopic imaging using a mercury-cadmium-telluride focal-plane array detector. Proceedings of the SPIE - Infrared Technology and Applications XXIV, Vol. 3436, 285-9. 

Lewis, E. N., Treado, R J., Reeder, R. C. et al. (1995) Fourier transform spectroscopic imaging using an infrared focal-plane array detector. Anal. Chem. 67, 3377-81. 

Reeder, C., Marcott, R.C., Sweat, J.A., Panzer, D.D. and Wetzel, D.L. (1999) FT-IR spectroscopy imaging microscopy of wheat kernels using a mercury-cadmium-telluride focal-plane array detector. Vih. Spectrosc., 19, 123-9. 

Lewis, E.N., Kidder, L.H., Lee, E. and Haber, K.S. (2005) Near-infrared spectral imaging with focal plane array detectors, in Spectrochemical Analysis Using Infrared Multichannel Detector (eds R. Bhargava and l.W. Levin), Blacl ell Publ. Ltd., Oxford, pp. 25-55. 

Although still in its early stage of development, PA-IR spectroscopy represents a promising approach to mid-lR spectroscopy. The combination of focal plane array detectors with a spectrograph can ... 

EN Lewis, PJ Treado, RC Reeder, GM Story, AE Dowrey, C Marcott, and IW Levin. Eourier Transform Spectroscopic Imaging Using an Infrared Focal-Plane Array Detector. Anal. Chem. 67 3377-3381, 1995. 

The development of NIR spectral-imaging systems using IR focal-plane array detectors represents a novel technique that may provide new insights into the structure and function of solid dosage forms [46]. 

Focal plane (array) detectors can detect a range of masses simultaneously. This provides a multichannel advantage that can improve the sensitivity for magnetic sectors, and detection limits can be improved if the analysis is limited by the analyte ion current instead of the chemical background level. This is the case for experiments such as MS/MS, electrospray ionisation, and field desorption. Array detectors can be used with pulsed ionisation methods, but the array detectors for commercial magnetic sector mass spectrometers can only detect a portion of the entire mass range at any given instant. 

One advance over the past decade in conventional FTIR microspectroscopy is the advent and availability of focal plane array detectors. These larger... 

Reflectance images were acquired at a magnification of 30 x 30 pm per pixel with a MatrixNIR NIR system (Spectral Dimensions Inc., Olney, MD) equipped with an InGaAs focal-plane array detector with 320 x 256 pixels. A wavelength increment of 7 nm was used to collect data over the spectral range 1100-1750 nm. The first data... 

A so-called bad pixel test to eliminate spectra from dead pixels of focal plane array detector measurements. 

Figure 7.16 Intensity profiles across the central pixel row of a 64x64 pixel focal plane array detector, recorded through a 36x objective and integrated over the 1000-4000 cm spectral range, comparing synchrotron (circles) and Globar (squares) as sources. The data show that the synchrotron beam can be spread out to provide a strong signal over a limited portion of the array. (From Moss et al. 10.)...

D. Moss, B. Gasharova and Y.-L. Mathis, Practical tests of a focal plane array detector microscope at the ANKA-IR beamline. Infrared Phys. TechnoL, 2006, 49, 53-56. 

Figure 22.5 Image areas and corresponding lateral resolutions for different FT-IR imaging measurement modes with a 64 x 64 pixel focal plane array detector.

FT-IR spectroscopic imaging microscopy of wheat kernels using a Mercury-Cadmium-Telluride focal-plane array detector. Vib. Spectrosc., 19 (1),... 

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