Large area detectors capable of operating with high detection efficiency at energies above 30 keV are required in many contemporary X-ray imaging applications. The properties of high Z compound semiconductors, such as CdTe, make them ideally suitable to these applications. The STFC Rutherford Appleton Laboratory has developed a small pixel CdTe detector with 80×80 pixels on a 250 μm pitch. Hist...

The Voxel Imaging PET (VIP) Pathfinder project intends to show the advantages of using pixelated semiconductor technology for nuclear medicine applications to achieve an improved image reconstruction without efficiency loss. It proposes designs for Positron Emission Tomography (PET), Positron Emission Mammography (PEM) and Compton gamma camera detectors with a large number of signal channels (o...

Abstract Tristan10M is a 10-million-pixel large area detector based on the Timepix3 ASIC. The ASIC can work in event driven mode addition to standard frame mode. Thanks these capabilities of ASIC, Tristan ideal for time-resolved experiments. 10M organized 2 × 5 module matrix, each being made up sixteen chips bump-bonded monolithic pixelated silicon sensor. In this contribution, we will report s...

Thick mercuric iodide (HgI 2 ) detectors are investigated as potential room temperature gamma-ray spectrometers. By using pixelated anodes the induced charge on the electrode is dependent mainly on electron movement and is almost independent of the depth of interaction. Moreover, by reading out the planar cathode signal simultaneously, the depth of interaction can be determined and any effects ...

Scintillators play a key role in the detection chain of several applications which rely on use ionizing radiation, and it is often mandatory to extract detect generated scintillation light as efficiently possible. Typical inorganic scintillators do however feature high index refraction, impacts extraction efficiency negative way. Furthermore, such preclinical Positron Emission Tomography (PET) ...

Direct laser writing is demonstrated by two-photon polymerization of multi-element diffractive optical components that can be switched on and off with an applied voltage. By exploiting the 3D capabilities microfabrication technique, multiple elements are written into a single liquid crystal (LC) layer. The switching behavior controlled simply changing write-voltage anisotropic polymer structure...

We present an automatic method that can be used to abstract high resolution images into very low resolution outputs with reduced color palettes in the style of pixel art. Our method simultaneously solves for a mapping of features and a reduced palette needed to construct the output image. The results are an approximation to the results generated by pixel artists. We compare our method against t...

This paper considers the ubiquitous problem of estimating the state (e.g., position) of an object based on a series of noisy measurements. The standard approach is to formulate this problem as one of measuring the state (or a function of the state) corrupted by additive Gaussian noise. This model assumes both (i) the sensor provides a measurement of the true target (or, alternatively, a separat...

We demonstrate a new type of spatial phase-shifting, dynamic interferometer that can acquire phase-shifted interferograms in a single camera frame. The interferometer is constructed with a pixelated phase-mask aligned to a detector array. The phase-mask encodes a high-frequency spatial interference pattern on two collinear and orthogonally polarized reference and test beams. The phase-differenc...