X-ray Holography with Atom Resolution

Faigel, G.; Tegze, M.

doi:10.1051/epn/19962705179

Cited by 4 publications

(10 citation statements)

References 7 publications

(10 reference statements)

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“…Sensitive and low‐dose X‐ray detection is vital in medicine, industry, and science. [ 1–3 ] Two major technologies are used to construct X‐ray detectors, namely, indirect and direct approaches, [ 4–11 ] as illustrated in Figure a and Figure S1a, Supporting Information. Comparatively, the direct approach that involves the one‐step creation of electron–hole pairs (EHPs) in a semiconductor photoconductor through the absorption of X‐ray photons is more compelling owing to its high photoelectric conversion efficiency and high intrinsic spatial resolution.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin and Ultrasensitive Direct X‐ray Detector Based on Heterojunction Phototransistors

Gao

Wang

et al. 2021

Advanced Materials

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Most contemporary X‐ray detectors adopt device structures with non/low‐gain energy conversion, such that a fairly thick X‐ray photoconductor or scintillator is required to generate sufficient X‐ray‐induced charges, and thus numerous merits for thin devices, such as mechanical flexibility and high spatial resolution, have to be compromised. This dilemma is overcome by adopting a new high‐gain device concept of a heterojunction X‐ray phototransistor. In contrast to conventional detectors, X‐ray phototransistors allow both electrical gating and photodoping for effective carrier‐density modulation, leading to high photoconductive gain and low noise. As a result, ultrahigh sensitivities of over 105 μC Gyair−1 cm−2 with low detection limit are achieved by just using an ≈50 nm thin photoconductor. The employment of ultrathin photoconductors also endows the detectors with superior flexibility and high imaging resolution. This concept offers great promise in realizing well‐balanced detection performance, mechanical flexibility, integration, and cost for next‐generation X‐ray detectors.

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Section: Introductionmentioning

confidence: 99%

Ultrathin and Ultrasensitive Direct X‐ray Detector Based on Heterojunction Phototransistors

Gao

Wang

et al. 2021

Advanced Materials

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“…The solution for the first problem was given by the present authors (Tegze and Faigel 1991). A few years later the second problem was also solved by careful experimental arrangements and the 3D order of Sr atoms was reconstructed first in SrTiO 3 (Tegze and Faigel 1996) and then the two-dimensional (2D) picture of the Fe atoms in the basal plane of Fe 2 O 3 (Gog et al 1996) was reported. The latest experimental development in the field of inside source holography was the use of gamma rays for holographic imaging.…”

Section: Introductionmentioning

confidence: 93%

“…The first x-ray fluorescence holography experiment was performed by the present authors in 1995 (Tegze and Faigel 1996). The schematic view of the experimental set-up is shown in figure 5.…”

Section: Hard X-ray Holography With Inside Sourcementioning

confidence: 99%

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X-ray holography

Faigel¹,

Tegze²

1999

Rep. Prog. Phys.

107

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A review of holographic methods using hard x-rays is presented. The main emphasis is put on those techniques which aim to produce atomic resolution. For this reason 'the inside source concept' and its experimental realizations are discussed in detail. Apart from the general description of holographic imaging with atomic resolution, specific features such as the effect of multiple scattering, translation periodicity and angular dependence of the atomic scattering factor are also given.

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“…of the source and its conservation with time. Moving towards shorter wavelengths (towards water window and 1 keY radiation), where applications are more likely to occur [7,8] will also represent a major step forward.…”

Section: Introductionmentioning

confidence: 99%

Generation and study of high-density metal and dielectric vapor plasmas and the possiblity of their use for x-ray capillary lasers

Kaiser

2003

SPIE Proceedings

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Plasmas produced by capillary discharges have recently received great attention. This could be due to the possible application (soft x-ray laser microscopy and lithography), as well as to the interest in studying the physical phenomena (fusion research, intense sources of continuum and line emission). The soft x-ray lasing has been realized in a gas filled table-top system, utilizing a capillary discharge to excite 46.9 nm transition of Ne-like argon. To obtain lasing at wavelengths below 46 nm in the Ne-like isoelectronic sequence, excitation of higher Z-ions should be used.Highly uniform, high-density metal and dielectric vapor plasmas can be used for the Z-scaling of the Ar IX laser. The technique of the production of ablative plasmas with high-voltage ts discharges utilizing experimental set-up with open-geometry capillaries is discussed.Applications of the developed metal-vapor generator for the Z-scaling of the Ne-like soft x-ray laser, recently realized by our group, is considered.

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X-ray Holography with Atom Resolution

Abstract: A new concept based on well-established fundamental principles allows the high-resolution holographic imaging of atoms inside bulk cystals using X-rays.

Cited by 4 publications

References 7 publications

Ultrathin and Ultrasensitive Direct X‐ray Detector Based on Heterojunction Phototransistors

Ultrathin and Ultrasensitive Direct X‐ray Detector Based on Heterojunction Phototransistors

X-ray holography

Generation and study of high-density metal and dielectric vapor plasmas and the possiblity of their use for x-ray capillary lasers

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