Introduction: In the 1960s, prior to the widespread use of TEMs, several papers described rounded, micron-sized organic particles from carbonaceous chondrite (CC) meteorites [1-3]. Some of these particles were hollow. Except for two early TEM studies [4, 5], the rounded structures were essentially neglected until similar material was discovered in the Tagish Lake meteorite [6]. We subsequently ...

The Materials Measurement Science Division at NIST has a significant effort in support of trace contraband detection and forensic microscopy and analysis. Characterization of the particle characteristics (size, morphology, chemical composition and areal coverage) of trace contraband residues on surfaces is critical for developing optimized sampling strategies for current and emerging trace dete...

When considering elastic electron scattering by thin samples in the transmission electron microscope (TEM) (e.g., by applying zero-loss energy filtering), samples that consist of light elements (e.g., almost all thin samples investigated by cryo TEM) affect mostly the phase of the probing electron wave function and produce very little absorption contrast. However, the phase component of the ima...

808 Ó WILEY-VCH Verlag GmbH, D-69469 Weinheim, 1998 0935-9648/98/1007-0808 $ 17.50+.50/0 Adv. Mater. 1998, 10, No. 10 1.504 Š). Patterns were indexed using TREOR or METRIC-LS programs. SEM/EDX was carried out on a JEOL JSM820 microscope, equipped with a Kevex Quantum Detector Delta 4, and a Hitachi SEM S-570. Infrared spectra were recorded on a Nicolet 205 spectrometer using KBr pressed discs. ...

Introduction: Understanding the distribution, chemistry, and structure of C in carbonaceous chondrites (CC) is fundamental to revealing information on early solar chemical evolution. The Tagish Lake CC has generated much interest partly because of its pristine nature and high C content [1,2,3]. Unique to the Tagish Lake CC are hollow carbonaceous nanoglobules [4]. These particles are morphologi...

The focused-ion-beam (FIB) is the method of choice for site-specific sample preparation for Transmission Electron Microscopy (TEM) in material sciences. A lamella can be physically lifted out from a specific region of a bulk specimen with submicrometer precision and thinned to electron transparency for high-resolution imaging in the TEM. The possibility to use this tool in life sciences applica...

The growth of magnetic nanocrystals inside a semi-conducting matrix is aimed to the development of new devices for data information storage and high sensitive magnetic sensors [1]. As properties of nanostructured materials may differ from their bulk materials in terms of magnetic anisotropy, magnetoresistance, Curie-temperatures and susceptibility [2, 3], careful characterization on the nanomet...

Accurate determination of strain in electronic devices has been the subject of intense work during the last decades. Few techniques are able to provide highly localized and accurate information at the nanoscale. Among these, convergent-beam electron diffraction (CBED) combines the advantages of very small probes and remarkable sensitivity to small variations in the lattice parameter [1]. Howeve...

Reviewed by: Schooling and State Formation in Early Modern Sweden by Bengt Sandin Johannes Westberg Sweden. By Sandin. Cham, Switzerland: Palgrave Macmillan, 2020. xxvi + 420 pp. Cloth €99.99, e-book €85.59. Although historian of education Gunnar Richardson just a few years earlier had provocatively asked whether the history been forgotten Sweden, mid-1980s proved to be extremely fertile for fi...

Cathodoluminescence ~CL! microanalysis provides high-sensitivity spectra and high-resolution images associated with impurity and structural defects at the nanoscale and from luminescent materials including minerals, semiconductor, and dielectric/insulating materials. Cathodoluminescence is the non-incandescent emission of light ~photons! emitted from materials excited by an electron beam. CL ph...