Elastic deformability and luminescence of crystals of polyhalogenated platinum(II)-bipyridine complexes

CrystEngComm ◽  
2021 ◽  
Author(s):  
Masaki Yoshida ◽  
Yusuke Makino ◽  
Toshiyuki Sasaki ◽  
Shunichi Sakamoto ◽  
Satoshi Takamizawa ◽  
...  

Single crystals showing elastic or plastic flexibility have attracted increasing attention as next-generation soft materials. Herein, we successfully developed a series of polyhalogenated platinum(II)-bipyridine complexes showing solvent-of-crystallisation-dependent elastic flexibility. Notably,...

2012 ◽  
Vol 24 (17) ◽  
pp. 2289-2293 ◽  
Author(s):  
Beatrice Fraboni ◽  
Andrea Ciavatti ◽  
Francesco Merlo ◽  
Luca Pasquini ◽  
Anna Cavallini ◽  
...  

MRS Bulletin ◽  
2002 ◽  
Vol 27 (10) ◽  
pp. 752-760 ◽  
Author(s):  
Rajiv K. Singh ◽  
Seung-Mahn Lee ◽  
Kyu-Se Choi ◽  
G. Bahar Basim ◽  
Wonseop Choi ◽  
...  

AbstractThe formulation of slurries for chemical–mechanical planarization (CMP) is currently considered more of an art than a science, due to the lack of understanding of the wafer, slurry, and pad interactions involved. Several factors, including the large number of input variables for slurries and the synergistic interplay among input variables and output parameters, further complicate our ability to understand CMP phenomena. This article provides a fundamental basis for the choice of chemical additives and particles needed for present-day and next-generation slurry design. The effect of these components on nanoscale and microscale interaction phenomena is investigated. Methodologies are suggested for the development of next-generation slurries required to overcome CMP challenges related to defectivity and the surface topography of soft materials such as Low-κ dielectrics and copper.


Nanoscale ◽  
2019 ◽  
Vol 11 (46) ◽  
pp. 22440-22445
Author(s):  
Zhendong Wang ◽  
Hang Yang ◽  
Sihong Zhang ◽  
Jianyu Wang ◽  
Kai Cao ◽  
...  

High-throughput growth of large size transition metal dichalcogenide (TMD) single crystals is an important challenge for their applications in the next generation electronic and optoelectronic integration devices.


2008 ◽  
Author(s):  
Teruhiko Nawata ◽  
Yoji Inui ◽  
Toshiro Mabuchi ◽  
Naoto Mochizuki ◽  
Isao Masada ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2733 ◽  
Author(s):  
Patrizia Bocchetta ◽  
Domenico Frattini ◽  
Srabanti Ghosh ◽  
Allibai Mohanan Vinu Mohan ◽  
Yogesh Kumar ◽  
...  

Next-generation wearable technology needs portable flexible energy storage, conversion, and biosensor devices that can be worn on soft and curved surfaces. The conformal integration of these devices requires the use of soft, flexible, light materials, and substrates with similar mechanical properties as well as high performances. In this review, we have collected and discussed the remarkable research contributions of recent years, focusing the attention on the development and arrangement of soft and flexible materials (electrodes, electrolytes, substrates) that allowed traditional power sources and sensors to become viable and compatible with wearable electronics, preserving or improving their conventional performances.


Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2834
Author(s):  
Pengfei Yin ◽  
Yang Liu ◽  
Lin Xiao ◽  
Chao Zhang

Neural electrodes are essential for nerve signal recording, neurostimulation, neuroprosthetics and neuroregeneration, which are critical for the advancement of brain science and the establishment of the next-generation brain–electronic interface, central nerve system therapeutics and artificial intelligence. However, the existing neural electrodes suffer from drawbacks such as foreign body responses, low sensitivity and limited functionalities. In order to overcome the drawbacks, efforts have been made to create new constructions and configurations of neural electrodes from soft materials, but it is also more practical and economic to improve the functionalities of the existing neural electrodes via surface coatings. In this article, recently reported surface coatings for neural electrodes are carefully categorized and analyzed. The coatings are classified into different categories based on their chemical compositions, i.e., metals, metal oxides, carbons, conducting polymers and hydrogels. The characteristic microstructures, electrochemical properties and fabrication methods of the coatings are comprehensively presented, and their structure–property correlations are discussed. Special focus is given to the biocompatibilities of the coatings, including their foreign-body response, cell affinity, and long-term stability during implantation. This review article can provide useful and sophisticated insights into the functional design, material selection and structural configuration for the next-generation multifunctional coatings of neural electrodes.


Author(s):  
Lucien F. Trueb

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.


Author(s):  
E. L. Thomas ◽  
S. L. Sass

In polyethylene single crystals pairs of black and white lines spaced 700-3,000Å apart, parallel to the [100] and [010] directions, have been identified as microsector boundaries. A microsector is formed when the plane of chain folding changes over a small distance within a polymer crystal. In order for the different types of folds to accommodate at the boundary between the 2 fold domains, a staggering along the chain direction and a rotation of the chains in the plane of the boundary occurs. The black-white contrast from a microsector boundary can be explained in terms of these chain rotations. We demonstrate that microsectors can terminate within the crystal and interpret the observed terminal strain contrast in terms of a screw dislocation dipole model.


Author(s):  
M.P. Thomas ◽  
A.R. Waugh ◽  
M.J. Southon ◽  
Brian Ralph

It is well known that ion-induced sputtering from numerous multicomponent targets results in marked changes in surface composition (1). Preferential removal of one component results in surface enrichment in the less easily removed species. In this investigation, a time-of-flight atom-probe field-ion microscope A.P. together with X-ray photoelectron spectroscopy XPS have been used to monitor alterations in surface composition of Ni3Al single crystals under argon ion bombardment. The A.P. has been chosen for this investigation because of its ability using field evaporation to depth profile through a sputtered surface without the need for further ion sputtering. Incident ion energy and ion dose have been selected to reflect conditions widely used in surface analytical techniques for cleaning and depth-profiling of samples, typically 3keV and 1018 - 1020 ion m-2.


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