Casting a Wider Net: Rational Synthesis Design of Low-Dimensional Bulk Materials

2017 ◽  
Vol 51 (1) ◽  
pp. 12-20 ◽  
Author(s):  
Katherine A. Benavides ◽  
Iain W. H. Oswald ◽  
Julia Y. Chan
Keyword(s):  
Bulk Materials ◽  
Synthesis Design ◽  
Low Dimensional

Topochemical synthesis of low-dimensional nanomaterials

Nanoscale ◽  
2020 ◽  
Vol 12 (43) ◽  
pp. 21971-21987
Author(s):  
Qicheng Zhang ◽  
Wenchao Peng ◽  
Yang Li ◽  
Fengbao Zhang ◽  
Xiaobin Fan
Keyword(s):  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Bulk Materials ◽  
The Past ◽  
Low Dimensional ◽  
Physical And Chemical ◽  
And Chemical Properties

Over the past several decades, nanomaterials have been extensively studied owing to having a series of unique physical and chemical properties that exceed those of conventional bulk materials.

Turning bulk materials into 0D, 1D and 2D metallic nanomaterials by selective aqueous corrosion

2019 ◽  
Vol 55 (70) ◽  
pp. 10476-10479 ◽  
Author(s):  
Liang Fang ◽  
Jing Jing Feng ◽  
Xiaobin Shi ◽  
Tingzhi Si ◽  
Yun Song ◽  
...  
Keyword(s):  
Bulk Materials ◽  
Aqueous Corrosion ◽  
Metallic Nanomaterials ◽  
Low Dimensional ◽  
Bulk Alloys

A selective aqueous corrosion strategy was proposed for synthesizing low-dimensional nanometals through the dealloying of aqueous-favoring metals from their bulk alloys.

scholarly journals New Directions for Low Dimensional Thermoelectricity

2003 ◽  
Vol 793 ◽  
Author(s):  
M. S. Dresselhaus ◽  
Y. M. Lin ◽  
M. R. Black ◽  
O. Rabin ◽  
G. Dresselhaus
Keyword(s):  
Quantum Wells ◽  
Quantum Wires ◽  
Bulk Materials ◽  
Research Directions ◽  
New Directions ◽  
Low Dimensionality ◽  
Low Dimensional ◽  
New Research ◽  
Low Dimensional Materials ◽  
Made In

ABSTRACTLow dimensionality provides opportunities to modify the properties of bulk materials dramatically and to control materials properties independently in a manner that is not possible for bulk materials. The special characteristics of low dimensional materials to enhance thermoelectric performance have already been demonstrated in quantum wells, quantum wires and quantum dots. The main focus of this review is a summary of advances made in the modeling of quantum dot superlattice nanowires. Several new research directions for low dimensional thermoelectricity or inspired by this research are briefly mentioned.

scholarly journals Emerging rare-earth doped material platforms for quantum nanophotonics

Nanophotonics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 2003-2015 ◽  
Author(s):  
Tian Zhong ◽  
Philippe Goldner
Keyword(s):  
Rare Earth ◽  
Quantum Information ◽  
Information Technologies ◽  
Single Photon ◽  
Synthesis Methods ◽  
Bulk Materials ◽  
Quantum Devices ◽  
Doped Materials ◽  
Low Dimensional ◽  
Rare Earth Doped

AbstractRare-earth dopants are arguably one of the most studied optical centers in solids, with applications spanning from laser optoelectronics, biosensing, lighting to displays. Nevertheless, harnessing rare-earth dopants’ extraordinary coherence properties for quantum information technologies is a relatively new endeavor, and has been rapidly advancing in recent years. Leveraging the state-of-the-art photonic technologies, on-chip rare-earth quantum devices functioning as quantum memories, single photon sources and transducers have emerged, often with potential performances unrivaled by other solid-state quantum technologies. These existing quantum devices, however, nearly exclusively rely on macroscopic bulk materials as substrates, which may limit future scalability and functionalities of such quantum systems. Thus, the development of new platforms beyond single crystal bulk materials has become an interesting approach. In this review article, we summarize the latest progress towards nanoscale, low-dimensional rare-earth doped materials for enabling next generation rare-earth quantum devices. Different platforms with a variety of synthesis methods are surveyed. Their key metrics measured to date are presented and compared. Special attention is placed on the connection between the topology of each platform to its target device applications. Lastly, an outlook for near term prospects of these platforms are given, with a hope to spur broader interests in rare-earth doped materials as a promising candidate for quantum information technologies.

scholarly journals Excitonic Bands in the Optical Absorption Spectra of (Bu4N)CuBr2, (Et4N)2Cu2Br4, (Pr4N)2Cu4Br6, (Bu4N)2Cu2I4, (Me4N)Cu2I3, (Pr4N)4Ag4I8, (Me4N)Ag2I3, (Et4N)Ag2Br3, and Similar Compounds

1999 ◽  
Vol 54 (1) ◽  
pp. 109-112 ◽  
Author(s):  
G. C. Papavassilioua ◽  
G. A. Mousdis ◽  
A. Terzis ◽  
C. P. Raptopoulou
Keyword(s):  
Optical Absorption ◽  
Spectral Region ◽  
Quantum Confinement ◽  
Optical Absorption Spectra ◽  
Bulk Materials ◽  
Trivalent Metal ◽  
Absorption Bands ◽  
Bivalent Metal ◽  
Halide Complexes ◽  
Low Dimensional

The title compounds (natural low-dimensional semiconductor systems) exhibit strong excitonic optical absorption bands in the UV spectral region, because of the quantum confinement of excitons, as in the cases of bivalent-metal and trivalent-metal halide complexes. The excitonic bands are shifted to longer wavelengths, approaching those of the corresponding bulk materials, as the anion-size or the anion-dimensionality increases.

Low-Dimensional Phonon Heat Capacity of Titanium Dioxide Nanotubes

2004 ◽  
Author(s):  
C. Dames ◽  
G. Chen ◽  
B. Poudel ◽  
W. Wang ◽  
J. Huang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Thermal Properties ◽  
Silicon Nanowires ◽  
Building Blocks ◽  
Bulk Materials ◽  
Titanium Dioxide Nanotubes ◽  
3 Dimensional ◽  
Low Dimensional ◽  
Measured Thermal Conductivity

Low-dimensional nanostructures such as nanotubes, nanowires, and quantum dots are promising building blocks for electronic, optical, sensing, and energy conversion applications. For effective device design it is important to understand how the basic thermal properties of nanostructures differ from those of bulk materials. For example, the measured thermal conductivity of silicon nanowires [1] can be understood with a 3-dimensional dispersion relation [2] for diameters down to about 40 nm, although at 22 nm diameter the experiment and modeling diverge sharply.

Some early history of replica techniques for electron microscopy

1992 ◽  
Vol 50 (2) ◽  
pp. 1076-1077
Author(s):  
Robert M. Fisher
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Optical Microscope ◽  
Early History ◽  
Bulk Materials ◽  
Thin Sections ◽  
Transmission Electron ◽  
Reflected Light ◽  
History Of ◽  
Electron Microscopes

By 1940, a half dozen or so commercial or home-built transmission electron microscopes were in use for studies of the ultrastructure of matter. These operated at 30-60 kV and most pioneering microscopists were preoccupied with their search for electron transparent substrates to support dispersions of particulates or bacteria for TEM examination and did not contemplate studies of bulk materials. Metallurgist H. Mahl and other physical scientists, accustomed to examining etched, deformed or machined specimens by reflected light in the optical microscope, were also highly motivated to capitalize on the superior resolution of the electron microscope. Mahl originated several methods of preparing thin oxide or lacquer impressions of surfaces that were transparent in his 50 kV TEM. The utility of replication was recognized immediately and many variations on the theme, including two-step negative-positive replicas, soon appeared. Intense development of replica techniques slowed after 1955 but important advances still occur. The availability of 100 kV instruments, advent of thin film methods for metals and ceramics and microtoming of thin sections for biological specimens largely eliminated any need to resort to replicas.

STEM Study of Surface Plasmon Excitation in Small Spherical Particles

1990 ◽  
Vol 48 (2) ◽  
pp. 42-43
Author(s):  
Daniel UGARTE
Keyword(s):  
Energy Loss ◽  
Spherical Particles ◽  
Small Particles ◽  
Bulk Materials ◽  
Low Loss ◽  
Plasmon Excitation ◽  
Surface Modes ◽  
Surface Plasmon Excitation ◽  
Analytical Electron ◽  
Analytical Electron Microscope

Small particles exhibit chemical and physical behaviors substantially different from bulk materials. This is due to the fact that boundary conditions can induce specific constraints on the observed properties. As an example, energy loss experiments carried out in an analytical electron microscope, constitute a powerful technique to investigate the excitation of collective surface modes (plasmons), which are modified in a limited size medium. In this work a STEM VG HB501 has been used to study the low energy loss spectrum (1-40 eV) of silicon spherical particles [1], and the spatial localization of the different modes has been analyzed through digitally acquired energy filtered images. This material and its oxides have been extensively studied and are very well characterized, because of their applications in microelectronics. These particles are thus ideal objects to test the validity of theories developed up to now.Typical EELS spectra in the low loss region are shown in fig. 2 and energy filtered images for the main spectral features in fig. 3.

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