scholarly journals Role of structural saturation and geometry in the luminescence of silicon-based nanostructured materials

1996 ◽  
Vol 53 (12) ◽  
pp. 7847-7850 ◽  
Author(s):  
R. Q. Zhang ◽  
J. Costa ◽  
E. Bertran
Keyword(s):  
Nanostructured Materials ◽  
Silicon Based

scholarly journals MEMs from the Nanoscale Up

2007 ◽  
Vol 129 (03) ◽  
pp. 24-29 ◽  
Author(s):  
Arthur C. Ratzel
Keyword(s):  
Leading Edge ◽  
Consumer Products ◽  
Mems Devices ◽  
Science And Engineering ◽  
Gas Damping ◽  
High Shock ◽  
Mems Technology ◽  
Silicon Based ◽  
Development Laboratory

This article discusses growing role of silicon micro-electron-mechanical systems (MEMS) technology in automotive and consumer products, telecommunications, radio-frequency applications, and medical care. The article also highlights that silicon-based MEMS devices must be constructed in clean rooms, such as one at Sandia's Microelectronics Development laboratory. According to engineers, the search for an in-depth understanding of wear mechanisms in dynamic silicon MEMS is expected to drive an ambitious wave of leading-edge research into microscale science and engineering, distinct from that which prevailed at the mesoscale. It has been found that gas damping between MEMS structures and the substrate, within the sealed package, can cause serious nonlinearities. While this doesn't lead to failure in the classic sense, it may make it harder to close a switch. On the plus side, gas damping can provide a cushion that enables a MEMS device to survive surprisingly high shock loads.

scholarly journals Role of hydrogen in volatile behaviour of defects in SiO 2 -based electronic devices

2016 ◽  
Vol 472 (2190) ◽  
pp. 20160009 ◽  
Author(s):  
Yannick Wimmer ◽  
Al-Moatasem El-Sayed ◽  
Wolfgang Gös ◽  
Tibor Grasser ◽  
Alexander L. Shluger
Keyword(s):  
Ab Initio ◽  
Gate Dielectrics ◽  
Field Effect Transistors ◽  
Electronic Devices ◽  
Charge Trapping ◽  
Oxide Semiconductor ◽  
Gate Oxides ◽  
And Performance ◽  
Silicon Based

Charge capture and emission by point defects in gate oxides of metal–oxide–semiconductor field-effect transistors (MOSFETs) strongly affect reliability and performance of electronic devices. Recent advances in experimental techniques used for probing defect properties have led to new insights into their characteristics. In particular, these experimental data show a repeated dis- and reappearance (the so-called volatility ) of the defect-related signals. We use multiscale modelling to explain the charge capture and emission as well as defect volatility in amorphous SiO 2 gate dielectrics. We first briefly discuss the recent experimental results and use a multiphonon charge capture model to describe the charge-trapping behaviour of defects in silicon-based MOSFETs. We then link this model to ab initio calculations that investigate the three most promising defect candidates. Statistical distributions of defect characteristics obtained from ab initio calculations in amorphous SiO 2 are compared with the experimentally measured statistical properties of charge traps. This allows us to suggest an atomistic mechanism to explain the experimentally observed volatile behaviour of defects. We conclude that the hydroxyl-E′ centre is a promising candidate to explain all the observed features, including defect volatility.

Role of atomic layer deposited aluminum oxide as oxidation barrier for silicon based materials

2015 ◽  
Vol 33 (1) ◽  
pp. 01A142 ◽  
Author(s):  
Giuseppe Fiorentino ◽  
Bruno Morana ◽  
Salvatore Forte ◽  
Pasqualina Maria Sarro
Keyword(s):  
Aluminum Oxide ◽  
Atomic Layer ◽  
Silicon Based

scholarly journals Nanoarchitectonics: Complexes and Conjugates of Platinum Drugs with Silicon Containing Nanocarriers. An Overview

2021 ◽  
Vol 22 (17) ◽  
pp. 9264
Author(s):  
Kinga Piorecka ◽  
Jan Kurjata ◽  
Wlodzimierz A. Stanczyk
Keyword(s):  
Drug Delivery ◽  
Driving Force ◽  
State Of The Art ◽  
Platinum Drugs ◽  
Research Groups ◽  
Current State ◽  
Delivery Platform ◽  
Silicon Based ◽  
Intensive Search

The development in the area of novel anticancer prodrugs (conjugates and complexes) has attracted growing attention from many research groups. The dangerous side effects of currently used anticancer drugs, including cisplatin and other platinum based drugs, as well their systemic toxicity is a driving force for intensive search and presents a safer way in delivery platform of active molecules. Silicon based nanocarriers play an important role in achieving the goal of synthesis of the more effective prodrugs. It is worth to underline that silicon based platform including silica and silsesquioxane nanocarriers offers higher stability, biocompatibility of such the materials and pro-longed release of active platinum drugs. Silicon nanomaterials themselves are well-known for improving drug delivery, being themselves non-toxic, and versatile, and tailored surface chemistry. This review summarizes the current state-of-the-art within constructs of silicon-containing nano-carriers conjugated and complexed with platinum based drugs. Contrary to a number of other reviews, it stresses the role of nano-chemistry as a primary tool in the development of novel prodrugs.

scholarly journals Recent Developments in the Use of Glyconanoparticles and Related Quantum Dots for the Detection of Lectins, Viruses, Bacteria and Cancer Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Pedro J. Hernando ◽  
Simone Dedola ◽  
María J. Marín ◽  
Robert A. Field
Keyword(s):  
Quantum Dots ◽  
Cancer Cells ◽  
Semiconductor Quantum Dots ◽  
The Past ◽  
Coated Nanoparticles ◽  
Gold Silver ◽  
Recent Developments ◽  
Protein Toxins ◽  
Silicon Based

Carbohydrate-coated nanoparticles—glyconanoparticles—are finding increased interest as tools in biomedicine. This compilation, mainly covering the past five years, comprises the use of gold, silver and ferrite (magnetic) nanoparticles, silicon-based and cadmium-based quantum dots. Applications in the detection of lectins/protein toxins, viruses and bacteria are covered, as well as advances in detection of cancer cells. The role of the carbohydrate moieties in stabilising nanoparticles and providing selectivity in bioassays is discussed, the issue of cytotoxicity encountered in some systems, especially semiconductor quantum dots, is also considered. Efforts to overcome the latter problem by using other types of nanoparticles, based on gold or silicon, are also presented.

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