Near-field scanning optical microscopy

1986 ◽  
Vol 44 ◽  
pp. 642-643
Author(s):  
E. Betzig ◽  
A. Harootunian ◽  
M. Isaacson ◽  
A. Lewis
Keyword(s):  
Near Field ◽  
Optical Microscope ◽  
Visible Radiation ◽  
Field Methods ◽  
Optical Elements ◽  
Optical Region ◽  
Order Of Magnitude ◽  
Nondestructive Imaging ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

In general, conventional methods of optical imaging are limited in spatial resolution by either the wavelength of the radiation used or by the aberrations of the optical elements. This is true whether one uses a scanning probe or a fixed beam method. The reason for the wavelength limit of resolution is due to the far field methods of producing or detecting the radiation. If one resorts to restricting our probes to the near field optical region, then the possibility exists of obtaining spatial resolutions more than an order of magnitude smaller than the optical wavelength of the radiation used. In this paper, we will describe the principles underlying such "near field" imaging and present some preliminary results from a near field scanning optical microscope (NS0M) that uses visible radiation and is capable of resolutions comparable to an SEM. The advantage of such a technique is the possibility of completely nondestructive imaging in air at spatial resolutions of about 50nm.

BAI Versus BSI Critical Comparison: When and Why We Use It

2012 ◽  
Author(s):  
Edgar N. Arbaje ◽  
Kareem C.L. Edwards ◽  
Takanori K. Endo ◽  
Ana M. Pi ◽  
Rafael Martinez
Keyword(s):  
Critical Comparison

A critical comparison of selected implicit measurement methods.

2018 ◽  
Vol 11 (4) ◽  
pp. 249-266 ◽  
Author(s):  
Judith Znanewitz ◽  
Lisa Braun ◽  
David Hensel ◽  
Claudia Fantapié Altobelli ◽  
Fabian Hattke
Keyword(s):  
Measurement Methods ◽  
Critical Comparison ◽  
Implicit Measurement

A Comparative Exploration of the Spiritual Authority of the Awliyā’ in the Shi‘i and Sufi Traditions

2015 ◽  
Vol 32 (1) ◽  
pp. 49-74
Author(s):  
Rebecca Masterton
Keyword(s):  
Twentieth Century ◽  
Critical Comparison ◽  
Spiritual Authority ◽  
Central Tenet ◽  
Definition Of ◽  
Key Aspects ◽  
Islamic Belief

This paper aims to engage in a critical comparison of the spiritual authority of the awliyā’ in the Shi‘i and Sufi traditions in order to examine an area of Islamic belief that remains unclearly defined. Similarities between Shi‘i and Sufi doctrine have long been noted, but little research has been conducted on how and why they developed. Taking a central tenet of both, walāyah, the paper discusses several of its key aspects as they appear recorded in Shi‘i ḥadīth collections and as they appear later in one of the earliest Sunni Sufi treatises. By extention, it seeks to explore the identity of the awliyā’ and their role in relation to the Twelve Imams. It also traces the reabsorption into Shi‘i culture of the Sufi definition of walāyah via two examples: the works of one branch of the Dhahabi order and those of Allamah Tabataba’i, a popular twentieth-century Iranian mystic and scholar.

fib Bulletin 69. Critical comparison of major seismic codes for buildings

2013 ◽  
Author(s):  
P. Pinto ◽  
P. Bonelli ◽  
R. Eid ◽  
M. Fardis ◽  
R. Fenwick ◽  
...  
Keyword(s):  
Seismic Codes ◽  
Critical Comparison

Field Methods for Studying the Radiation Situation in the Area of the Belarusian NPP in the Pre-Operational Period

ANRI ◽  
2020 ◽  
pp. 31-44
Author(s):  
Aleksey Ekidin ◽  
Aleksey Vasil'ev ◽  
Maksim Vasyanovich ◽  
Evgeniy Nazarov ◽  
Mariya Pyshkina ◽  
...  
Keyword(s):  
Dose Rate ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Field Studies ◽  
Radiation Monitoring ◽  
Normal Operation ◽  
Construction Site ◽  
External Radiation ◽  
Field Methods

The article presents the results of field studies in the area of the Belarusian NPP in the pre-operational period. The «background» contents of gamma-emitting radionuclides in individual components of the environment are determined. The main array of dose rate measurements in the area of the NPP construction site is in the range 0.048 ÷ 0.089 μSv/h. External radiation in the surveyed area is formed at 96% due to 40K, 226Ra and 232Th. The information obtained can be used to correctly interpret the data of future radiation monitoring during normal operation of nuclear power plants.

The Critical Comparison of the Green Parties' Phenomena between Indonesia and Thailand

2011 ◽  
Author(s):  
Eko Priyo Purnomo ◽  
Klaus Hubacek ◽  
Megandaru Widhi Kawuryan
Keyword(s):  
Critical Comparison ◽  
Green Parties
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