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1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism

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Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.

pH Scale

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Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...

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In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...

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Hybridoma technology is used for the large-scale production of monoclonal antibodies. Monoclonal antibodies bind to only a single antigenic determinant or epitope. Such antibodies are used in research, diagnostics, and disease therapy. The hybridoma technology established in 1975 by Georges Köhler and Cesar Milstein was awarded the Nobel Prize in Medicine in 1984 for revolutionizing research and therapy.
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Related Experiment Video

Updated: Feb 7, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

Published on: May 23, 2017

Micro and Nano-Scale Technologies for Cell Mechanics.

Mustafa Unal¹, Yunus Alapan^1,2, Hao Jia³

¹Department of Electrical Engineering and Computer Science, Case Western Reserve University, Cleveland, USA.

Nanobiomedicine

|July 20, 2018

Summary

Micro and nano-scale technologies, particularly Biological MEMS (BioMEMS), are revolutionizing cell mechanics research. These advancements offer unprecedented insights into cellular behavior and disease mechanisms.

Keywords:

Biophysics Mechanical Manipulation Microfabrication Microfluidics Nanofabrication Single Cell Analysis

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Last Updated: Feb 7, 2026

Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes

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Micro-scale Engineering for Cell Biology

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Visualization of Failure and the Associated Grain-Scale Mechanical Behavior of Granular Soils under Shear using Synchrotron X-Ray Micro-Tomography

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Published on: September 29, 2019

Area of Science:

Multidisciplinary field integrating cell biology, mechanics, and micro/nanotechnology.

Background:

Recent advances in nanotechnology and microfabrication enable detailed study of cellular intricacies.
Biological MEMS (BioMEMS) leverage systematic design for novel cell analysis platforms.

Purpose of the Study:

To provide an overview of cell mechanics.
To survey micro and nano-scale technologies relevant to cell mechanics.
To discuss applications and future directions in the field.

Main Methods:

Review of existing literature on cell mechanics.
Survey of micro and nano-scale technologies for cell analysis.
Focus on technologies applicable to biology and medicine.

Main Results:

Emerging technologies are rapidly advancing cell mechanics studies.
Micro/nano-technologies are crucial for understanding cellular behavior in native environments.
Applications span imaging, single-cell analysis, cancer research, and organ-on-a-chip systems.

Conclusions:

Micro and nano-scale technologies are transforming cell mechanics.
BioMEMS offer powerful tools for biological and medical research.
Future directions involve continued technological development and application expansion.