Recent experimental advances in precision Casimir force measurements with the atomic force microscope

2006 ◽  
Vol 39 (21) ◽  
pp. 6233-6244 ◽  
Author(s):  
F Chen ◽  
U Mohideen
Keyword(s):  
Atomic Force Microscope ◽  
Casimir Force ◽  
Force Measurements ◽  
Atomic Force

CASIMIR FORCE EXPERIMENTS IN AIR: TWO BIRDS WITH ONE STONE

2010 ◽  
Vol 25 (11) ◽  
pp. 2231-2239 ◽  
Author(s):  
S. DE MAN ◽  
K. HEECK ◽  
K. SMITH ◽  
R. J. WIJNGAARDEN ◽  
D. IANNUZZI
Keyword(s):  
Atomic Force Microscope ◽  
High Precision ◽  
Electrostatic Potential ◽  
Casimir Force ◽  
Hydrodynamic Force ◽  
Force Sensor ◽  
Force Measurements ◽  
Atomic Force ◽  
Potential Measure ◽  
Interacting Surfaces

We present a short overview of the recent efforts of our group in the design of high precision Casimir force setups. We first describe our Atomic Force Microscope based technique that allows one to simultaneously and continuously calibrate the instrument, compensate for a residual electrostatic potential, measure the Casimir force, and, in the presence of a fluid in the gap between the interacting surfaces, measure the hydrodynamic force. Then we briefly discuss a new force sensor that adapts well to Casimir force measurements in critical environments.

CONSTRAINTS ON YUKAWA-TYPE HYPOTHETICAL INTERACTIONS FROM RECENT CASIMIR FORCE MEASUREMENTS

2002 ◽  
Vol 17 (29) ◽  
pp. 4143-4152 ◽  
Author(s):  
G. L. KLIMCHITSKAYA ◽  
U. MOHIDEEN
Keyword(s):  
Atomic Force Microscope ◽  
Long Range ◽  
Casimir Force ◽  
Casimir Effect ◽  
Torsion Pendulum ◽  
Force Measurements ◽  
Atomic Force ◽  
Long Range Interactions ◽  
Conventional Methods

Constraints on the Yukawa-type long-range interactions following from the Casimir effect are considered. The constraints obtained from the recent Casimir force measurements by means of a torsion pendulum and an atomic force microscope are collected and compared. New constraints are obtained from the measurement of the lateral Casimir force. The conclusion is made that the Casimir effect has an advantage over the conventional methods in obtaining stronger constraints on hypothetical interactions.

MEASUREMENTS OF THE NORMAL AND SHAPE DEPENDENT CASIMIR FORCES USING AN ATOMIC FORCE MICROSCOPE

2002 ◽  
Vol 17 (06n07) ◽  
pp. 711-721 ◽  
Author(s):  
F. CHEN ◽  
B. W. HARRIS ◽  
A. ROY ◽  
U. MOHIDEEN
Keyword(s):  
Atomic Force Microscope ◽  
Casimir Force ◽  
Experimental Results ◽  
Precision Measurements ◽  
Force Measurements ◽  
Casimir Forces ◽  
Atomic Force ◽  
History Of

The precision instrumental developments and the modern unification theories using compact dimensions have motivated a resurgence in the field of Casimir force measurements. Here, after a brief discussion of the history of Casimir force measurements, the experimental results of Casimir force measurements using an Atomic Force Microscope will be presented. Precision measurements of the normal Casimir force, demonstration of the shape dependent Casimir force and the lateral Casimir force will be presented.

CRITICAL STEPS IN DATA ANALYSIS FOR PRECISION CASIMIR FORCE MEASUREMENTS WITH SEMICONDUCTING FILMS

2011 ◽  
Vol 26 (22) ◽  
pp. 3900-3909 ◽  
Author(s):  
A. A. BANISHEV ◽  
CHIA-CHENG CHANG ◽  
U. MOHIDEEN
Keyword(s):  
Data Analysis ◽  
Indium Tin Oxide ◽  
Casimir Force ◽  
High Vacuum ◽  
Force Measurements ◽  
Uv Treatment ◽  
Critical Data ◽  
Ito Film ◽  
Atomic Force ◽  
Gold Sphere

Some experimental procedures and corresponding results of the precision measurement of the Casimir force between low doped Indium Tin Oxide ( ITO ) film and gold sphere are described. Measurements were performed using an Atomic Force Microscope in high vacuum. It is shown that the magnitude of the Casimir force decreases after prolonged UV treatment of the ITO film. Some critical data analysis steps such as the correction for the mechanical drift of the sphere-plate system and photodiodes are discussed.

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