Apparatus for estimating charged and polarized states of functional groups in a solution
AssigneeKabushiki Kaisha Toshiba
InventorsNobuhiro Gemma, Takashi Ishino
Life of this patent
Estimating the term…
Abstract
An apparatus for detecting an electrostatic force in a solution includes a sample and a cantilever. An end of the cantilever is conductive and has voltage applied to it. The apparatus detects electrostatic interaction caused by functional groups of target molecules in the solution.
Claims12
An apparatus for detecting an electrostatic force in a solution having a sample and a cantilever placed in the solution and designed to detect a force acting between the sample and a tip on the end of the cantilever, comprising:
- a cantilever having a end portion whose surface is made of a conductive material;
- means for applying a voltage to the conductive material on the cantilever end portion;
- and
- means for controlling the voltage applied to the conductive material on the cantilever end portion.
An apparatus for detecting an electrostatic force in a solution having a sample and a cantilever placed in the solution and designed to detect a force acting between the sample and a tip on the end of the cantilever, comprising:
- a cantilever having conductive films respectively formed on a tip-side surface and a back-side surface of the cantilever end portion to be insulated from each other;
- means for independently applying voltages to the conductive films on the two surfaces of the cantilever end portion;
- and
- means for independently controlling the voltages applied to the conductive films on the two surfaces of the cantilever end portion.
An apparatus for detecting an electrostatic force in a solution having a sample and a cantilever placed in the solution and designed to detect a force acting between the sample and a tip on the end of the cantilever, comprising:
- a cantilever having an end portion where polar functional groups are formed on a tip-side surface and a conductive film is formed on a back-side surface, said polar functional groups serving to generate an electrostatic force between said functional groups and the surface of the sample;
- means for applying a voltage to the conductive film on the back-side surface of the cantilever end portion;
- and
- means for controlling the voltage applied to the conductive film on the back-side surface of the cantilever end portion.
Dependencies are inferred from the claim text.