公开(公告)号：US10036728B2

公开(公告)日：2018-07-31

申请号：US14441218

申请日：2013-11-12

Applicant: Northeastern University

Inventor： Bo Li ,  Ji Hao ,  Hyun Young Jung ,  Yung Joon Jung ,  Swastik Kar

IPC: G01N27/70 ,  G01N27/62 ,  H01J41/02 ,  H01J47/02 ,  H01J49/02

CPC classification number: G01N27/70 ,  G01N27/62 ,  H01J41/02 ,  H01J47/02 ,  H01J49/025

Abstract: An ion detection device has a strip of carbon-based nanomaterial (CNM) film and a chamber enclosing the CNM film. A low bias voltage is applied at the ends of the CNM film strip, and ions present in the chamber are detected by a change in the magnitude of current flowing through the CNM film under the bias. Also provided are methods for fabricating the device, methods for measuring pressure of a gas, and methods for monitoring or quantifying an ionizing radiation using the device.