TY - JOUR
T1 - Multi-ion sensing device for horticultural application based upon chemical modification and special packaging of ISFETs
AU - van den Vlekkert, H.H.
AU - Verkerk, U.H.
AU - van der Wal, P.D.
AU - van Wingerden, A.
AU - Reinhoudt, D.N.
AU - Haak, J.R.
AU - Honig, G.W.N.
AU - Holterman, H.A.J.
PY - 1992
Y1 - 1992
N2 - A multi-ion sensing device, based on ISFETs, is described for horticultural applications. The advantages of a new packaging technique based on back-side contacted ISFETs are outlined. The basic pH-sensitive ISFETs can be modified to, e.g., potassium-sensitive devices by using neutral carrier-based membranes and an intermediate hydrogel. Both membrane and hydrogel are chemically anchored to the ISFET surface and the ionophore is chemically bonded to the membrane. It is shown that these chemical modifications of the membrane system lead to an increased lifetime for the sensor.
AB - A multi-ion sensing device, based on ISFETs, is described for horticultural applications. The advantages of a new packaging technique based on back-side contacted ISFETs are outlined. The basic pH-sensitive ISFETs can be modified to, e.g., potassium-sensitive devices by using neutral carrier-based membranes and an intermediate hydrogel. Both membrane and hydrogel are chemically anchored to the ISFET surface and the ionophore is chemically bonded to the membrane. It is shown that these chemical modifications of the membrane system lead to an increased lifetime for the sensor.
U2 - 10.1016/0925-4005(92)80027-U
DO - 10.1016/0925-4005(92)80027-U
M3 - Article
VL - 0
SP - 34
EP - 37
JO - Sensors and actuators. B: Chemical
JF - Sensors and actuators. B: Chemical
SN - 0925-4005
IS - 6
ER -