fluid 248 the fluid removal system 382 b is also referred to herein as a pressure system in one embodiment the fluid removal system 382 b creates and or applies a transport pressure to the first surface 278 a of the transport region 256 in this embodiment the fluid removal system 382 b maintains the transport pressure at the first surface 278 a of the transport region 256 so that a pressure differential exists between the first surface 278 a and the second surface 278 b in alternative embodiments the fluid removal system 382 b controls the pressure in the removal chamber 276 so that the transport pressure at the first surface 278 a is approximately u2212 10 u2212 100 u2212 500 u2212 1000 u2212 2000 u2212 5000 u2212 7000 or u2212 10 000 pa gage in fig3 b the fluid removal system 382 b includes i a low pressure source 390 ba that creates a low chamber pressure in the removal chamber 276 and ii a recovery reservoir 390 bc that captures immersion fluid 248 from the removal chamber 276 in this embodiment the low pressure source 390 ba can include a pump or vacuum source 390 bd and a chamber pressure regulator 390 be for precisely controlling the chamber pressure in the chamber 276 in alternative embodiments for example the chamber pressure is controlled to be approximately u2212 10 u2212 100 u2212 500 u2212 1000 u2212 2000 u2212 5000 u2212 7000 or u2212 10 000 pa gage the chamber pressure regulator 390 be can be controlled by the control system 24 to control the chamber pressure fig3 c illustrates another embodiment of the fluid removal system 382 c and an illustration of a portion of the fluid barrier 254 the transport.