Based　on　their　photoinduced　hydrophilicity,　titanium　dioxide　(TiO2)　thin　films　have　many　promising　applications,　such　as　anti-fog,　self-cleaning,　capillary　pump　and　so　on.　Microchannels　were　prepared　on　glass　substrates　by　wet-etching　methods　and　highly　uniform　TiO2　thin　films　were　deposited　into　the　micro-channels　using　pulsed　laser　deposition　(PLD).　The　crystallite　was　determined　as　anatase　by　X-ray　diffraction　(XRD):　the　thickness　and　the　particle　size　were　calculated　to　be　200　nm　and　25　nm　respectively.　The　light　absorbance　and　a　contact　angle　were　also　investigated　using　a　UV-Visible　spectrometer　and　contact　angle　analysis　system,　respectively.　The　results　show　that　the　obtained　TiO2　thin　films　exhibit　hydrophilicity.　The　minimum　contact　angle　was　about　10　degrees　(highly　hydrophilicity)　under　UV　(253.7　nm)　light　irradiation.　The　contact　angle　increased　gradually　after　the　light　was　cut　off.　The　flow　velocity　of　the　water　in　the　microchannels　was　also　investigated.　The　results　indicate　that　the　microchannels　decorated　with　TiO2　thin　films　have　promising　application　in　capillary　pumps.　(C)　2012　Elsevier　B.V.　All　rights　reserved.