Dip-pen nanolithography has been successfully demonstrated with hydrosols of Pd , Au , magnetic γ- Fe 2 O 3 and luminescent Eu 3+ doped LaPO 4 on various substrates such as silicon and mica. The magnetic nature of γ- Fe 2 O 3 patterns has been studied by MFM measurements. The patterns were independently imaged and characterized by employing LEEM and XPEEM.