Amine functional groups 2 Antibodies 2 Antibody-antigen interactions 2 Antigen-antibody binding 2 Antigens 2 Biosensors 2 Body fluids 2 Bovine serum albumins 2 DNA 2 DNA hybridization 2 DNA molecules 2 DNA sensing 2 Deep reactive ion etching 2 Detection sensitivity 2 Experiments 2 Fiberoptic probes 2 Functional groups 2 Grating structures 2 Grating surface 2 Human serum albumins 2 Micro gratings 2 Normal incidence 2 Nucleic acids 2 Oligonucleotide probes 2 Oligonucleotides 2 Probes 2 Reactive ion etching 2 Reflectance spectrum 2 Reflected light 2 Refractive index 2