Select Publications

• M. R. C. Sytu and J. Hahm, Principles and applications of ZnO nanomaterials in optical biosensors and ZnO nanomaterial-enhanced biodetection, Biosensors, 14, 480 (2024). 

• M. R. C. Sytu, A. Stoner, and J. Hahm, Strain-modulated and nanorod-waveguided fluorescence in single zinc oxide nanorod-based immunodetection, Biosensors, 14, 85 (2024). 

• M. R. C. Sytu, D. H. Cho, and J. Hahm, Self-assembled block copolymers as a facile pathway to create functional nanobiosensor and nanobiomaterial surfaces, Polymers, 16, 1267 (2024). 

• D. H. Cho, T. Xie, P. J. Mulcahey, N. P. Kelleher, and J. Hahm, Distinctive adsorption mechanism and kinetics of immunoglobulin G on a nanoscale polymer surface, Langmuir, 38, 1458-1470 (2022). 

• J. Truong, A. Stoner, M. R. C. Sytu, T. R. Tatlock, D. H. Cho, and J. Hahm, Elucidation of strain-dependent ZnO nanorod response for nanorod-guided fluorescence intensity, Nanomaterials, 12, 3558 (2022). 

• D. H. Cho, and J. Hahm, Protein−polymer interaction characteristics unique to nanoscale interfaces: A perspective on recent insights, J. Phys. Chem. B, 125, 6040-6057 (2021). 

• D. H. Cho, T. Xie, J. Truong, A. C. Stoner, and J. Hahm, Recent advances towards single biomolecule level understanding of protein adsorption phenomena unique to nanoscale polymer surfaces with chemical variations, Nano Res., 5, 1295–1317 (2020). 

• B. Chon, J. Truong, M. Hansen, J. Hahm*, and Y. J. Lee*, Position- and polarization-specific waveguiding of multi-emissions in single ZnO nanorods, ACS Photonics, 6,1416-1424 (2019)  (*:corresponding authors)

• M. Hansen, J. Truong, B. Szychowski, T. Xie, M.-C. Daniel, and J. Hahm, Single nanomaterial level investigation of ZnO nanorod sulfidation reaction via position resolved confocal Raman spectroscopy, Nanoscale,11, 1147-1158 (2019).

• A. de Bettencourt-Dias and J. Hahm, Women in Nanotechnology: Toward Better Materials through Better Understanding of Low-Dimensional System,  ACS Nano, 12, 7417-7420 (2018).

• J. Truong, M. Hansen, B. Szychowski, T. Xie, M.-C. Daniel, and J. Hahm, Spatially correlated, single nanomaterial-level, structural and optical profiling of Cu-doped ZnO nanorods synthesized via multifunctional silicides, Nanomaterials, 8, 222 (2018).

• T. Xie, J. Chattoraj, P. J. Mulcahey, N. P. Kelleher, E. D. Gado, and J. Hahm, Revealing principal attributes of protein adsorption on block copolymer surfaces with direct experimental evidence at the single protein level, Nanoscale, 10, 9063-9076 (2018).

• J. Burks, S. Nadella, M. Abdullah, C. Mankongpaisarnrung, J. Wang, J. Hahm, R. Tucker, N. Shivapurkar, S. Stern, J. Smith  Cholecystokinin receptor-targeted polyplex nanoparticle inhibits growth and metastasis of pancreatic cancer, Cell. Mol. Gastroenterol. Hepatol., 6, 17-32 (2018).

• M. Hansen, J. Truong, T. Xie, and J. Hahm, Distinct Raman scattering characteristics of individual ZnO nanorods under controlled polarization: Intense end scattering from forbidden modes, Nanoscale, 9, 8470-8480 (2017).

• J. Truong, M. Singh, M. Hansen, and J. Hahm, Polarization-resolved mechanistic investigation of fluorescence signal intensification on zinc oxide nanorod ends, Nanoscale, 9, 8164-8175 (2017).

• M. Singh, J. Truong, W. B. Reeves and J. Hahm, Emerging cytokine biosensors with optical detection modalities and nanomaterial enabled signal enhancement, Sensors, 17, 428 (2017). Featured Article

• D. S. Choi, M. Hansen, E. V. Keuren, and J. Hahm, Highly photoresponsive, ZnO nanorod-based photodetector for operation in the visible spectral range, Nanotechnology, 28 145203 (2017).

This work is filed in U.S. Provisional Patent Application No. 62/426,055, Title: ZnO Photodetector,  Inventors: J. Hahm, D. S. Choi, M. Hansen, E. V. Keuren.

• T. Xie, A. Vora, P. J. Mulcahey, S. E. Nanescu, M. Singh, D. S. Choi, J. K. Huang, C. Liu, D. P. Sanders, and J. Hahm, Surface assembly configurations and packing preferences of fibrinogen mediated by the periodicity and alignment control of block copolymer nanodomains, ACS Nano, 10, 7705-7720 (2016).

• J. Hahm, Fundamental properties of one-dimensional zinc oxide nanomaterials and implementations in various detection modes of enhanced biosensing, Annu. Rev. Phys. Chem., 67, 691-717, Invited Review (2016).

• M. Singh, A. Alabanza, L. E. Gonzalez, W. Wang, W. Brian Reeves, and J. Hahm, Ultratrace level determination and quantitative analysis of kidney injury biomarkers in patient samples attained by zinc oxide nanorods, Nanoscale, 8, 4613-4622 (2016).

This work is featured in an invited magazine article by M. Singh, A. Alabanza, L. E. Gonzalez, W. Wang, W. Brian Reeves, and J. Hahm, Zinc oxide nanorod-based acute kidney injury biomarker detection technology and clinical implications, Clinical Laboratory International, June 2016, 20-26, Invited Article (2016).

• S. Song, T. Xie, K. Ravensbergen, and J. Hahm, Ascertaining effects of nanoscale polymeric interfaces on competitive protein adsorption at the individual protein level, Nanoscale, 8, 3496 - 3509 (2016).

• D. S. Choi, M. Singh, H. Zhou, M. Milchak, B. Monahan, and J. Hahm, Evaluation of polarization rotation in the scattering responses from individual semiconducting oxide nanorods, AIP Adv., 6, 045213(2016). 

• M. Singh, X. Zhou, D. S. Choi, L. E. Gonzalez, J. Wang, and J. Hahm, Effects of crystallographic facet-specific peptide adsorption along single ZnO nanorods on the characteristic fluorescence intensification on nanorod ends (FINE) phenomenon, Nanoscale, 7, 18813-18826 (2015).

• D. S. Choi, M. Singh, H. Zhou, M. Milchak, and J. Hahm, Scattering attributes of one-dimensional semiconducting oxide nanomaterials individually probed for varying light-matter interaction angles, Appl. Phys. Lett. 107 151110 (2015).  

• T. Xie, S. Song, K. Schwenke, M. Singh, L. E. Gonzalez, E. Del Gado, and J. Hahm, Low-index ZnO crystal plane-specific binding behavior of whole immunoglobulin G proteins, Langmuir, 31, 10493-10499 (2015).  

• D. S. Choi, M. Singh, S. Song, J. Y. Chang, Y. Kang, and J. Hahm, Scattering intensity and directionality probed along individual zinc oxide nanorods with precisely controlled light polarization and nanorod orientation, Photonics, 2, 684-701 (2015). 

• M. Singh, R. Jiang, H. Coia, D. S. Choi, A. Alabanza, J. Y. Chang, J. Wang, and J. Hahm, Insights into factors affecting the presence, degree, and temporal stability of fluorescence intensification on ZnO nanorod ends, Nanoscale, 7, 1424-1436 (2015). 

• S. Zhao, D. S. Choi, T. Lee, A. K. Boyd, P. Barbara, E. V. Keuren and J. Hahm, Indium tin oxide nanowire networks as effective UV/VIS photodetection platforms, J. Phys. Chem. C. 119, 14483-14489, Invited Article (2015). 

• S. Song, K. Ravensbergen, A. Alabanza, D. Soldin, and J. Hahm, Distinct adsorption configurations and self-assembly characteristics of fibrinogen on chemically uniform and alternating surfaces including block copolymer nanodomains, ACS Nano, 8, 5257-5269 (2014).

• J. Hahm, Fundamentals of nanoscale polymer-protein interaction and potential contributions to solid-state nanobioarrays, Langmuir, 30, 9891-9904 (2014)  Invited Feature Article, Front Cover Article . 

1. D. S. Choi, D. Y. Joh, T. Lee, M. Milchak, H. Zhou, Y. Kang, and J. Hahm, Position- and orientation-controlled polarized light interaction of individual indium tin oxide nanorods, Appl. Phys. Lett. 104, 083112 (2014). 

• M. Singh, S. Song, and J. Hahm, Unique temporal and spatial biomolecular emission profile on individual zinc oxide nanorods, Nanoscale, 6, 308 - 315 (2014).  

• J. Hahm, Zinc oxide nanostructures for biomedical fluorescence detection, J. Nanosci. Nanotech. 14, 475-486 (2014) Invited Review. 

• J. Hahm, Biomedical detection via macro– and micro-sensors fabricated with metallic and semiconducting oxides, J. Biomed. Nanotech., 9 1-25 (2013)  

• S. Song, M. Milchak, H. Zhou, T. Lee, M. Hanscom and J. Hahm, Nanoscale protein arrays of rich morphologies via self-assembly on chemically treated diblock copolymer surfaces, Nanotechnology, 24 095601 (2013).  

• S. Song, M. Milchak, H. Zhou, T. Lee, M. Hanscom and J. Hahm, Elucidation of novel nanostructures by time-lapse monitoring of polystyrene-block-polyvinylpyridine under chemical treatment, Langmuir, 28 8384-8391 (2012).

• S. Zhao, S. Song, D. Choi, Y. Guo, and J. Hahm, Application of well-defined indium tin oxide nanorods as Raman active platforms, Appl. Phys. Lett. 101 053117 (2012). 

• J. Hahm, Polymeric surface-mediated protein assembly: Macroscopic and nanoscale approaches for biosensor applications, J. Biomed. Nanotech. 7 731-742 (2011).

• J. Hahm, Functional polymers in protein detection platforms: Optical, electrochemical, electrical, mass-sensitive and magnetic sensors, Sensors, 113327-3355 (2011).   

• Y. Zhang, C. Xie, H. Su, J. Liu, S. Pickering, Y. Wang, W. Yu, J. Wang, W. Yiding, J. Hahm, N. Dellas, S. Mohney, and J. Xu, Employing heavy metal-free colloidal quantum dots in solution-processed white light emitting diodes, Nano Lett. 11 329-332 (2011).

• J. Hahm, Enhanced Fluorescence Detection Enabled by Zinc Oxide Nanomaterials, Chapter 12 in Metal Enhanced Fluorescence, C. D. Geddes, ed. Wiley (2010).

• N. Kumar, O. Parajuli, M. Feng, and J. Hahm, Facile synthesis and novel application of tin-rich indium tin oxide nanorods, Appl. Phys. Lett. 96053705 (2010).

• Z. Tan, T. Zhu, M. Thein, S. Gao, A. Cheng, F. Zhang, C. F. Zhang, H. P. Su, J. K. Wang, R. Henderson, J. Hahm and J. Xu, Integration of planar and bulk heterojunctions in polymer/nanocrystal hybrid photovoltaic cells, Appl. Phys. Lett. 95 063510 (2009). 

• C. Zhang, F. Zhang, T. Xia, N. Kumar, J. Hahm, J. Liu, Z. L. Wang, and J. Xu, Low-threshold two photon-pumped ZnO nanowire lasers, Opt. Express 17 7893-7900 (2009). 

• V. Adalsteinsson, O. Parajuli, S. Kepics, A. Gupta, W. Brian Reeves, and J. Hahm, Ultrasensitive detection of cytokines enabled by nanoscale ZnO arrays, Anal. Chem. 80 6594-6601 (2008).

• C. Zhang, F. Zhang, S. Qian, N. Kumar, J. Hahm, and J. Xu, Multi-Photon absorption induced amplified spontaneous emission from biocatalyst synthesized ZnO nanorods, Appl. Phys. Lett. 92 233116 (2008).

• N. Kumar, O. Parajuli, A. Gupta, and J. Hahm, Elucidation of protein adsorption behavior on polymeric surfaces: Towards high density, high payload, protein templates, Langmuir, 24 2688-2694 (2008).

• A. Dorfman, O. Parajuli, N. Kumar, and J. Hahm, Novel telomeric repeat elongation assay performed on zinc oxide nanorod array supports, J. Nanosci. Nanotech. 8 410-415 (2007). 

• O. Parajuli, A. Gupta, N. Kumar, and J. Hahm, Evaluation of enzymatic activity on nanoscale PS-b-PMMA diblock copolymer domains, J. Phys. Chem. B 111 14022-14027 (2007).

• N. Kumar, O. Parajuli, and J. Hahm, In situ integration of free-standing zinc oxide nanorods using copper silicide nanobeams, Appl. Phys. Lett. 91 143114 (2007). 

• N. Kumar, O. Parajuli, A. Dorfman, D. Kipp, and J. Hahm, Activity study of self-assembled proteins on nanoscale diblock copolymer templates, Langmuir 23 7416-7422 (2007). 

• O. Parajuli, N. Kumar, D. Kipp, and J. Hahm, Carbon nanotube cantilevers on self-assembled Cu3Si nanobeams, Appl. Phys. Lett. 90 173107 (2007). 

• N. Kumar, O. Parajuli, and J. Hahm, Two-dimensionally self-arranged protein nanoarrays on diblock copolymer templates, J. Phys. Chem. B 1114581-4587 (2007). 

• A. Dorfman, N. Kumar, and J. Hahm, Nanoscale ZnO-enhanced fluorescence detection of protein interactions, Adv. Mater. 18 2685-2690 (2006). 

• N. Kumar, A. Dorfman, and J. Hahm, Ultrasensitive DNA Sequence Detection of Bacillus anthracis using nanoscale ZnO sensor arrays, Nanotechnology 17 2875-2881 (2006), Cover Article.

• A. Dorfman, N. Kumar, and J. Hahm, Highly Sensitive Biomolecular fluorescence detection using nanoscale ZnO platforms, Langmuir 22 4890-4895 (2006).

• N. Kumar and J. Hahm, Nanoscale protein patterning using self-assembled diblock copolymers, Langmuir, 21 6652-6655 (2005).

• N. Kumar, A. Dorfman, and J. Hahm, Fabrication of optically enhanced ZnO nanorods and microrods using novel biocatalysts, J. Nanosci. Nanotech. 5 1915-1918 (2005). 

• N. Kumar, W. Curtis and J. Hahm, Laterally aligned, multiwalled carbon nanotube growth using Magnetospirillum magnetotacticum, Appl. Phys. Lett.  86 173101 (2005).

• Direct ultrasensitive electrical detection of DNA and DNA sequence variations using nanowire nanosensors, J. Hahm and C. M. Lieber, Nano Lett. 451 (2004). 

• Time-resolved AFM imaging studies of asymmetric PS-b-PMMA ultrathin films: Dislocation and disclination transformations, defect mobility, and evolution of nanoscale morphology, J. Hahm and S. J. Sibener, J. Chem. Phys. 114 4730 (2001).

• Structural and topological differences between a glycopeptide-intermediate resistant clinical strain and vancomycin-susceptible strains of Staphylococcus aureus revealed by AFM, S. Boyle-Vavra, J. Hahm, S. J. Sibener, and R. S. Daum, Antimicrobial Agents and Chemotherapy 44 3456 (2000). 

• Cylinder alignment in annular structures of microphase separated polystyrene-b-polymethylmethacrylate, J. Hahm and S. J. Sibener, Langmuir 164766 (2000). 

• Stress induced modification of electrochemical metallic corrosion: AFM imaging studies of nickel and alloyed aluminum, J. Hahm and S. J. Sibener, Appl. Surf. Sci. 161 375 (2000). 

• Defect evolution in ultrathin films of PS-b-PMMA observed by atomic force microscopy, J. Hahm, W. A. Lopes, H. M. Jaeger and S. J. Sibener, J. Chem. Phys. 109 10111 (1998).

• Silicon nitride membrane substrates for the investigations of local structures in polymer thin films, T. L. Morkved, W. A. Lopes, J. Hahm, S. J. Sibener and H. M. Jaeger, Polymer 39 3871 (1998).