[1] Ahmad Umar*, M. S. Chauhan, S. Chauhan, R. Kumar, P. Sharma, Kirti Janghu Tomar, R. Wahab, A. Al-Hajry, and Dilbag Singh, "Applications of ZnO Nanoflowers as Antimicrobial Agents for Escherichia coli and Enzyme-Free Glucose Sensor", Journal of Biomedical Nanotechnology, 9 (2013) 1794-1802. DOI: 10.1166/jbn.2013.1751

[2] S. Radhakrishnan, C. Sumathi, Ahmad Umar, Sang Jae Kim, J. Wilson, V. Dharuman, "Polypyrrole-Poly(3,4-ethylenedioxythiophene)-Ag (PPy-PEDOT-Ag) nano composite films for label-free electrochemical DNA sensing", Biosensors and Bioelectronics, 47 (2013) 133-140. doi.org/10.1016/j.bios.2013.02.049

[3] Ahmad Umar, M. S. Akhtar, G. N. Dar, S. Baskoutas, "Low-temperature synthesis of ?-Fe2O3 hexagonal nanoparticles for environmental remediation and smart sensor applications", Talanta, 116 (2013) 1060-1066. doi.org/10.1016/j.talanta.2013.08.026

[4] Xiuwen Cheng, Huiling Liu, Xiujuan Yu, Qinghua Chen, Junjing Li, Pu Wang, Ahmad Umar, Qiang Wang, "Preparation of highly ordered TiO2 nanotube array photoelectrode for the photoelectrocatalytic degradation of methyl blue: activity and mechanism study", Science of Advanced Materials, 5 (2013) 1563-1570. doi.org/10.1166/sam.2013.1673

[5] Qiang Wang, Jingwen Wu, Yanshan Gao, Xi Zhang, Ahmad Umar, Zhanhu Guo, Dermot O'Hare, "Synthesis of polypropylene/Mg3Al-tartrazine LDH nanocomposites with enhanced thermal stability, UV absorption, and rheological properties", RSC Advances, 3 (2013) 26017-26024.DOI: 10.1039/C3RA44452J

[6] Yanshan Gao, Jingwen Wu, Zhang Zhang, Xianfeng Yi, Anmin Zheng, Ahmad Umar, Qiang Wang, "Comprehensive investigation of CO2 adsorption on Mg-Al-CO3 LDH-derived mixed metal oxides", Journal of Materials Chemistry A, 1 (2013) 12782-12790. DOI: 10.1039/C3TA13039H

[7] Rizwan Wahab, Ahmad Umar*, Sourabh Dwivedi, Kirti Janghu Tomar, Hyung-Shik Shin, and I. H. Hwang, "ZnO Nanoparticles: Cytological effect on chick fibroblast cells and antimicrobial activities towards Escherichia Coli and Bacillus Subtilis", Science of Advanced Materials, 5 (2013) 1571-1580. doi.org/10.1166/sam.2013.1687

[8] Ahmad Umar*, M. S. Akhtar, R. I. Badran, M. Abaker, S. H. Kim, A. Al-Hajry, S. Baskoutas, "Electrical properties of solution processed p-SnS nanosheets/n-TiO2 heterojunction assembly", Applied Physics Letters, 103 (2013) 101602. doi.org/10.1063/1.4819838

[9] Sushil Kumar Kansal*, Swati Sood, Ahmad Umar*, S.K. Mehta, "Photocatalytic Degradation of Eriochrome Black T Dye Using Well-Crystalline Anatase TiO2 Nanoparticles", Journal of Alloys and Compounds, 581 (2013) 392-397. doi.org/10.1016/j.jallcom.2013.07.069

[10] Khushboo, Ahmad Umar*, Sushil K. Kansal, Surinder K Mehta*, "Highly-sensitive and selective detection of hydrazine at gold electrode modified with PEG-coated CdS Nanoparticles", Sensors and Actuators B: Chemical, 188 (2013) 372-377. doi.org/10.1016/j.snb.2013.06.095

[11] G. R. Chaudhary, Priya Saharan, S.K. Mehta, Suman Mor, Ahmad Umar*, "Well-crystalline ZnO nanostructures for the removal of Acridine Orange and Coomassie Brilliant Blue R-250 hazardous dyes", Science of Advanced Materials, 5 (2013) 1886-1894. doi.org/10.1166/sam.2013.1701

[12] Yanshan Gao, Jingwen Wu, Zhang Zhang, Rong Jin, Xi Zhang, Xingru Yan, Ahmad Umar, Zhanhu Guo, Qiang Wang*, "Synthesis of polypropylene/Mg3Al-X (X = CO32-, NO3-, Cl-, SO42-) LDH nanocomposites using solvent mixing method: thermal and melt rheological properties", Journal of Materials Chemistry A, 1 (2013) 9928-9934. DOI: 10.1039/C3RA44452J

[13] Qiang Wang, Yanshan Gao, Zhang Zhang, Jingwen Wu, Linhai Duan, Ahmad Umar, Luyi Sun, Zhanhu Guo, "Synthesis and characterization of Co-K/KxTi2O5 as novel NOx storage and reduction (NSR) catalyst", Science of Advanced Materials, 5 (2013) 1743-1749. doi/abs/10.1021/jp909026p

[14] Sushil Kumar Kansal, Randeep Lamba, S. K. Mehta, Ahmad Umar*, "Photocatalytic Degradation of Alizarin Red S Using Simply Synthesized ZnO Nanoparticles", Materials Letters, 106 (2013) 385-389. doi.org/10.1016/j.matlet.2013.05.074

[15] Xiuwen Cheng, Guoping Pan, Xiujuan Yu*, Tong Zheng, Ahmad Umar, Qiang Wang, "Effect of Post-annealing Treatment on Photocatalytic and Photoelectrocatalytic Performances of TiO2 Nanotube Arrays Photoelectrode",Journal of Nanoscience and Nanotechnology, 13 (2013) 5580-5585. doi.org/10.1166/jnn.2013.7557

[16] S. Chauhan, Kundan Sharma, M. S. Chauhan and Ahmad Umar, "Density, sound velocity, viscosity, surface tension and spectroscopic studies of sodium dodecylbenzenesulfonate (SDBS) in aqueous solution of histidine", Advanced Science, Engineering and Medicine, 5 (2013) 720-725; DOI: 10.1166/asem.2013.1291

[17] Qiang Wang, Jingfang Yu, Jingjing Liu, Zhanhu Guo, Ahmad Umar, Luyi Sun, "Na+ and K+-exchanged zirconium phosphate (ZrP) as high-temperature CO2 adsorbents", Science of Advanced Materials, 5 (2013) 469-474. DOI: 10.1166/sam.2013.1529

[18] Hyo-Joong Kim, Ji-Wook Yoo, Kwon-Il Choi, Ho Won Jang, Ahmad Umar* and Jong-Heun Lee, "Ultra-selective and sensitive detection of xylene and toluene for monitoring indoor air pollution using Cr-doped NiO hierarchical nanostructures", Nanoscale, 5 (2013) 7066-7073. DOI:10.1039/C3NR01281F

[19] Sadia Ameen, M. Shaheer Akhtar, Ahmad Umar, Hyung Shik Shin*, "Effective modified electrode of poly (1-naphthylamine) nanoglobules for ultra-high sensitive ethanol chemical sensor", Chemical Engineering Journal, 229 (2013) 267-275 doi.org/10.1016/j.cej.2013.05.112

[20] S. Al-Heniti, Ahmad Umar*, R. I. Badran, H. M. Zaki, A. Al-Hajry, "n-ZnO Based Nanostructure/p-Silicon Substrate Based Efficient p-n Heterojunction Diode", Science of Advanced Materials, 5 (2013) 301-307. DOI: 10.1166/sam.2013.1526

[21] Ahmad Umar*, M. S. Akhtar, G.N.Dar, M. Abaker, A. Al-Hajry, S. Baskoutas, "Visible-light-driven photocatalytic and Chemical Sensing Properties of SnS2 nano-flakes", Talanta, 114 (2013) 183-190; doi.org/10.1016/j.talanta.2013.03.050

[22] Sushil Kumar Kansal, Mani, H. Kumar, Ahmad Umar*, Wenli Deng, "Facile growth and characterization of TiO2 Nanoparticles for Photocatalytic Degradation of 2, 3-Dichlorophenol: Experimental Optimization and Comparison with Commercial TiO2", Journal of Nanoscience and Nanotechnology, 13 (2013) 4172-4177. doi.org/10.1166/jnn.2013.7218

[23] Guang Mu, Lei Wang, Jie Yin, Baojiang Jiang, Liming Jiang, Ahmad Umar*, Honggang Fu, "Synergetic effect of WC/ porous graphite carbon supports on electrocatalytic reactivity of Pt for methanol electrooxidation", Science of Advanced Materials, 5 (2013) 1709-1717. doi.org/10.1166/sam.2013.1616

[24] S. K. Mehta, Khushboo Salaria, Ahmad Umar, "Highly sensitive luminescent sensor for cyanide ion detection in aqueous solution based on PEG-coated ZnS nanoparticles", Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 105 (2013) 516-521. doi.org/10.1016/j.saa.2012.12.068

[25] Qiang Wang, Zhang Zhang, Yanshan Gao, Linhai Duan, Ahmad Umar, Zhanhu Guo, Dermot O'Hare, "Synthesis and characterization of high surface area flower-like Ca-containing layered double hydroxides Mg3-xCaxAl1-NO3", Science of Advanced Materials, 5 (2013) 411-420. DOI: 10.1166/sam.2013.1527

[26] D. Kaushal, D. S. Rana, M. S. Chauhan, Ahmad Umar, S. Chauhan, "The effect of sodium dodecyl sulphate on Furosemide: A cardiovascular drug in water-methanol at different temperatures" Journal of Molecular Liquids, 188 (2013) 237-244; doi.org/10.1016/j.molliq.2013.09.030

[27] Ganga Ram Chaudhary*, Priya Saharan, Arun Kumar, S. K. Mehta, Suman Mor and Ahmad Umar, "Adsorption Studies of Cationic, Anionic and Azo-Dyes via Monodispersed Fe3O4 nanoparticles", Journal of Nanoscience and Nanotechnology, 13 (2013) 3240-3245. DOI: 10.1166/jnn.2013.7152

[28] R. Wahab, N. K. Kaushik, N. Kaushik, Eun Ha Choi, Ahmad Umar, Sourabh Dwivedi, Javed Musarrat, Abdulaziz A. Al-Khedhairy, "ZnO Nanoparticles Induces Cell Death in Malignant Human T98G Gliomas, KB and non-malignant HEK Cancer Cells", Journal of Biomedical Nanotechnology, 9 (2013) 1181-1189. DOI: 10.1166/jbn.2013.1652

[29] H. M. Zaki, S. Al-Heniti*, Ahmad Umar, F. Al-Marzouki, A. Abdel-Daiem, T. A. Elmosalami, H.A. Dawoud, F. S. Al-Hazmi, S.S. Ata-Allah, "Magnesium-zinc ferrite nanoparticles: Effect of copper doping on the structural, electrical and magnetic properties", Journal of Nanoscience and Nanotechnology, 13 (2013) 4056-4065. doi.org/10.1166/jnn.2013.7434

[30] R. Wahab, S. Dwivedi, Ahmad Umar, S. Singh, I. H. Hwang, H. S. Shin, J. Musarrat, A. A. Al-Khedhairy, and Y. S. Kim, "ZnO Nanoparticles Induce Oxidative Stress in Cloudman S91 Melanoma Cancer Cells", Journal of Biomedical Nanotechnology, 9 (2013) 441-449. DOI: 10.1166/jbn.2013.1593 

[31] S. H. Kim, G. N. Dar and Ahmad Umar*, "Growth of In-Doped ZnO Hollow Spheres Composed of Nanosheets Networks and Nanocones: Structural and Optical Properties", Journal of Nanoscience and Nanotechnology, 13 (2013) 4639-4644. DOI: 10.1166/jnn.2013.7745

[32] Saleh Al-Heniti and Ahmad Umar, "Structural, Optical and Field Emission Properties of Urchin-Shaped ZnO Nanostructures", Journal of Nanoscience and Nanotechnology, 13 (2013) 86-90. DOI: 10.1166/jnn.2013.7099 

[33] Rajesh Kumar, Girish Kumar, Ahmad Umar*, "ZnO Nano-Mushrooms for Photocatalytic Degradation of Methyl Orange", Materials Letters, 97 (2013) 100-103. doi.org/10.1016/j.matlet.2013.01.044

[34] S. Chauhan, Kuldeep Kumar, M.S. Chauhan, D.S. Rana, and Ahmad Umar, "Acoustical and Volumetric Studies of Proline in Ethanolic Solutions of Lecithin at Different Temperatures", Advanced Science, Engineering and Medicine, 5 (2013) 991-997. doi.org/10.1166/asem.2013.1362

[35] Rosilda Selvin, L. Selva Roselin, Suzan A. Khayyat and Ahmad Umar, "Hierarchical Zeolite Beta: An Efficient and Eco-Friendly Nanocatalyst for the Friedel-Crafts Acylation of Toluene", Journal of Nanoscience and Nanotechnology, 13 (2013) 4415-4420. DOI: 10.1166/jnn.2013.7153

[36] G. R. Chaudhary, Priya Saharan, S.K. Mehta, Suman Mor, Ahmad Umar, "Fast and efficient removal of hazardous Congo Red from its aqueous solution using ?-Fe2O3 Nanoparticles", Journal of Nanoengineering and Nanomanufacturing, 3 (2013) 142-146. doi.org/10.1166/jnan.2013.1120

[37] Gulam Hussain, Kanchan Kohli, Ahmad Umar, and Saima Amin, "Nanovesicular delivery of repaglinide through skin", Science of Advanced Materials, 5 (2013) 810–821 doi.org/10.1166/sam.2013.1522

[38] S. Chauhan, M. S. Chauhan, P. Sharma, D. S. Rana, Ahmad Umar, "Physico-chemical studies of oppositely charged protein-surfactant system in aqueous solutions: sodium dodecyl sulfate (SDS)-lysozyme", Fluid Phase Equilibria, 337 (2013) 39-46. doi.org/10.1016/j.fluid.2012.09.003

[39] S. Chauhan, K. Sharma, D. S. Rana, G. Kumar, Ahmad Umar*, "Volumetric and conductance studies of cetyltrimethyl ammonium bromide in aqueous glycine", Journal of Solution Chemistry, 42 (2013) 634-656.DOI: 10.1007/s10953-013-9981-1

[40] Panpan Sui, Xiuhong Meng, Yuye Wu, Yuanyuan Zhao, Lijuan Song, Zhaolin Sun, Linhai Duan, Ahmad Umar, and Qiang Wang, "Adsorption and Diffusion of Benzene and Thiophene Over Y/MCM-41 Composite Zeolite", Science of Advanced Materials, 5 (2013) 1132-1138. doi.org/10.1166/sam.2013.1564

[41] Zhongpeng Wang, Xiaomin Zhang, Liguo Wang, Zhaoliang Zhang, Zheng Jiang, Tiancun Xiao, Ahmad Umar, Qiang Wang, "Co-Mn-Al non-stoichiometric spinel-type catalysts derived from hydrotalcites for the simultaneous removal of soot and nitrogen oxides", Science of Advanced Materials, 5 (2013) 1449-1457. DOI: 10.1166/sam.2013.1606

[42] Honggang Fu, Jinghong Li, and Ahmad Umar, "Editorial: A Special Section on Functional Nanomaterials for Energy Applications", Science of Advanced Materials, 5 (2013) 1581-1584. [Special issue-Editorial] doi.org/10.1166/sam.2013.1686

[43] Yanshan Gao, Zhang Zhang, Jingwen Wu, Linhai Duan, Ahmad Umar, Luyi Sun, Zhanhu Guo, Qiang Wang, "A Critical Review on the Heterogeneous Catalytic Oxidation of Elemental Mercury in Flue Gases", Environment Science and Technology, 47 (2013) 10813-10823. DOI: 10.1021/es402495h

[44] Wei Wei, Zonghua Wang, Zhuang Liu, Yang Liu, Liang He, Dezhi Chen, Ahmad Umar, Lin Guo and Jinghong Li, "Metal oxide hollow nanostructures: fabrication and Li storage performance", Journal of Power Source, 238 (2013) 376-387. [Invited article] DOI: 10.1016/j.jpowsour.2013.03.173

[45] Sandeep Kumar, Neeraj Dilbaghi, Ruma Rani, Gaurav Bhanjana, Ahmad Umar, "Novel approaches for enhancement of drug bioavailability", Reviews in Advanced Sciences and Engineering, 2 (2013) 133-154. [Invited article] DOI: 10.1166/rase.2013.1038