User profiles for Jaafar Abdullah

Jaafar Abdullah

Associate Professor, Universiti Putra Malaysia
Verified email at upm.edu.my
Cited by 3865

A simple and sensitive fluorescence based biosensor for the determination of uric acid using H2O2-sensitive quantum dots/dual enzymes

NE Azmi, NI Ramli, J Abdullah, MAA Hamid… - Biosensors and …, 2015 - Elsevier
A novel optical detection system consisting of combination of uricase/HRP–CdS quantum
dots (QDs) for the determination of uric acid in urine sample is described. The QDs was used …

[HTML][HTML] Sensitive detection of dengue virus type 2 E-proteins signals using self-assembled monolayers/reduced graphene oxide-PAMAM dendrimer thin film-SPR …

NAS Omar, YW Fen, J Abdullah, Y Mustapha Kamil… - Scientific reports, 2020 - nature.com
In this work, sensitive detection of dengue virus type 2 E-proteins (DENV-2 E-proteins) was
performed in the range of 0.08 pM to 0.5 pM. The successful DENV detection at very low …

Immobilization of tyrosinase in chitosan film for an optical detection of phenol

J Abdullah, M Ahmad, N Karuppiah, LY Heng… - Sensors and Actuators B …, 2006 - Elsevier
An optical biosensor based on the immobilized tyrosinase enzyme in a chitosan film is
described for the detection of phenol. The film was prepared by depositing a chitosan solution …

Folic acid targeted Mn: ZnS quantum dots for theranostic applications of cancer cell imaging and therapy

…, F Mohammad, NA Yusof, J Abdullah… - International Journal …, 2016 - Taylor & Francis
In this study, we synthesized a multifunctional nanoparticulate system with specific targeting,
imaging, and drug delivering functionalities by following a three-step protocol that operates …

[HTML][HTML] Quantitative and selective surface plasmon resonance response based on a reduced graphene oxide–polyamidoamine nanocomposite for detection of …

NAS Omar, YW Fen, J Abdullah, AR Sadrolhosseini… - Nanomaterials, 2020 - mdpi.com
Dengue viral infection is one of the most common deadliest diseases and has become a
recurrent issue for public health in tropical countries. Although the spectrum of clinical diagnosis …

PNA biosensor based on reduced graphene oxide/water soluble quantum dots for the detection of Mycobacterium tuberculosis

MHM Zaid, J Abdullah, NA Yusof, Y Sulaiman… - Sensors and Actuators B …, 2017 - Elsevier
Electrochemical biosensor holds great interest in establishing robust analytical method for
Mycobacterium tuberculosis (M. Tuberculosis). Herein, fabrication of a highly sensitive …

Permeability studies of artificial and natural cancellous bone structures

A Syahrom, MRA Kadir, J Abdullah… - Medical engineering & …, 2013 - Elsevier
In the development of artificial cancellous bones, two major factors need to be considered:
the integrity of the overall structure and its permeability. Whilst there have been many studies …

[HTML][HTML] An optical biosensor based on immobilization of laccase and MBTH in stacked films for the detection of catechol

J Abdullah, M Ahmad, LY Heng, N Karuppiah, H Sidek - Sensors, 2007 - mdpi.com
The fabrication of an optical biosensor by using stacked films where 3-methyl-2-benzothiazolinone
hydrazone (MBTH) was immobilized in a hybrid nafion/sol-gel silicate film and …

Nanocrystalline cellulose decorated quantum dots based tyrosinase biosensor for phenol determination

FA Abd Manan, WW Hong, J Abdullah, NA Yusof… - Materials Science and …, 2019 - Elsevier
Novel biosensor architecture based on nanocrystalline cellulose (NCC)/CdS quantum dots (QDs)
nanocomposite was developed for phenol determination. This nanocomposite was …

[HTML][HTML] Development of an optical sensor based on surface plasmon resonance phenomenon for diagnosis of dengue virus E-protein

NAS Omar, YW Fen, J Abdullah, CENCE Chik… - Sensing and bio …, 2018 - Elsevier
Application of surface plasmon resonance (SPR) optical sensor in the diagnosis of dengue
virus (DENV) emerged over recent years. Immobilized monoclonal antibody (IgM) on gold/Fe-…