Andreucci VE

Caglioti A

Conte G

Dal Canton A

De Nicola L

Romano G

Uccello F

Veniero P

University of Malaya, Institute of Research Management & Monitoring

Commonrepo UM

Volume 2 / 2013
MILESTONE@UM
Newsletter 
Organic Light Emitting Diode (PI2013700871)
Since the discovery of organic light emitting device (OLED) by Tang and Van Slyke,  OLED 
holds great   potential for flat panel display and solid state lightings. It is mercury free and 
its emission is diffused  and most interestingly it can be printed like a newspaper. The team 
at University Malaya uses organic semiconductor materials as an emissive layer. Such layer 
is usually less than 100nm. There are two approaches to fabrication. One approach is to use 
vacuum deposition of organic materials and the other is by using solution processing. 
Vacuum deposition of organic material involves very high cost. Our research in the University 
of Malaya focuses on solution processability. This means that it can be printed like a sheet of 
paper on a flexible substrate at a low temperature. This process also incurs a very low 
manufacturing cost. Coupled with a frontier understanding of material physics, organic 
chemistry and innovative optimization of materials, layers, processes and cathode, solution 
processed OLED can be highly efficient. In the patent, we used the solution processable 
multilayer organic light emitting diode. This was achieved by combining the orthogonal 
solvents and crosslinkable interlayer to form multilayer OLED that enables efficient charge 
and high triplet confinement.  Such a device could potentially replace the existing application 
of LED. Solution processed OLED is the next generation green technology which can be used 
in transparent displays, signages and eventually general lighting of large area.  It is ultra 
thin,  biodegradable, can be fabricated at low cost and delivers high performance without the 
need of  heat-sinking. The OLED also offers a more environmentally friendly approach to the 
use light. Currently, we are engaging with the Malaysian LED industry to bring this 
technology to the pre-commercialization stage and eventually to be used in  signages and in  
general lighting.
Figure 1 :  A comparison of brightness and power 
efficiency between the OLED and the common LED
Centre of Research Services, Institute of Research Management & Monitoring | Level 2, Research Management & Innovation Complex, University of Malaya, 50603 Kuala Lumpur, MALAYSIA.  
Tel: (603) 7967 4651/6942  Fax: (603) 7967 6290  Email : pengarah_ppp_ippp@um.edu.my
Inventors:
Dr. Woon Kai Lin
Department of Physics, 
Faculty of Science, 
University of Malaya, 50603 Kuala Lumpur, 
MALAYSIA
Tel. No. (Office): 03-79674239
Fax No.:03-79674146
E-mail Address: ph7klw76@um.edu.my
Figure 3 :  Emitting superior brightness 
during the demonstration
Figure 2 :  The OLED uses an organic 
semiconductor material as an 
emissive layer
Figure 4 :  OLED illuminates a dark 
surrounding.
Brightness (cd/m2)
P
o
w
e
r 
e
!
c
ie
n
c
y
 (
lm
/W
)
0 1000 2000 3000 4000 5000 6000 7000
Device I
Device II
8000
4
8
12
16
20
24
1
The invention can be described as a portable general-purpose bio-impedance analyzer for 
medical diagnosis. Bio-impedance represents the response of a living body tissue to an 
externally applied electric current and consists of resistance and reactance components. In 
biological tissues, resistance arises from extra and intra-cellular fluids whereas capacitive 
reactance arises from cellular membranes. The measurement of bio-impedance is 
conducted by passing a sub micro-ampere sine wave current signal through human body 
and the output of the measurement displays bio-impedance parameters, namely, 
resistance, reactance and phase angle. 
 Bio-impedance analysis offers a noninvasive and real-time method to monitor 
human body tissues and hence is useful in various clinical applications. The usability of 
bio-impedance analysis has been demonstrated in multitude of clinical applications ranging 
from tumor monitoring, detection of tissue ischemia, non-invasive continuous blood glucose 
monitoring, and diagnosis and monitoring of lymphedema to assessment of human body 
composition. However, its clinical potential is curbed by the lack of cost-effective portable 
and wearable general-purpose bio-impedance analyzer in the market. 
Our current bio-impedance analyzer diagnostic tool, shown in Figure 1, is a general-purpose 
device that is able to provide bio-impedance analysis. This analyzer is portable, rapid, 
low-cost, locally made and can be easily customized for specific disease monitoring.   Hence, 
this invention opens a new avenue for the widespread clinical applications of bio-impedance 
analysis. Our team, for example, is currently developing a wearable non-invasive 
bio-impedance monitoring device for classifying risk in dengue patients. This new device will 
provide human body composition information namely water compartments and mass 
distribution, and will incorporate Artificial Intelligence algorithms for clinical decision 
support system. In this future prototype, the data will be transferred wirelessly via 
Bluetooth. Computerized data analysis could then be performed remotely in clinician's 
mobile application for a particular disease, as envisioned in Figure 2.
Figure 3 :   A non invasive bioimpedance 
analysis.
Figure 1 :  Performing an analysis via the 
clinicians mobile applications.
Inventors:
Profesor Ir. Dr. Fatimah Binti Ibrahim
 Aung Thiha
 Department of Biomedical Engineering,
 Faculty of Engineering Building, 
University of Malaya,
 50603 Kuala Lumpur, MALAYSIA
Tel. No. (Office): 603-79676818
Fax No.: 603-79674579/603-79676878
E-mail Address: fatimah@um.edu.my
Figure 2 : The Bioimpedance Analyzer, which 
has been recently granted its patent.
Volume 2 / 2013
Centre of Research Services, Institute of Research Management & Monitoring | Level 2, Research Management & Innovation Complex, University of Malaya, 50603 Kuala Lumpur, MALAYSIA.  
Tel: (603) 7967 4651/6942  Fax: (603) 7967 6290  Email : pengarah_ppp_ippp@um.edu.my
Bio-Impedance Analyzer Diagnostic Tool 
(PI 2013 700936)
MILESTONE@UM
Newsletter 
2


Milestone@UM, Volume 2, 2013

DAL CANTON, ANTONIO

Archivio Istituzionale della Ricerca - Università degli Studi di Pavia

Role of atrial natriuretic factor in renal adaptation to variation of salt intake in humans

CONTE, Giuseppe

DE NICOLA, Luca

Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli"

Role of atrial natriuretic factor in renal adaptation to
variation of salt intake in humans

http://commonrepo.um.edu.my/12054/1/milestone-vol-2-2013.pdf

Milestone@UM, Volume 2, 2013

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Archivio Istituzionale della Ricerca - Università degli Studi della Campania "Luigi Vanvitelli"