The Ohio State University / Columbus, OH / 2010-2015 (expected)

Bachelor of Science in Design, Industrial Design / GPA: 3.7

Northwestern University / Evanston, IL / 2002-2005

Bachelor of Art, Biology (Physiology)

Feinberg School of Medicine / Chicago, IL / 2005-2006, 2008-2009

Doctor of Medicine, unfinished

Education

AT&T Student Scholarship

Lucent Student Scholarship

OSU Design Showcase Spring 2011/2013

Dean’s List 2011-2013

InNUvation Semifinalist 2009

HonorsLearning about other aspects of design such as human factors, info design, and design history.

Playing music (violin for 14+ years, guitar for 2+ years, cajon in the future).

Tinkering with hi-fi audio equipment (current setup: FLAC > foobar > ODAC > O2 Amp >

Sennheiser HD600). Right now I am trying to build a tube headphone amp.

Riding my bicycle to commute to school and experimenting with components.

Interests

Skills

Digital

Adobe Photoshop

Adobe Illustrator

Adobe InDesign

Keyshot

Maya

Microsoft Office

Photoview 360

Sketchbook Pro

Solidworks (Rhino equiv)

Analog

sketching

rendering

design research

thumbnailing

storyboarding

ideation

prototyping

branding

styling

photography

Experience

Kimberly-Clark Healthcare + Professional / Roswell, GA / Jan-April 2014

ID Intern. Currently working on different points in the design process of multiple projects within both

the Kimberly-Clark Healthcare and Professional product lines.

Michael Graves Design Group / Princeton, NJ / May-Dec 2013

ID Intern. Contributed to the design process for several clients on projects ranging from consumer

healthcare products for the elderly, kitchenware, and home goods. Took part in research, ideation,

sketching, prototyping, and 3D modeling.

Chemical Abstract Services / Columbus, OH / Aug 2011-May 2013

Student Staff Analyst. Working part-time, 10-20 hours a week, analyzing research abstracts that go

into one of the largest databases of biochemical research papers in the world.

Center for Automotive Research / Columbus, OH / June-Aug 2011

ID Intern. Assisted in the fabrication of a working prototype for a novel concept that was eventually

patented (NDA). Most of the work involved machining metal and forming plastics.

Hello.I am an industrial designer interested in creating unique products and experiences that enable people to do what they want, think, and wish they could do, but better.

leearng.chang@gmail.com www.coroflot.com/leearng

ContentSalt+Pepper SetFaucet KangaPen SanderWireless MouseInfographicsSketches

01020304050607

Salt+Pepper SetUsing a set of opposing words, create a salt and pepper shaker.

013 weeks

6.75”

4.875”

0.25”0.0625“ 0.125”

0.0625”

0.25”0.5”

1.125”

0.875”

1.3125”

4”

2.75” 1.875”

1.5”

3.25”

1.5625”

Sketching led to the word pair of mother and child with penguins as the inspiration for form.

A technical drawing was done using Adobe Illustrator to show the inner components including the grinder and stoppers

Foam prototypes allow for quick exploration of concepts and forms. Ideas like a intersecting/interacting forms and weighted base/bobbing shakers were tested.

Proper sizing and comfortable usage are important considerations.

The playful moment between the salt and pepper shakers fits well with the warmth of the kitchen. In the future, I would like to experiment with other colors, materials, and finishes to target a wider range of users.

FaucetDesign a modern faucet utilizing a variety of shapes, surfaces, and materials using Solidworks and Keyshot.

022 weeks

Modern and clean as well as ideas from Japanese bamboo water gardens contributed to the form.

Two interesting ideas were to have a separate spout at the end of the faucet head that would be specifically for rinsing out your mouth after brushing your teeth and a toothbrush holder built into the faucet.

Rubber gripped hot and cold knobs are pointed towards the user for easier access.

A playful rubber ball controls the sink stopper and is located in the typical position.

Sweeping lines and a piercing profile were inspired by the bamboo spouts that are a part of the Zen gardens in Japan.

Rubber lined toothbrush holder integrated into faucet.

Based on my sketches, I used Solidworks and Keyshot to render

this modern and sleek looking faucet with matching black marble

countertop and porcelain sink. Several changes to the colors and

materials, as well as small details, were made for the final design.

Kanga Design a way for the elderly to get groceries more easily.

038 weeks

Problem Statement

Getting groceries from the store back home presents unique challenges

for seniors living in urban areas due to health limitations and the various

environments and obstacles they face traveling from home, to the

grocery store, and back.

In particular, the lack of a convenient way to open and close/fold portable

shopping carts can lead to back pain and injury.

The new portable shopping cart must be able to easily fold into a

compact/flat form as well as improve accessibility, maneuverability,

and safety,

Interviews + Observations

Dorothy is an 85 year old woman who lives with her daughter and son-in-law, but drives her own car and buys groceries on her own.

Dorothy must bend close to 90 degrees while using her other hand for support, in order to flip up the bottom panel and close the cart properly. This particular cart likes to flip open randomly and has no locking mechanism to keep it closed while being pulled/pushed.

Seniors avoid using the self-checkout and almost always allow the bagger to bag their food and arrange them in the cart to avoid crushing things. Being able to fold flat is important for lifting and storage in the trunk.

Once again, stairs pose a serious problem. Ramps and elevators are used whenever possible. Wheel with a diameter under 7 inches are very difficult to get up stairs with a full load.

This 2-wheeled cart is more comfortable pulled although when grocery shopping, Dorothy prefers having the cart in front of her so she can see the food she has bought.

BrainstormingWith the broad guidelines of accessibility, maneuverability, and safety, along with the

primary objective of a more easily accessible and intuitive folding mechanism, ideas were

generated. No matter how silly the idea seemed, it was put on paper and posted up.

Accessibility Maneuverability + Safety

IdeationThe quick post-it ideas from the brainstorming session served as a guide for

further ideation. Rough concepts were developed for various aspects of the cart.

SketchesSeveral more fleshed out ideas and forms were sketched with a perspective and two orthographic

views, as well as several callouts to label features. I still did not feel like I had a clear direction but

chose to prototype some ideas to get a physical sense of how to move forward.

Further prototyping continued as I still was not comfortable with any of my ideas. The

breakthrough came while I played around with different PVC pipe orientations and saw an

opportunity to bring the open/close mechanism closer to the user. Through Solidworks I was

able to change lengths and angles to confirm that certain geometries worked.

Prototyping

The fourth prototype looks similar to the first but there are angled side tubes that are attached at a pivot point to the bottom rack and vertical tube. So by moving both sides up, the bottom rack can fold up while the angled tubes become parallel to the vertical tubes.

A good idea came to me to simplify the mechanism by putting a central bar across that would be attached to the sliding joints. It would have a spring loaded button so that the user could bend down slightly and grip/press the button releasing locking pins. Then, by pulling up, the cart would be able to close and pins at the top would lock it in the closed position. What required two hands now only requires one

Experimentation was also done with wheel sizes and the typical small plastic wheel was compared against larger rubber wheels. The larger wheels were significantly better for getting up stairs. A swivel front wheel was later tested briefly to address concerns with 2-fixed-wheeled carts.

Final Concept

SolidworksAn initial framework was set up to make sure the physics worked for the opening/closing mechanism. Several wheel designs were mocked up for both the front and rear wheels. After the tubed frame was set, the plastic joint components were added as well as the handle and bag. Colors and materials came last.

nylon injected plastic molded joints: strong, durable, resistant to abrasions

18”

34” 25”

65”

Cordura nylon bag: durable and resistant to abrasions and tears

Body measurements were based on the average height of men and women between the ages of 60-69 years old, 5’5” or 65” tall. The older, the shorter the average height.

natural rubber tires: excellent flex, tear and abrasion resistance

natural rubber grip: excellent flex, tear and abrasion resistance

Kangaportable shopping cart

aluminum round tubing: good strength to weight ratio, natural protective layer, bright and glossy finish

A front swivel wheel increases maneuverability over fixed 4-wheeled carts and stability over 2-wheeled carts. 8 inch oversized rear wheels make

it easy to go up stairs and curbs which can be 7 inches tall.

A rubber grip lined bottom rack keeps the bag and its contents in place and can be used as a traditional hand cart.

Side and front reflectors increase visibility to cars and bikes.

Close access to the open/close button minimizes risks of overextension and back injury while locking things in place. Only one hand is needed to operate.

Adjustable, padded handlebars allow multiple positions for both pushing and pulling, and with tilt of frame, help avoid the cart clipping the feet.

The bag is made from Cordura, making it durable, resistance to abrasions and tears, and waterproof.

A back pouch provides convenient access to small items similar to a regular shopping carts’ front space.

Kangaportable shopping cart

Kanga is a portable shopping cart designed for seniors on the go who are looking for a convenient way to carry their groceries. Whether it be on a sidewalk, in a bus, or at the grocery store, Kanga maneuvers past obstacles with ease. And with a simple push of a button, folding the cart flat is easy and painless.

19

Pen SanderCreate a Ryobi pen sander that addresses ergonomic and usability concerns.

046 weeks

WHAT ARE PEN SANDERS?Pen sanders are a type of detail sander that is hand-held

and electricity-powered, and is able to remove fine bits of

material in small and hard to reach areas using an assortment of

interchangeable tips.

PROXXON?Proxxon is the market leader in this niche market

and focuses on small power tools for hobbyists

and model makers.

WHAT ARE PEN SANDERS?Pen sanders are a type of detail sander that is hand-held and

electricity-powered, and is able to remove fine bits of material in small

and hard to reach areas using an assortment of interchangeable tips.

WHO USE PEN SANDERS?Pen sanders are used by hobbyists and model makers who deal

with materials such as wood, metal, plastic, and clay and need to

take away small amounts of material.

WHERE ARE THEY FOUND?Although small enough to be portable, they are commonly found

on workshop desks with flat surfaces used for intricate and

detailed work as well as small spot jobs.

HOW ARE THEY USEFUL?Pen sanders are extremely useful for smoothing out tiny details on

small models. Traditional detail sanders cover too large and area

and cannot fit in small spaces and corners while hand sanding

faces similar challenges and can create uneven surfaces.

model makers

desks (sitting) workbench

(standing)

small models

+ tiny details

tight corners

+ spaces

hobbyist

HUMAN INTERFACES1) indentations for thumb and index finger

2) on/off switch on end of pen sander

3) on/off switch on power transformer (redudant)

4) twist feature to exchange and lock tips

5) circular body that can be rolled on fingers and in the hand

6) speed dial on the power transformer (NOT on the pen)

7) vents on the pen body/motor areas for cooling

8) circular coiled power cord that is stretchy

9) hole slots to hold tips

10) holder on power transformer

OTHER• Proxxon has very little color coding (everything is green with

some black parts and yellow highlights)

• the pen sander is not particularly ergonomic and is essentially

a cylinder

• everything is made of plastic and you must use a screwdriver

to take a look at the innards of the pen sander (makes it more

difficult to diagnose/fix problems)

1

4 5 6

7 8 9

10

2 3

on/off trigger

weighted cuff + shaft

plastic spindle

motor

MOTOR REVERSE ENGINEERINGIn order to better understand how the pen sander works, I opened

it up to take a peek into the innards. The mechanism was a lot

simpler than I thought it would be.

BRAINSTORMINGThis phase involved trying out different concepts via thumbnails. It is here where I looked into a battery adapter for the ONE+ battery on the

waist in the form of a belt and on the arm like an mp3 armband. Grips were explored as well as putting on a mouse scrollwheel like feature

to control the speed. A more curved form based on an airsprayer was developed. Special emphasis was placed on enabling 2 grips, a pen

grip and an overhand grip.

STUDY MODELA study model was created to test the general forms and feels and were partially based on the motor configurations before. The

key part of this step was to test for feel and ergonomics based on the 2 hand positions I described previously. I wanted to give

more support to both the pen grip and the overhand grip so adding more palm support to the pen grip and more pinching like

support for the overhand grip.

ONE+ PEN SANDER

The tip can be rotated (360 degrees) to a fixed position to avoid having to rotate your wrist in awkward positions.

The battery and battery adapter allow for the user to be mobile around his or her workspace and can be attached to an armband or belt.

A silicon o-ring gives users greater flexibility in transitioning from a pen position to overhand position. It also serves as a pinching point for the overhand grip and a way to hang up the tool when not in use.

Many users complain about power tools breaking down and not working. Giving easy access to the innards through a screwless method enpowers users to figure out how to fix their tool instead throwing it away.

A scrollwheel on the top serves as an on/off switch and is readily accessible on the pen instead of on the battery adapter.

Holes on the battery adapter are magnatized with the tips to allow to quick and easy access to different types of tips.

Instead of coming out the back, the wire connecting the pen sander to the battery adapter exits from the bottom, any jitters from the wire are reduced as the wire is closer to your hand and center of balance.

Extra sandpaper adhesives can also be stored in the battery adapter storage compartment and torn off quickly to replace worn out sandpaper adhesives.

screwless access to motor (slide out)

speed control scrollwheel + on/off button

interchangable tips

tip adjustment/rotation

silicon grip areas offer comfort and control

vents keep the motor from overheating

o-ring allows for flexible hand positions and place to hang tool

plastic (accents)

plastic (body)

silicon (grips)

cord exit position to battery adapter (on armband or belt) centralizes balance

The Ryobi ONE+ Pen Sander is a concept power tool that gives hobbyists and model makers more flexibility in terms of comfort, control, and precision.

pen_sander_presentation_12.indd 1 4/25/2013 7:28:36 AM

ONE+ PEN SANDER

The tip can be rotated (360 degrees) to a fixed position to avoid having to rotate your wrist in awkward positions.

The battery and battery adapter allow for the user to be mobile around his or her workspace and can be attached to an armband or belt.

A silicon o-ring gives users greater flexibility in transitioning from a pen position to overhand position. It also serves as a pinching point for the overhand grip and a way to hang up the tool when not in use.

Many users complain about power tools breaking down and not working. Giving easy access to the innards through a screwless method enpowers users to figure out how to fix their tool instead throwing it away.

A scrollwheel on the top serves as an on/off switch and is readily accessible on the pen instead of on the battery adapter.

Holes on the battery adapter are magnatized with the tips to allow to quick and easy access to different types of tips.

Instead of coming out the back, the wire connecting the pen sander to the battery adapter exits from the bottom, any jitters from the wire are reduced as the wire is closer to your hand and center of balance.

Extra sandpaper adhesives can also be stored in the battery adapter storage compartment and torn off quickly to replace worn out sandpaper adhesives.

screwless access to motor (slide out)

speed control scrollwheel + on/off button

interchangable tips

tip adjustment/rotation

silicon grip areas offer comfort and control

vents keep the motor from overheating

o-ring allows for flexible hand positions and place to hang tool

plastic (accents)

plastic (body)

silicon (grips)

cord exit position to battery adapter (on armband or belt) centralizes balance

The Ryobi ONE+ Pen Sander is a concept power tool that gives hobbyists and model makers more flexibility in terms of comfort, control, and precision.

pen_sander_presentation_12.indd 1 4/25/2013 7:28:36 AM

ONE+ PEN SANDER

The tip can be rotated (360 degrees) to a fixed position to avoid having to rotate your wrist in awkward positions.

The battery and battery adapter allow for the user to be mobile around his or her workspace and can be attached to an armband or belt.

A silicon o-ring gives users greater flexibility in transitioning from a pen position to overhand position. It also serves as a pinching point for the overhand grip and a way to hang up the tool when not in use.

Many users complain about power tools breaking down and not working. Giving easy access to the innards through a screwless method enpowers users to figure out how to fix their tool instead throwing it away.

A scrollwheel on the top serves as an on/off switch and is readily accessible on the pen instead of on the battery adapter.

Holes on the battery adapter are magnatized with the tips to allow to quick and easy access to different types of tips.

Instead of coming out the back, the wire connecting the pen sander to the battery adapter exits from the bottom, any jitters from the wire are reduced as the wire is closer to your hand and center of balance.

Extra sandpaper adhesives can also be stored in the battery adapter storage compartment and torn off quickly to replace worn out sandpaper adhesives.

screwless access to motor (slide out)

speed control scrollwheel + on/off button

interchangable tips

tip adjustment/rotation

silicon grip areas offer comfort and control

vents keep the motor from overheating

o-ring allows for flexible hand positions and place to hang tool

plastic (accents)

plastic (body)

silicon (grips)

cord exit position to battery adapter (on armband or belt) centralizes balance

The Ryobi ONE+ Pen Sander is a concept power tool that gives hobbyists and model makers more flexibility in terms of comfort, control, and precision.

pen_sander_presentation_12.indd 1 4/25/2013 7:28:36 AM

ONE+ PEN SANDER

The tip can be rotated (360 degrees) to a fixed position to avoid having to rotate your wrist in awkward positions.

The battery and battery adapter allow for the user to be mobile around his or her workspace and can be attached to an armband or belt.

A silicon o-ring gives users greater flexibility in transitioning from a pen position to overhand position. It also serves as a pinching point for the overhand grip and a way to hang up the tool when not in use.

Many users complain about power tools breaking down and not working. Giving easy access to the innards through a screwless method enpowers users to figure out how to fix their tool instead throwing it away.

A scrollwheel on the top serves as an on/off switch and is readily accessible on the pen instead of on the battery adapter.

Holes on the battery adapter are magnatized with the tips to allow to quick and easy access to different types of tips.

Instead of coming out the back, the wire connecting the pen sander to the battery adapter exits from the bottom, any jitters from the wire are reduced as the wire is closer to your hand and center of balance.

Extra sandpaper adhesives can also be stored in the battery adapter storage compartment and torn off quickly to replace worn out sandpaper adhesives.

screwless access to motor (slide out)

speed control scrollwheel + on/off button

interchangable tips

tip adjustment/rotation

silicon grip areas offer comfort and control

vents keep the motor from overheating

o-ring allows for flexible hand positions and place to hang tool

plastic (accents)

plastic (body)

silicon (grips)

cord exit position to battery adapter (on armband or belt) centralizes balance

The Ryobi ONE+ Pen Sander is a concept power tool that gives hobbyists and model makers more flexibility in terms of comfort, control, and precision.

pen_sander_presentation_12.indd 1 4/25/2013 7:28:36 AM

Feature Details

RENDERINGSThe renderings were done in Solidworks and show several different perspectives. With more time

some of the wrinkles in the otherwise smooth surfaced model would have been ironed out and

perhaps some more complex vanishing lines would have been included. Keyshot was also used

to add better materials to the model.

Wireless MouseTake any existing object and using surface modeling, recreate it using Solidworks.

054 weeks

Logitech Wireless Anywhere MX Mouse This Solidworks exercise demonstrates the application of complex curves and surfaces as well as vanishing break lines.

InfographicsDesign infographics posters based on both researched and gathered data.

064 weeks

Columbus Weather

Weather metrics such as high, low, and average temperatures, snowfall,

rainfall, etc. were graphed and arranged to reveal interesting trends.

History of iPods

This infographic shows the history of the iPod family by comparing the change in price,

battery life, and storage space in relation to Apple’s stock value and the number of songs

sold through iTunes.

SketchesVarious sketches from different projects or just for fun.

07∞

07∞